title
Introduction to Digital Surveillance Systems

description
Info Level: Beginner Presenter: Eli the Computer Guy Date Created: February 11, 2012 Length of Class: 95 Minutes Tracks Digital Surveillance Prerequisites None Purpose of Class This class introduces students to the basic concepts that are required to install and implement Digital Surveillance Systems. Chapters Introduction (00:00) Types of Systems (06:18) Types of Cameras (39:12) PTZ Cameras (53:32) Networking (01:04:03) Client Expectations (01:10:01) Legal Considerations (01:13:46) Buying Parts (01:16:59) Final Thoughts (01:20:25) Class Notes Introduction Digital Surveillance systems are very easy to learn, but you have to make sure you plan properly. Types of Systems Analog DVR Systems -- Use Siamese Cable to connect cameras. All cameras are directly connected to the system. PC Based Systems are simply PC's with a DVR card installed. DVR Appliances are specially built computers that are cheaper then PC Based systems, but are generally impossible to repair. Video quality will never be better then DVD quality (Which is not actually very good) IP NVR Systems -- Use Ethernet and TCP/IP to Transmit Video These systems support very high resolution cameras FPS -- Frames Per Second -- How smooth the video viewing is 30 FPS = Real Time, 15 FPS = Perceived Real Time, 7 FPS shows Jerky Video FPS can be measured: Real Time Viewing and Recorded Video, It can be per card/ system and/ or per Channel Resolution IP Cameras use standard resolution measurement for any digital camera. Pixels are measured Analog cameras are measured by TVL, Television Lines. 600 TVL is the Best, 320 TVL is the lowest quality. Motion Recording Systems and cameras can be configured so that video is only recorded when there is movement Types of Cameras Bullet -- are self contained and easy to aim. Dome -- are covered with a plexiglas dome so that they cannot be tampered with Vandal Proof Dome -- are hardened so that they can be hit with a bat/ hammer and not be damaged. Box -- Are just the camera unit. You then add an appropriate Lens and Mount Cameras are built to be used inside, or outside. Low Light cameras can see in Low Lux. (Lux is a measurement of light) No Light cameras use Infrared lights to illuminate an area and the camera can see the Infrared light. Wide Dynamic Range Cameras can view in a wide range of lighting conditions Auto-iris lenses automatically open and close the iris based on lighting conditions. PTZ Cameras -- Pan, Tilt, Zoom Not all PTZ Cameras do everything. Some only Pan, Some only Zoom. Eli HATES Analog PTZ Camera Installation PTZ Camera is connected to a Controller on the DVR/ NVR. Generally PTZ Cameras are wired in a loop configuration. PTZ Cameras use protocols to communicate. Pelco D and Pelco P are widely used. PTZ Cameras can have built in intelligence so that they can follow movements, or perform a preprogrammed pattern. Networking WAN Connection for remote viewing should be a minimum of 2Mbps upload speed Mega Pixel Cameras can bog down a LAN. Parallel networks are many times used to separate the Surveillance Network from the Computer Network. Don't use an NVR/DVR for any other service then surveillance. Client Expectations Clients will think their system will do everything they see in Mission Impossible. Make sure to do a good job on Expectations Management Legal Considerations Surveillance systems are regulated by local laws. In Maryland taping Video is easy, but taping audio can run into legal issues. Talk to a lawyer! Buying Parts Network Cameras are built by reputable manufacturers and can be purchased like any other computer equipment. Analog cameras are built by thousands of no name Chinese manufacturers. Be careful to know what you are buying. SuperCircuits.com is a good vendor. Final Thoughts Digital Surveillance is a high profit and relatively easy to do business. It requires a high materials cost Make sure you plan properly, and buy good product. You don't want $6000 of equipment installed and have the project fail. Resources SuperCircuits.com

detail
{'title': 'Introduction to Digital Surveillance Systems', 'heatmap': [{'end': 3515.95, 'start': 3453.301, 'weight': 1}], 'summary': 'Introduces digital surveillance systems, discussing types of systems, cameras, and concepts, emphasizing the potential for $500 to $1,000 profit per camera, legal considerations, setup, frame rates, resolution, camera types, and network infrastructure compatibility.', 'chapters': [{'end': 337.886, 'segs': [{'end': 113.013, 'src': 'embed', 'start': 46.73, 'weight': 1, 'content': [{'end': 52.655, 'text': 'and then we will have more classes that will dive deeper into the different facets of this technology.', 'start': 46.73, 'duration': 5.925}, {'end': 58.939, 'text': "We'll have a class on how to spec out a surveillance system and make sure you're buying all the right parts.", 'start': 53.155, 'duration': 5.784}, {'end': 68.066, 'text': "We'll have a class on how to install an analog surveillance system, and we'll have at least one class on how to install network surveillance systems.", 'start': 59.239, 'duration': 8.827}, {'end': 74.972, 'text': "So this class today is a basic introduction to the concepts that you're going to have to understand.", 'start': 68.366, 'duration': 6.606}, {'end': 83.979, 'text': "One of the things that you're going to have to get through your head and you're going to have to make sure that you understand is when we are talking about digital surveillance systems.", 'start': 75.652, 'duration': 8.327}, {'end': 88.763, 'text': 'we are going to be talking about two, basically two different types of digital surveillance systems.', 'start': 83.979, 'duration': 4.784}, {'end': 95.028, 'text': 'There is the old analog digital surveillance system and there is a new IP based digital surveillance system.', 'start': 89.103, 'duration': 5.925}, {'end': 102.321, 'text': 'A lot of the concepts of these two systems are the same, or at least very, very similar.', 'start': 96.374, 'duration': 5.947}, {'end': 105.545, 'text': 'Some of the concepts are very, very different.', 'start': 102.982, 'duration': 2.563}, {'end': 113.013, 'text': "So I want you to think about this as we're talking about these different types of surveillance systems, cameras, and how it all works.", 'start': 105.685, 'duration': 7.328}], 'summary': "Introduction to surveillance systems: classes on spec'ing, installing analog, and network systems.", 'duration': 66.283, 'max_score': 46.73, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/OY_fz16lPvE/pics/OY_fz16lPvE46730.jpg'}, {'end': 183.291, 'src': 'embed', 'start': 155.181, 'weight': 0, 'content': [{'end': 157.342, 'text': 'you figure out how to install surveillance systems.', 'start': 155.181, 'duration': 2.161}, {'end': 161.063, 'text': 'you can make a lot of money very quickly.', 'start': 157.342, 'duration': 3.721}, {'end': 165.945, 'text': "Digital surveillance systems, you're looking at being able to install for anywhere between $500 to $1, 000 per camera.", 'start': 161.364, 'duration': 4.581}, {'end': 179.45, 'text': 'which literally means $500 to $750 profit per camera, which means I used to be able to install a four-camera system.', 'start': 168.266, 'duration': 11.184}, {'end': 183.291, 'text': 'have the check in my hand in about three hours.', 'start': 179.45, 'duration': 3.841}], 'summary': 'Installing digital surveillance systems can yield $500-$750 profit per camera, allowing for quick earnings.', 'duration': 28.11, 'max_score': 155.181, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/OY_fz16lPvE/pics/OY_fz16lPvE155181.jpg'}, {'end': 252.903, 'src': 'embed', 'start': 227.519, 'weight': 5, 'content': [{'end': 233.341, 'text': "So if something blows up, if something doesn't work out right, you may not be able to bill for time,", 'start': 227.519, 'duration': 5.822}, {'end': 235.462, 'text': "but you're not necessarily losing very much money.", 'start': 233.341, 'duration': 2.121}, {'end': 242.453, 'text': "The warning that I will give you and I've done a lot of these surveillance systems and I've seen them blow up is surveillance system.", 'start': 236.107, 'duration': 6.346}, {'end': 247.598, 'text': 'installation is a very hardware intensive type of technology.', 'start': 242.453, 'duration': 5.145}, {'end': 252.903, 'text': 'So if you make a mistake, you can eat a big loss.', 'start': 248.078, 'duration': 4.825}], 'summary': 'Surveillance system installation is hardware-intensive; errors can lead to big losses.', 'duration': 25.384, 'max_score': 227.519, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/OY_fz16lPvE/pics/OY_fz16lPvE227519.jpg'}, {'end': 306.148, 'src': 'embed', 'start': 275.694, 'weight': 3, 'content': [{'end': 277.115, 'text': 'But please keep in your mind.', 'start': 275.694, 'duration': 1.421}, {'end': 279.316, 'text': 'this is one of those facets of technology.', 'start': 277.115, 'duration': 2.201}, {'end': 283.799, 'text': "if you're going to do that, you have to plan extraordinarily well.", 'start': 279.316, 'duration': 4.483}, {'end': 287.837, 'text': 'You have to purchase your equipment from good vendors.', 'start': 284.355, 'duration': 3.482}, {'end': 295.181, 'text': "And basically, when you walk in the door, you have to know exactly what you're doing.", 'start': 288.497, 'duration': 6.684}, {'end': 298.643, 'text': 'If you do, this is easy money.', 'start': 296.022, 'duration': 2.621}, {'end': 303.086, 'text': 'This, digital surveillance systems, this is the crap you can make $1, 000 an hour at.', 'start': 298.683, 'duration': 4.403}, {'end': 306.148, 'text': "And I'm not joking, not being melodramatic.", 'start': 303.126, 'duration': 3.022}], 'summary': 'Proper planning and equipment in digital surveillance systems can make $1,000 an hour.', 'duration': 30.454, 'max_score': 275.694, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/OY_fz16lPvE/pics/OY_fz16lPvE275694.jpg'}], 'start': 5.339, 'title': 'Digital surveillance systems', 'summary': 'Introduces digital surveillance systems, covering types of systems, cameras, and concepts, and discusses the potential of making $500 to $1,000 profit per camera, emphasizing the need for meticulous planning and professionalism.', 'chapters': [{'end': 132.662, 'start': 5.339, 'title': 'Introduction to digital surveillance systems', 'summary': "Introduces digital surveillance systems, covering the types of systems, cameras, and concepts, including the difference between old analog and new ip-based systems, and upcoming classes on spec'ing, installing analog and network surveillance systems.", 'duration': 127.323, 'highlights': ['The chapter covers the introduction to digital surveillance systems, including the types of systems, cameras, and concepts such as analog and IP-based systems.', 'The chapter mentions upcoming classes on how to spec out a surveillance system, install analog surveillance systems, and install network surveillance systems.', 'The chapter emphasizes the difference between old analog and new IP-based digital surveillance systems, highlighting the need to understand the concepts and differences between the two types of systems.', 'The chapter stresses the necessity for understanding the concepts of digital surveillance systems and the different types of surveillance systems and cameras.']}, {'end': 337.886, 'start': 132.983, 'title': 'Digital surveillance systems: easy money', 'summary': 'Discusses the potential of making $500 to $1,000 profit per camera by installing digital surveillance systems, emphasizing the need for meticulous planning and professionalism to avoid potential losses of up to $3,000.', 'duration': 204.903, 'highlights': ['Installing digital surveillance systems can generate $500 to $1,000 profit per camera, with potential to earn $1,000 an hour. By installing digital surveillance systems, one can earn $500 to $1,000 profit per camera, making it a lucrative opportunity to potentially earn $1,000 an hour.', 'Emphasizes the need for meticulous planning, professional approach, and purchasing equipment from reliable vendors to avoid substantial losses. The chapter underscores the importance of meticulous planning, professionalism, and sourcing equipment from reputable vendors to mitigate the risk of substantial losses.', 'Warns about the potential for significant losses, up to $3,000, if mistakes are made during surveillance system installation. A cautionary note is provided regarding the possibility of incurring losses of up to $3,000 if errors occur during the installation of surveillance systems.']}], 'duration': 332.547, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/OY_fz16lPvE/pics/OY_fz16lPvE5339.jpg', 'highlights': ['Installing digital surveillance systems can generate $500 to $1,000 profit per camera, with potential to earn $1,000 an hour.', 'The chapter emphasizes the difference between old analog and new IP-based digital surveillance systems, highlighting the need to understand the concepts and differences between the two types of systems.', 'The chapter stresses the necessity for understanding the concepts of digital surveillance systems and the different types of surveillance systems and cameras.', 'Emphasizes the need for meticulous planning, professional approach, and purchasing equipment from reliable vendors to avoid substantial losses.', 'The chapter mentions upcoming classes on how to spec out a surveillance system, install analog surveillance systems, and install network surveillance systems.', 'Warns about the potential for significant losses, up to $3,000, if mistakes are made during surveillance system installation.']}, {'end': 1380.918, 'segs': [{'end': 391.226, 'src': 'embed', 'start': 356.007, 'weight': 2, 'content': [{'end': 359.688, 'text': "we're going to go over the different types of digital surveillance systems, the different types of technology.", 'start': 356.007, 'duration': 3.681}, {'end': 363.01, 'text': "we're going to go over the types of cameras that you're going to worry about.", 'start': 359.688, 'duration': 3.322}, {'end': 367.613, 'text': "We're going to talk about things that you should consider when you're purchasing equipment.", 'start': 363.19, 'duration': 4.423}, {'end': 371.555, 'text': "We're going to talk about some of the legal issues that you should think about.", 'start': 367.853, 'duration': 3.702}, {'end': 373.917, 'text': "And basically, then we'll just wrap all this up.", 'start': 371.936, 'duration': 1.981}, {'end': 377.9, 'text': "So if you give me a second, we'll dive into this class, Introduction to Digital Surveillance Systems.", 'start': 373.957, 'duration': 3.943}, {'end': 391.226, 'text': "So there's two basic types of digital surveillance systems that you are going to be dealing with when you get into digital surveillance systems.", 'start': 383.7, 'duration': 7.526}], 'summary': 'Introduction to digital surveillance systems covering types of technology and legal considerations.', 'duration': 35.219, 'max_score': 356.007, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/OY_fz16lPvE/pics/OY_fz16lPvE356007.jpg'}, {'end': 455.554, 'src': 'embed', 'start': 432.602, 'weight': 1, 'content': [{'end': 440.306, 'text': 'So you have a cable that runs all the way from this camera, wherever this camera is, to a port on a computer that looks like this.', 'start': 432.602, 'duration': 7.704}, {'end': 442.667, 'text': 'This is called a BNC connector.', 'start': 440.346, 'duration': 2.321}, {'end': 447.73, 'text': 'And it is what is normally used in digital surveillance system for analog systems.', 'start': 443.128, 'duration': 4.602}, {'end': 451.212, 'text': 'So you have what is called a home run.', 'start': 448.21, 'duration': 3.002}, {'end': 452.893, 'text': "There's no breaks in the connection.", 'start': 451.332, 'duration': 1.561}, {'end': 454.054, 'text': "It doesn't go through switches.", 'start': 452.973, 'duration': 1.081}, {'end': 455.554, 'text': "It doesn't go through networking equipment.", 'start': 454.094, 'duration': 1.46}], 'summary': 'Bnc connector used for direct camera-to-computer connection in surveillance systems.', 'duration': 22.952, 'max_score': 432.602, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/OY_fz16lPvE/pics/OY_fz16lPvE432602.jpg'}, {'end': 676.47, 'src': 'embed', 'start': 648.509, 'weight': 3, 'content': [{'end': 653.994, 'text': 'Well, with these appliance based DVRs, these are really dirt cheap.', 'start': 648.509, 'duration': 5.485}, {'end': 655.295, 'text': "They're based off of Linux.", 'start': 654.074, 'duration': 1.221}, {'end': 657.616, 'text': 'They use very inexpensive parts inside.', 'start': 655.675, 'duration': 1.941}, {'end': 663.241, 'text': 'So a four camera DVR like this may only cost you $200.', 'start': 657.997, 'duration': 5.244}, {'end': 667.504, 'text': 'A 16 camera DVR may only cost you $500.', 'start': 663.241, 'duration': 4.263}, {'end': 670.045, 'text': 'So that can be a huge price difference.', 'start': 667.504, 'duration': 2.541}, {'end': 676.47, 'text': 'The issue is and this is where you have to be careful is when you have a PC-based DVR.', 'start': 670.786, 'duration': 5.684}], 'summary': 'Appliance-based dvrs are inexpensive, with 4-camera dvrs costing $200 and 16-camera dvrs costing $500.', 'duration': 27.961, 'max_score': 648.509, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/OY_fz16lPvE/pics/OY_fz16lPvE648509.jpg'}, {'end': 972.689, 'src': 'embed', 'start': 945.749, 'weight': 4, 'content': [{'end': 953.452, 'text': 'You can plug this into the same network that you plug your PC into or you plug your voice over IP phone into.', 'start': 945.749, 'duration': 7.703}, {'end': 960.875, 'text': 'This transmits data over the TCP IP protocol over Ethernet.', 'start': 954.472, 'duration': 6.403}, {'end': 969.199, 'text': "So that's the big difference between the old analog cameras and the new IP cameras.", 'start': 961.155, 'duration': 8.044}, {'end': 972.689, 'text': 'This transmits over old coax cable.', 'start': 969.439, 'duration': 3.25}], 'summary': 'New ip cameras transmit data over tcp ip protocol, unlike old analog cameras.', 'duration': 26.94, 'max_score': 945.749, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/OY_fz16lPvE/pics/OY_fz16lPvE945749.jpg'}, {'end': 1341.175, 'src': 'embed', 'start': 1314.82, 'weight': 0, 'content': [{'end': 1319.082, 'text': 'So this records an actual high definition quality.', 'start': 1314.82, 'duration': 4.262}, {'end': 1329.908, 'text': 'So when I have my store, I could use one of these cameras for a thousand foot room and surveil the entire room to a quality that if anybody walked in,', 'start': 1319.382, 'duration': 10.526}, {'end': 1331.389, 'text': 'you could identify them in court.', 'start': 1329.908, 'duration': 1.481}, {'end': 1332.49, 'text': 'Very good.', 'start': 1331.93, 'duration': 0.56}, {'end': 1337.073, 'text': 'With these, the sky is also the limit on resolution.', 'start': 1333.531, 'duration': 3.542}, {'end': 1341.175, 'text': 'So they have 11 megapixel cameras or 15 megapixel cameras.', 'start': 1337.313, 'duration': 3.862}], 'summary': 'High-definition cameras can surveil a thousand-foot room with 11-15 megapixel resolution, enabling identification in court.', 'duration': 26.355, 'max_score': 1314.82, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/OY_fz16lPvE/pics/OY_fz16lPvE1314820.jpg'}], 'start': 338.743, 'title': 'Digital surveillance systems', 'summary': 'Provides an introduction to digital surveillance systems, covering different types such as analog and ip-based systems, legal considerations, setup with bnc connectors and siamese cable, types of dvrs, cost differences, repair considerations, differences between analog and ip-based systems, use of coax cable and tcp/ip, intelligence and recording capabilities of ip cameras, and superior image quality of ip systems, including a five-megapixel camera recording in high definition.', 'chapters': [{'end': 411.741, 'start': 338.743, 'title': 'Intro to digital surveillance systems', 'summary': 'Covers an introduction to digital surveillance systems, discussing the different types of systems and technologies, including analog and ip-based systems, and legal considerations when purchasing equipment.', 'duration': 72.998, 'highlights': ['The chapter covers an introduction to digital surveillance systems, discussing the different types of systems and technologies, including analog and IP-based systems, and legal considerations when purchasing equipment.', 'Two basic types of digital surveillance systems are discussed: analog surveillance systems and IP-based surveillance systems, providing an overview of the technology involved.', 'Legal issues related to digital surveillance systems are highlighted as an important consideration when purchasing equipment.']}, {'end': 791.426, 'start': 412.611, 'title': 'Analog surveillance system and dvr types', 'summary': 'Discusses analog surveillance systems, explaining the setup with bnc connectors, siamese cable, and the two types of dvrs - pc-based and appliance-based, highlighting cost differences and repair considerations.', 'duration': 378.815, 'highlights': ['Analog Surveillance System Setup Explains the setup of analog surveillance systems with BNC connectors and Siamese cable, facilitating direct connection from cameras to a computer port.', 'PC-based DVR vs. Appliance-based DVR Compares the cost differences between PC-based and appliance-based DVRs, indicating that PC-based DVRs can cost between $600 to $1600 for different camera systems, while appliance-based DVRs can be as low as $200 for a four-camera system, emphasizing cost variation.', 'Repair Considerations for DVRs Emphasizes the repair differences between PC-based and appliance-based DVRs, stating that while PC-based DVRs can have parts replaced individually, appliance-based DVRs require entire replacement if any parts fail, highlighting the maintenance contrast.']}, {'end': 1380.918, 'start': 791.446, 'title': 'Analog vs ip cameras: technology and quality', 'summary': 'Explains the difference between analog and ip-based surveillance systems, highlighting the use of coax cable and tcp/ip, the intelligence and recording capabilities of ip cameras, and the superior image quality of ip systems, with a five-megapixel camera recording in high definition.', 'duration': 589.472, 'highlights': ['IP cameras have intelligence and recording capabilities, with a five-megapixel camera recording in high definition. IP cameras have their own intelligence and recording capabilities, allowing them to act as a complete surveillance system. A five-megapixel camera can record in high definition, providing superior image quality for surveillance.', 'Analog cameras have lower quality, with the best analog system recording at DVD quality. Analog cameras have lower quality, with the best analog system recording at DVD quality, which is insufficient for identifying individuals in court. Multiple analog cameras are required to surveil a room effectively.', 'Difference in connectivity: Analog cameras use coax cable while IP cameras use TCP/IP and Ethernet, enabling integration with networks and routers. Analog cameras use coax cable and a British Naval Connector, while IP cameras use TCP/IP and Ethernet, allowing integration with networks, routers, and other networking equipment.']}], 'duration': 1042.175, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/OY_fz16lPvE/pics/OY_fz16lPvE338743.jpg', 'highlights': ['IP cameras have intelligence and recording capabilities, with a five-megapixel camera recording in high definition.', 'Analog Surveillance System Setup Explains the setup of analog surveillance systems with BNC connectors and Siamese cable, facilitating direct connection from cameras to a computer port.', 'The chapter covers an introduction to digital surveillance systems, discussing the different types of systems and technologies, including analog and IP-based systems, and legal considerations when purchasing equipment.', 'PC-based DVR vs. Appliance-based DVR Compares the cost differences between PC-based and appliance-based DVRs, indicating that PC-based DVRs can cost between $600 to $1600 for different camera systems, while appliance-based DVRs can be as low as $200 for a four-camera system, emphasizing cost variation.', 'Difference in connectivity: Analog cameras use coax cable while IP cameras use TCP/IP and Ethernet, enabling integration with networks and routers.']}, {'end': 2026.755, 'segs': [{'end': 1485.635, 'src': 'embed', 'start': 1407.91, 'weight': 0, 'content': [{'end': 1414.933, 'text': "It's more like it takes a lot of individual pictures and then plays them back to you so fast that you see the action happen.", 'start': 1407.91, 'duration': 7.023}, {'end': 1420.575, 'text': 'So 30 frames per second is actual real time.', 'start': 1415.573, 'duration': 5.002}, {'end': 1430.718, 'text': 'So if you hear that a camera or a system does 30 frames per second per camera, that means it is either viewable or recordable in real time.', 'start': 1420.695, 'duration': 10.023}, {'end': 1434.659, 'text': "It actually, you know, when you watch the video, it's as fast as I'm moving now.", 'start': 1430.778, 'duration': 3.881}, {'end': 1437.82, 'text': 'It is real time.', 'start': 1434.739, 'duration': 3.081}, {'end': 1441.881, 'text': '15 frames per second is perceived real time.', 'start': 1437.84, 'duration': 4.041}, {'end': 1453.981, 'text': 'So you, as a human being, If you see something, if you see a video at 15 frames per second, you are going to perceive it as real-time video.', 'start': 1442.321, 'duration': 11.66}, {'end': 1459.965, 'text': "It might be slightly off, like a tad bit off, but as far as you're concerned, it will seem like it's real-time.", 'start': 1454.001, 'duration': 5.964}, {'end': 1462.167, 'text': "There won't be any jitters or anything like that.", 'start': 1460.005, 'duration': 2.162}, {'end': 1468.791, 'text': "Now, if you go down to, let's say, 7.5 frames per second, then that's where you start to see the jitters.", 'start': 1462.827, 'duration': 5.964}, {'end': 1477.07, 'text': 'So you know, if this video was at 7.5 frames per second, you would see me doing things like this.', 'start': 1469.212, 'duration': 7.858}, {'end': 1483.434, 'text': 'basically, you can still see me moving and doing stuff, but they would be very choppy.', 'start': 1477.07, 'duration': 6.364}, {'end': 1485.635, 'text': "it's like i'm doing the moonwalk or something.", 'start': 1483.434, 'duration': 2.201}], 'summary': '30 frames per second is real time; 15 frames is perceived real time; 7.5 frames shows jitters.', 'duration': 77.725, 'max_score': 1407.91, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/OY_fz16lPvE/pics/OY_fz16lPvE1407910.jpg'}, {'end': 1578.383, 'src': 'embed', 'start': 1502.845, 'weight': 3, 'content': [{'end': 1507.15, 'text': "the next shot is you see the guy's face here and the next shot is you see the guy's face here.", 'start': 1502.845, 'duration': 4.305}, {'end': 1509.012, 'text': "so that's like one frame per second.", 'start': 1507.15, 'duration': 1.862}, {'end': 1513.076, 'text': 'so 30 frames per second is actual real time.', 'start': 1509.012, 'duration': 4.064}, {'end': 1515.719, 'text': '15 frames per second is perceived real time.', 'start': 1513.076, 'duration': 2.643}, {'end': 1519.363, 'text': 'seven and a half frames per second is gittery.', 'start': 1515.719, 'duration': 3.644}, {'end': 1522.329, 'text': 'but you get the point Less than that.', 'start': 1519.363, 'duration': 2.966}, {'end': 1526.33, 'text': "that's when it seems like people are transporting across the room.", 'start': 1522.329, 'duration': 4.001}, {'end': 1528.211, 'text': "So that's frames per second.", 'start': 1526.35, 'duration': 1.861}, {'end': 1533.472, 'text': "Now, when you're looking at frames per second FPS.", 'start': 1529.051, 'duration': 4.421}, {'end': 1542.295, 'text': 'you have to be careful when you are looking at these systems, because FPS will be used for a number of different specifications.', 'start': 1533.472, 'duration': 8.823}, {'end': 1549.34, 'text': "So if you're using network video recorders, IP cameras, it's all usually pretty much the same.", 'start': 1542.616, 'duration': 6.724}, {'end': 1553.31, 'text': 'With DVRs, with the old analog cameras, it can be very, very different.', 'start': 1549.721, 'duration': 3.589}, {'end': 1561.735, 'text': 'So when they talk about frames per second, the first thing you have to look at is what is the live view FPS.', 'start': 1554.071, 'duration': 7.664}, {'end': 1572.04, 'text': "So the live view FPS or frames per second, is when you are looking at the monitor and you're watching all the cameras in actual real time.", 'start': 1562.235, 'duration': 9.805}, {'end': 1573.801, 'text': 'how fast is everything moving?', 'start': 1572.04, 'duration': 1.761}, {'end': 1578.383, 'text': 'And it will say 30 frames per second or 15 frames per second or seven and a half frames per second.', 'start': 1574.001, 'duration': 4.382}], 'summary': '30 fps is actual real time, 15 fps is perceived real time, and <7.5 fps is gittery; varies for different systems.', 'duration': 75.538, 'max_score': 1502.845, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/OY_fz16lPvE/pics/OY_fz16lPvE1502845.jpg'}, {'end': 1625.258, 'src': 'embed', 'start': 1598.568, 'weight': 6, 'content': [{'end': 1605.57, 'text': 'So you may see live view at 30 frames per second, but then it may only record at 7.5 frames per second.', 'start': 1598.568, 'duration': 7.002}, {'end': 1608.151, 'text': 'So this is something that you have to keep in mind.', 'start': 1606.13, 'duration': 2.021}, {'end': 1613.492, 'text': 'What the live view is and what the record frames per second is can be two different things.', 'start': 1608.231, 'duration': 5.261}, {'end': 1623.937, 'text': 'Then the final thing is, you have to look at the frame rate per second, the FPS per channel and per card.', 'start': 1614.113, 'duration': 9.824}, {'end': 1625.258, 'text': 'so what does that mean?', 'start': 1623.937, 'duration': 1.321}], 'summary': 'Live view at 30 fps, recording at 7.5 fps. consider fps per channel and card.', 'duration': 26.69, 'max_score': 1598.568, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/OY_fz16lPvE/pics/OY_fz16lPvE1598568.jpg'}, {'end': 1682.597, 'src': 'embed', 'start': 1654.892, 'weight': 8, 'content': [{'end': 1666.04, 'text': "What they'll do is per channel you can do 30 frames per second real time in recording, but per card it will only do 60 frames per second.", 'start': 1654.892, 'duration': 11.148}, {'end': 1671.628, 'text': 'So with this, what that means is basically everything has to add up.', 'start': 1667.284, 'duration': 4.344}, {'end': 1675.051, 'text': 'So one camera could be at 30 frames per second.', 'start': 1671.948, 'duration': 3.103}, {'end': 1682.597, 'text': "Then you could have, let's say, two cameras at 15, or let's say, then you could have two cameras at 10 frames per second.", 'start': 1675.651, 'duration': 6.946}], 'summary': 'The system allows 30 frames per second per channel and 60 frames per second per card, enabling flexibility in camera configurations.', 'duration': 27.705, 'max_score': 1654.892, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/OY_fz16lPvE/pics/OY_fz16lPvE1654892.jpg'}, {'end': 1913.373, 'src': 'embed', 'start': 1884.593, 'weight': 9, 'content': [{'end': 1888.276, 'text': '1800 by 1180 or whatever it is, etc.', 'start': 1884.593, 'duration': 3.683}, {'end': 1895.961, 'text': "It'll actually give you, with IP cameras, it will give you the resolution just like if you were looking at a monitor resolution.", 'start': 1888.356, 'duration': 7.605}, {'end': 1898.483, 'text': "So it's a lot easier to understand with that.", 'start': 1895.981, 'duration': 2.502}, {'end': 1900.724, 'text': 'So analog cameras are TVL.', 'start': 1898.823, 'duration': 1.901}, {'end': 1907.008, 'text': 'IP cameras are just resolution, how many pixels it records.', 'start': 1901.365, 'duration': 5.643}, {'end': 1913.373, 'text': 'The big thing to remember with these IP cameras is everybody thinks all IP cameras are megapixel cameras.', 'start': 1907.389, 'duration': 5.984}], 'summary': 'Ip cameras provide resolution similar to monitor resolution, making it easier to understand. they record pixels, not tvl, and not all ip cameras are megapixel cameras.', 'duration': 28.78, 'max_score': 1884.593, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/OY_fz16lPvE/pics/OY_fz16lPvE1884593.jpg'}, {'end': 2009.508, 'src': 'embed', 'start': 1952.898, 'weight': 10, 'content': [{'end': 1958.96, 'text': 'So although they use IP, the quality is the quality of one of these little pieces of crap.', 'start': 1952.898, 'duration': 6.062}, {'end': 1963.262, 'text': 'So remember, not all IP cameras are megapixel cameras.', 'start': 1959.26, 'duration': 4.002}, {'end': 1968.904, 'text': 'Some of the less expensive IP cameras have the same quality as this stuff.', 'start': 1963.742, 'duration': 5.162}, {'end': 1982.515, 'text': "The final thing when we're dealing with definitions and understanding this system is that you can record video based on motion or based on events that happen within the video.", 'start': 1969.605, 'duration': 12.91}, {'end': 1988.439, 'text': "So when you're recording all the video that's going on, that takes up a lot of space.", 'start': 1983.015, 'duration': 5.424}, {'end': 1996.905, 'text': "Even now, with one terabyte hard drives, two terabyte hard drives, three terabyte hard drives, if you've got 16 cameras recording 24 hours a day,", 'start': 1988.539, 'duration': 8.366}, {'end': 2000.92, 'text': 'It eats up the space every once in a while.', 'start': 1999.058, 'duration': 1.862}, {'end': 2009.508, 'text': 'So what you can do is you can actually record based upon when there is motion going on in the scene.', 'start': 2001.22, 'duration': 8.288}], 'summary': 'Not all ip cameras are megapixel; recording based on motion saves space.', 'duration': 56.61, 'max_score': 1952.898, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/OY_fz16lPvE/pics/OY_fz16lPvE1952898.jpg'}], 'start': 1383.246, 'title': 'Fps and surveillance systems', 'summary': 'Covers the concept of frames per second (fps) in video surveillance, where 30 fps is real-time, emphasizing its impact on live view, record rate, and monitoring quality. it also explains the resolution differences between analog and ip cameras, with analog cameras having tvl ranging from 320 to 600 and ip cameras offering higher resolution in megapixels.', 'chapters': [{'end': 1526.33, 'start': 1383.246, 'title': 'Understanding frames per second (fps)', 'summary': 'Explains the concept of frames per second (fps) in video surveillance, where 30 fps is real-time, 15 fps is perceived real time, 7.5 fps is jittery, and below that causes choppiness and transport-like effects in video footage.', 'duration': 143.084, 'highlights': ['30 frames per second is actual real time. This means the camera or system is viewable or recordable in real time.', '15 frames per second is perceived real time. At this rate, human perception considers the video as real-time, with minimal perceptible delays.', '7.5 frames per second is jittery. At this FPS, the video becomes choppy and exhibits noticeable jitteriness in motion.', 'One frame per second causes transport-like effects in video footage. At this frame rate, the video appears as if people are transporting across the room due to extreme choppiness.']}, {'end': 1753.607, 'start': 1526.35, 'title': 'Understanding frames per second in surveillance systems', 'summary': 'Explains the importance of frames per second (fps) in surveillance systems, emphasizing the differences between live view fps, record rate, and fps per channel. it also highlights the impact of fps on real-time monitoring and recording quality.', 'duration': 227.257, 'highlights': ['Frames per second (FPS) is crucial in surveillance systems, impacting real-time monitoring and recording quality. Emphasizes the importance of FPS in surveillance systems for monitoring and recording quality.', 'Live view FPS determines the real-time monitoring experience, with 30 FPS providing real-time views and lower FPS resulting in jittery visuals. Explains the impact of live view FPS on real-time monitoring, with 30 FPS offering real-time views and lower FPS resulting in jittery visuals.', 'The difference between live view FPS and record rate can lead to discrepancies in real-time views and recorded footage. Highlights the potential discrepancies between live view FPS and record rate, impacting real-time views and recorded footage.', 'The FPS per channel and per card must be considered to ensure the system can handle the required frame rates for all cameras. Stresses the importance of considering FPS per channel and per card to ensure the system can handle required frame rates for all cameras.', 'The total frame rates across channels and cards need to be compatible to achieve real-time recording, with the potential for limitations in less expensive systems. Underlines the need for compatibility of total frame rates across channels and cards for real-time recording, with potential limitations in less expensive systems.']}, {'end': 2026.755, 'start': 1754.027, 'title': 'Analog vs ip cameras resolution', 'summary': 'Explains the difference in resolution between analog and ip cameras, with analog cameras having tvl as the measure of resolution, ranging from 320 tvl to 600 tvl, while ip cameras offer higher resolution in megapixels, with the ability to zoom in and capture fine details.', 'duration': 272.728, 'highlights': ['Analog cameras have a resolution measured in TVL, ranging from 320 TVL to 600 TVL, while IP cameras offer resolution in megapixels, with higher quality and the ability to zoom in. Analog cameras have a resolution measured in TVL, ranging from 320 TVL to 600 TVL, while IP cameras offer resolution in megapixels, with higher quality and the ability to zoom in.', 'IP cameras provide resolutions in megapixels, such as 1 megapixel, 5 megapixels, 10 megapixels, and 20 megapixels, offering superior image quality compared to analog cameras. IP cameras provide resolutions in megapixels, such as 1 megapixel, 5 megapixels, 10 megapixels, and 20 megapixels, offering superior image quality compared to analog cameras.', 'Recording video based on motion or events can save storage space, especially when using multiple cameras, to avoid unnecessary recording and conserve storage capacity. Recording video based on motion or events can save storage space, especially when using multiple cameras, to avoid unnecessary recording and conserve storage capacity.']}], 'duration': 643.509, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/OY_fz16lPvE/pics/OY_fz16lPvE1383246.jpg', 'highlights': ['30 frames per second is actual real time. This means the camera or system is viewable or recordable in real time.', '15 frames per second is perceived real time. At this rate, human perception considers the video as real-time, with minimal perceptible delays.', '7.5 frames per second is jittery. At this FPS, the video becomes choppy and exhibits noticeable jitteriness in motion.', 'One frame per second causes transport-like effects in video footage. At this frame rate, the video appears as if people are transporting across the room due to extreme choppiness.', 'Frames per second (FPS) is crucial in surveillance systems, impacting real-time monitoring and recording quality. Emphasizes the importance of FPS in surveillance systems for monitoring and recording quality.', 'Live view FPS determines the real-time monitoring experience, with 30 FPS providing real-time views and lower FPS resulting in jittery visuals. Explains the impact of live view FPS on real-time monitoring, with 30 FPS offering real-time views and lower FPS resulting in jittery visuals.', 'The difference between live view FPS and record rate can lead to discrepancies in real-time views and recorded footage. Highlights the potential discrepancies between live view FPS and record rate, impacting real-time views and recorded footage.', 'The FPS per channel and per card must be considered to ensure the system can handle the required frame rates for all cameras. Stresses the importance of considering FPS per channel and per card to ensure the system can handle required frame rates for all cameras.', 'The total frame rates across channels and cards need to be compatible to achieve real-time recording, with the potential for limitations in less expensive systems. Underlines the need for compatibility of total frame rates across channels and cards for real-time recording, with potential limitations in less expensive systems.', 'Analog cameras have a resolution measured in TVL, ranging from 320 TVL to 600 TVL, while IP cameras offer resolution in megapixels, with higher quality and the ability to zoom in. Analog cameras have a resolution measured in TVL, ranging from 320 TVL to 600 TVL, while IP cameras offer resolution in megapixels, with higher quality and the ability to zoom in.', 'IP cameras provide resolutions in megapixels, such as 1 megapixel, 5 megapixels, 10 megapixels, and 20 megapixels, offering superior image quality compared to analog cameras. IP cameras provide resolutions in megapixels, such as 1 megapixel, 5 megapixels, 10 megapixels, and 20 megapixels, offering superior image quality compared to analog cameras.', 'Recording video based on motion or events can save storage space, especially when using multiple cameras, to avoid unnecessary recording and conserve storage capacity. Recording video based on motion or events can save storage space, especially when using multiple cameras, to avoid unnecessary recording and conserve storage capacity.']}, {'end': 2762.736, 'segs': [{'end': 2113.047, 'src': 'embed', 'start': 2041.919, 'weight': 0, 'content': [{'end': 2049.601, 'text': "Remember, the analog systems, these are old systems, basically you're using coax cable to connect cameras back to DVRs.", 'start': 2041.919, 'duration': 7.682}, {'end': 2058.312, 'text': 'DVRs can either be PC based, where you have a card, installed into the computer, or it can be an appliance.', 'start': 2050.041, 'duration': 8.271}, {'end': 2062.353, 'text': "Remember, this is more expensive, but it's going to be a better quality.", 'start': 2058.891, 'duration': 3.462}, {'end': 2066.335, 'text': 'And if anything goes wrong with that DVR, you can fix it generally.', 'start': 2062.853, 'duration': 3.482}, {'end': 2072.237, 'text': "If anything goes wrong with this appliance, it's cheaper, but you got to replace the entire darn thing.", 'start': 2066.855, 'duration': 5.382}, {'end': 2073.697, 'text': 'Something to think about.', 'start': 2072.956, 'duration': 0.741}, {'end': 2075.949, 'text': 'We talked about the IP system.', 'start': 2074.246, 'duration': 1.703}, {'end': 2083.92, 'text': 'So the IP with these cameras, this camera is an actual computer device, just like a voice over IP telephone.', 'start': 2075.969, 'duration': 7.951}, {'end': 2085.422, 'text': "It's no longer a dumb device.", 'start': 2083.96, 'duration': 1.462}, {'end': 2087.145, 'text': 'This has brain power.', 'start': 2085.862, 'duration': 1.283}, {'end': 2089.748, 'text': 'This particular one has its own web server.', 'start': 2087.485, 'duration': 2.263}, {'end': 2097.595, 'text': "If I plug this into the network, I can go to the IP address, I can view what it's viewing, it can retort internally, it can do a lot of cool stuff.", 'start': 2090.129, 'duration': 7.466}, {'end': 2100.177, 'text': 'This is an IP camera.', 'start': 2097.855, 'duration': 2.322}, {'end': 2108.063, 'text': 'This can send video over the IP network back to an NVR, a network video recorder.', 'start': 2100.617, 'duration': 7.446}, {'end': 2113.047, 'text': 'The nice part with this is you can use your internal network infrastructure.', 'start': 2108.384, 'duration': 4.663}], 'summary': 'Analog systems use coax cable, while ip systems utilize network infrastructure. ip cameras have their own web server and can send video over the ip network to an nvr.', 'duration': 71.128, 'max_score': 2041.919, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/OY_fz16lPvE/pics/OY_fz16lPvE2041919.jpg'}, {'end': 2162.783, 'src': 'embed', 'start': 2135.938, 'weight': 2, 'content': [{'end': 2143.361, 'text': 'if you have to install this on the other side of a warehouse, you have to run a cable all the way from this, all the way you know,', 'start': 2135.938, 'duration': 7.423}, {'end': 2147.036, 'text': 'a thousand feet back to where VR is.', 'start': 2143.361, 'duration': 3.675}, {'end': 2150.838, 'text': "We also talked about, remember, they're a hybrid system.", 'start': 2147.997, 'duration': 2.841}, {'end': 2155.82, 'text': "So you'll see more and more of these out there, especially if you look at GeoVision systems or Kodakon systems.", 'start': 2150.858, 'duration': 4.962}, {'end': 2162.783, 'text': "What these are, are they're the old DVRs, but they also pull in data from IP video cameras.", 'start': 2156.18, 'duration': 6.603}], 'summary': 'Hybrid systems like geovision and kodakon integrate ip video cameras with old dvrs.', 'duration': 26.845, 'max_score': 2135.938, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/OY_fz16lPvE/pics/OY_fz16lPvE2135938.jpg'}, {'end': 2249.12, 'src': 'embed', 'start': 2224.321, 'weight': 5, 'content': [{'end': 2231.006, 'text': "A lot of times you'll have a 30 frame rate per second for live view and 7.5 frame rate per second for recorded.", 'start': 2224.321, 'duration': 6.685}, {'end': 2240.255, 'text': "Again, not necessarily a bad thing, but remember if you're selling this to a client, You know, the client wants what they think they bought.", 'start': 2231.867, 'duration': 8.388}, {'end': 2246.939, 'text': "And if they think, you know, if they're getting something that is less of a quality than they think they bought, you know, it all goes back.", 'start': 2240.416, 'duration': 6.523}, {'end': 2249.12, 'text': 'Then there was resolution.', 'start': 2247.599, 'duration': 1.521}], 'summary': 'Live view at 30 fps, recorded at 7.5 fps. quality must match client expectations.', 'duration': 24.799, 'max_score': 2224.321, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/OY_fz16lPvE/pics/OY_fz16lPvE2224321.jpg'}, {'end': 2290.035, 'src': 'embed', 'start': 2265.711, 'weight': 8, 'content': [{'end': 2276.942, 'text': "but approximately DVD quality and again ain't as good as you think it is and then goes all the way down to about 320 TVL, which is a low quality.", 'start': 2265.711, 'duration': 11.231}, {'end': 2279.165, 'text': 'Basically, you see the blob moving across the room.', 'start': 2276.983, 'duration': 2.182}, {'end': 2283.99, 'text': "Resolution with IP-based cameras, you're dealing with the same resolution you would with monitors.", 'start': 2279.665, 'duration': 4.325}, {'end': 2290.035, 'text': "It'll say you know, say 648 by 710, or you know all the all the different definitions.", 'start': 2284.03, 'duration': 6.005}], 'summary': 'Ip-based cameras have varying resolutions, from dvd quality to 320 tvl, affecting image clarity.', 'duration': 24.324, 'max_score': 2265.711, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/OY_fz16lPvE/pics/OY_fz16lPvE2265711.jpg'}, {'end': 2359.212, 'src': 'embed', 'start': 2331.755, 'weight': 7, 'content': [{'end': 2340.579, 'text': "Because remember, if you have 16 cameras all pumping data back to that DVR, 24 hours a day, seven days a week, you're gonna fill up the hard drive.", 'start': 2331.755, 'duration': 8.824}, {'end': 2345.522, 'text': "By only recording when there's motion, it just makes life easier.", 'start': 2340.619, 'duration': 4.903}, {'end': 2351.825, 'text': "So that's some of the basic stuff you have to understand with these systems when you're dealing with digital surveillance systems.", 'start': 2345.602, 'duration': 6.223}, {'end': 2359.212, 'text': 'So we just talked about the systems.', 'start': 2357.691, 'duration': 1.521}], 'summary': "Recording only when there's motion saves hard drive space in digital surveillance systems.", 'duration': 27.457, 'max_score': 2331.755, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/OY_fz16lPvE/pics/OY_fz16lPvE2331755.jpg'}, {'end': 2575.849, 'src': 'embed', 'start': 2542.272, 'weight': 6, 'content': [{'end': 2543.633, 'text': "So that's a dome camera.", 'start': 2542.272, 'duration': 1.361}, {'end': 2549.959, 'text': "The next kind of camera is basically the camera that I've been showing you so far.", 'start': 2544.634, 'duration': 5.325}, {'end': 2552.982, 'text': 'This is called a box camera.', 'start': 2550.5, 'duration': 2.482}, {'end': 2562.881, 'text': "So the reason it's called a box camera is when you buy it, you just get And this is the important thing.", 'start': 2553.142, 'duration': 9.739}, {'end': 2566.083, 'text': 'When you buy a box camera, all you get is this.', 'start': 2563.421, 'duration': 2.662}, {'end': 2567.184, 'text': 'You get a box.', 'start': 2566.543, 'duration': 0.641}, {'end': 2568.404, 'text': "That's a camera.", 'start': 2567.764, 'duration': 0.64}, {'end': 2575.849, 'text': 'The issue with this, the good part or the bad part, is you have to buy all the ancillary stuff.', 'start': 2569.525, 'duration': 6.324}], 'summary': 'Comparison of dome and box cameras, box camera requires additional purchases', 'duration': 33.577, 'max_score': 2542.272, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/OY_fz16lPvE/pics/OY_fz16lPvE2542272.jpg'}], 'start': 2027.115, 'title': 'Digital surveillance systems', 'summary': 'Provides an overview of analog, ip, and hybrid digital surveillance systems, highlighting cost, quality, and network infrastructure compatibility. it also covers frame rate, resolution, and types of cameras, emphasizing the importance of understanding these systems when dealing with clients.', 'chapters': [{'end': 2155.82, 'start': 2027.115, 'title': 'Types of digital surveillance systems', 'summary': 'Discusses the basic overview of analog, ip, and hybrid digital surveillance systems, highlighting the advantages and features of each, including cost, quality, and network infrastructure compatibility.', 'duration': 128.705, 'highlights': ['The IP camera has its own web server, allowing users to view its feed and perform various functions via the IP address, making it a versatile and powerful device.', 'Analog systems utilize coaxial cables to connect cameras back to DVRs, which can be PC-based or appliance-based, with the latter being more cost-effective but requiring replacement of the entire unit in case of malfunction.', 'Hybrid systems, such as those from GeoVision and Kodakon, are increasingly prevalent and offer a combination of features from analog and IP systems, providing flexibility and compatibility.', 'IP systems allow for the use of existing network infrastructure, enabling efficient placement of cameras without the need for extensive cabling, leading to cost and time savings.', 'Analog systems, while older, are known for their reliability, as any issues with the DVR can typically be fixed, ensuring continued functionality and potential cost savings.']}, {'end': 2762.736, 'start': 2156.18, 'title': 'Digital surveillance systems and camera types', 'summary': 'Covers the basics of digital surveillance systems, including frame rate per second, resolution for analog and ip-based cameras, and different types of cameras such as bullet, dome, and box cameras, emphasizing the importance of understanding these systems when dealing with clients.', 'duration': 606.556, 'highlights': ['Analog cameras have a resolution measured in TV lines, ranging from 600 TVL for DVD quality to 320 TVL for low quality, while IP-based cameras have resolutions measured in megapixels, emphasizing the need for understanding the differences in resolution for different cameras. Analog cameras have resolutions measured in TV lines, ranging from 600 TVL for DVD quality to 320 TVL for low quality, while IP-based cameras have resolutions measured in megapixels, emphasizing the need for understanding the differences in resolution for different cameras.', 'Different frame rates per second are crucial for live view and recorded footage, where a higher frame rate provides smoother video, and the distinction between live view and recorded frame rates is essential for managing client expectations. Different frame rates per second are crucial for live view and recorded footage, where a higher frame rate provides smoother video, and the distinction between live view and recorded frame rates is essential for managing client expectations.', 'Understanding different types of cameras, such as bullet, dome, and box cameras, is important for clients as they have varying features and installation requirements, affecting the overall cost and functionality of the surveillance system. Understanding different types of cameras, such as bullet, dome, and box cameras, is important for clients as they have varying features and installation requirements, affecting the overall cost and functionality of the surveillance system.', 'The importance of motion recording to optimize storage space and avoid filling up the hard drive with continuous footage from multiple cameras, reducing the need for excessive storage capacity and improving system efficiency. The importance of motion recording to optimize storage space and avoid filling up the hard drive with continuous footage from multiple cameras, reducing the need for excessive storage capacity and improving system efficiency.']}], 'duration': 735.621, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/OY_fz16lPvE/pics/OY_fz16lPvE2027115.jpg', 'highlights': ['IP systems allow for the use of existing network infrastructure, enabling efficient placement of cameras without the need for extensive cabling, leading to cost and time savings.', 'Analog systems, while older, are known for their reliability, as any issues with the DVR can typically be fixed, ensuring continued functionality and potential cost savings.', 'Hybrid systems, such as those from GeoVision and Kodakon, are increasingly prevalent and offer a combination of features from analog and IP systems, providing flexibility and compatibility.', 'The IP camera has its own web server, allowing users to view its feed and perform various functions via the IP address, making it a versatile and powerful device.', 'Analog systems utilize coaxial cables to connect cameras back to DVRs, which can be PC-based or appliance-based, with the latter being more cost-effective but requiring replacement of the entire unit in case of malfunction.', 'Different frame rates per second are crucial for live view and recorded footage, where a higher frame rate provides smoother video, and the distinction between live view and recorded frame rates is essential for managing client expectations.', 'Understanding different types of cameras, such as bullet, dome, and box cameras, is important for clients as they have varying features and installation requirements, affecting the overall cost and functionality of the surveillance system.', 'The importance of motion recording to optimize storage space and avoid filling up the hard drive with continuous footage from multiple cameras, reducing the need for excessive storage capacity and improving system efficiency.', 'Analog cameras have a resolution measured in TV lines, ranging from 600 TVL for DVD quality to 320 TVL for low quality, while IP-based cameras have resolutions measured in megapixels, emphasizing the need for understanding the differences in resolution for different cameras.']}, {'end': 3921.176, 'segs': [{'end': 2789.31, 'src': 'embed', 'start': 2762.736, 'weight': 0, 'content': [{'end': 2767.299, 'text': "so I use these vandal proof domes because they weren't very high up.", 'start': 2762.736, 'duration': 4.563}, {'end': 2773.864, 'text': 'if somebody wanted to hit a camera, I mean like literally a lot of cameras were mounted this high up in a hallway.', 'start': 2767.299, 'duration': 6.565}, {'end': 2777.847, 'text': 'so we use these vandal proof domes to make sure nobody did anything stupid to them.', 'start': 2773.864, 'duration': 3.983}, {'end': 2783.671, 'text': "one of the warnings that I'll give you with a vandal proof dome is you can hit this vandal proof dome with a sledgehammer and you're not going to hurt the camera,", 'start': 2777.847, 'duration': 5.824}, {'end': 2789.31, 'text': "but it's only going to stay in the wall as well as you have mounted it.", 'start': 2784.707, 'duration': 4.603}], 'summary': 'Vandal proof domes protect cameras from damage; can withstand sledgehammer hits.', 'duration': 26.574, 'max_score': 2762.736, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/OY_fz16lPvE/pics/OY_fz16lPvE2762736.jpg'}, {'end': 3014.266, 'src': 'embed', 'start': 2989.076, 'weight': 6, 'content': [{'end': 3000.94, 'text': 'What auto iris means is that inside either the camera or the camera lens, if the light gets too bright, the camera will automatically close the iris,', 'start': 2989.076, 'duration': 11.864}, {'end': 3005.161, 'text': 'what allows light to come into the camera to try to darken the image.', 'start': 3000.94, 'duration': 4.221}, {'end': 3008.742, 'text': 'Basically think about it kind of like automatic sunglasses.', 'start': 3005.301, 'duration': 3.441}, {'end': 3014.266, 'text': 'If the light gets too bright, it will try to darken the image so that it can still see the image.', 'start': 3008.842, 'duration': 5.424}], 'summary': 'Auto iris in camera adjusts to bright light, darkening image like automatic sunglasses.', 'duration': 25.19, 'max_score': 2989.076, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/OY_fz16lPvE/pics/OY_fz16lPvE2989076.jpg'}, {'end': 3069.013, 'src': 'embed', 'start': 3038.876, 'weight': 7, 'content': [{'end': 3042.778, 'text': 'The final thing is something called wide dynamic range.', 'start': 3038.876, 'duration': 3.902}, {'end': 3044.199, 'text': 'You will see this on cameras now.', 'start': 3042.798, 'duration': 1.401}, {'end': 3053.983, 'text': "Wide dynamic range, again, it's basically that the camera can see in more types of lighting conditions.", 'start': 3044.639, 'duration': 9.344}, {'end': 3056.424, 'text': 'It can see the quality of light better.', 'start': 3054.063, 'duration': 2.361}, {'end': 3060.247, 'text': "So these are the things that you have to think about when you're dealing with cameras.", 'start': 3056.844, 'duration': 3.403}, {'end': 3064.129, 'text': "You've got bullet cameras, you've got dome cameras, you've got box cameras.", 'start': 3060.267, 'duration': 3.862}, {'end': 3069.013, 'text': "When you're dealing with box cameras, remember you're going to have to also buy the lens and you're going to have to buy the mount.", 'start': 3064.39, 'duration': 4.623}], 'summary': 'Cameras with wide dynamic range can see in various lighting conditions, improving light quality.', 'duration': 30.137, 'max_score': 3038.876, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/OY_fz16lPvE/pics/OY_fz16lPvE3038876.jpg'}, {'end': 3126.322, 'src': 'embed', 'start': 3098.721, 'weight': 1, 'content': [{'end': 3104.85, 'text': 'one thing I would say with this is is, when in doubt, buy outside cameras.', 'start': 3098.721, 'duration': 6.129}, {'end': 3113.495, 'text': "so when you're dealing with industrial settings, let's say, you're dealing with warehouses, you're dealing with, um with, let's say, stables.", 'start': 3104.85, 'duration': 8.645}, {'end': 3116.416, 'text': 'you know farm areas, barns, that type of thing.', 'start': 3113.495, 'duration': 2.921}, {'end': 3120.819, 'text': "although it's technically inside, that's still going to be a pretty harsh environment.", 'start': 3116.416, 'duration': 4.403}, {'end': 3126.322, 'text': "so you might as well buy outside cameras just to make sure they're okay inside cameras.", 'start': 3120.819, 'duration': 5.503}], 'summary': 'For harsh environments like warehouses and stables, buy outdoor cameras to ensure the safety of indoor areas.', 'duration': 27.601, 'max_score': 3098.721, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/OY_fz16lPvE/pics/OY_fz16lPvE3098721.jpg'}, {'end': 3189.164, 'src': 'embed', 'start': 3147.826, 'weight': 2, 'content': [{'end': 3149.927, 'text': 'We then talked about low light cameras.', 'start': 3147.826, 'duration': 2.101}, {'end': 3155.85, 'text': "You'll hear lux, like 0.02 lux means an incredibly low amount of light.", 'start': 3150.387, 'duration': 5.463}, {'end': 3159.272, 'text': 'Basically it means star light, the camera can see everything okay.', 'start': 3155.87, 'duration': 3.402}, {'end': 3160.873, 'text': 'We talked about no light.', 'start': 3159.692, 'duration': 1.181}, {'end': 3164.355, 'text': 'These are cameras that can view in the infrared spectrum.', 'start': 3161.153, 'duration': 3.202}, {'end': 3166.876, 'text': 'So once the light level goes below a certain point,', 'start': 3164.435, 'duration': 2.441}, {'end': 3172.318, 'text': 'They turn on basically their infrared flashlight and then they can see everything in that infrared spectrum.', 'start': 3167.156, 'duration': 5.162}, {'end': 3174.279, 'text': 'Then we talked about auto iris.', 'start': 3172.738, 'duration': 1.541}, {'end': 3181.341, 'text': 'This allows the camera to automatically open or close the iris within the camera to allow more or less light.', 'start': 3174.619, 'duration': 6.722}, {'end': 3183.722, 'text': 'Then we talked about wide dynamic range.', 'start': 3181.681, 'duration': 2.041}, {'end': 3189.164, 'text': 'Basically all wide dynamic ranges is that the camera can see in more lighting conditions better.', 'start': 3184.002, 'duration': 5.162}], 'summary': 'Discussed low light and no light cameras, including lux levels and infrared spectrum. also covered auto iris and wide dynamic range for better lighting conditions.', 'duration': 41.338, 'max_score': 3147.826, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/OY_fz16lPvE/pics/OY_fz16lPvE3147826.jpg'}, {'end': 3515.95, 'src': 'heatmap', 'start': 3453.301, 'weight': 1, 'content': [{'end': 3461.006, 'text': 'So basically you put in there motion tracking, whatever the setting for that is, and if it sees any motion, it will follow that motion.', 'start': 3453.301, 'duration': 7.705}, {'end': 3468.931, 'text': 'or you can have that robotic function done by the DVR or NVR, the network video recorder.', 'start': 3462.689, 'duration': 6.242}, {'end': 3475.113, 'text': 'Basically, you can program into the computer system what you want this thing to follow, and it will follow that way.', 'start': 3469.231, 'duration': 5.882}, {'end': 3481.555, 'text': 'So, with the automatic function of a PTZ, it can either be built into the camera if it is,', 'start': 3475.453, 'duration': 6.102}, {'end': 3488.898, 'text': 'you actually have to go into the camera itself and configure it or you can have it set up through the DVR, through the computer system,', 'start': 3481.555, 'duration': 7.343}, {'end': 3490.198, 'text': 'and that is what will control it.', 'start': 3488.898, 'duration': 1.3}, {'end': 3491.839, 'text': "So that's one of the things to think about with these.", 'start': 3490.258, 'duration': 1.581}, {'end': 3498.4, 'text': "Now, why I hate these for analog systems is they're just horrible.", 'start': 3492.495, 'duration': 5.905}, {'end': 3499.501, 'text': 'Really, really.', 'start': 3498.981, 'duration': 0.52}, {'end': 3499.982, 'text': 'I hate them.', 'start': 3499.581, 'duration': 0.401}, {'end': 3501.123, 'text': 'I hate them with a passion.', 'start': 3500.262, 'duration': 0.861}, {'end': 3502.103, 'text': "I won't install them anymore.", 'start': 3501.163, 'duration': 0.94}, {'end': 3502.604, 'text': 'I refuse.', 'start': 3502.123, 'duration': 0.481}, {'end': 3515.95, 'text': 'The problem is with these guys is it is the ultimate in Chinese manufacturing problems where, In order for the network video or the DVR,', 'start': 3504.506, 'duration': 11.444}], 'summary': 'Ptz cameras allow motion tracking and can be controlled through the dvr or nvr, but they may have issues in analog systems due to chinese manufacturing problems.', 'duration': 62.649, 'max_score': 3453.301, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/OY_fz16lPvE/pics/OY_fz16lPvE3453301.jpg'}, {'end': 3721.545, 'src': 'embed', 'start': 3695.208, 'weight': 8, 'content': [{'end': 3699.691, 'text': "And it's miserable, and it's god-awful, and I swear to god, you can't pay me enough money to do it.", 'start': 3695.208, 'duration': 4.483}, {'end': 3704.468, 'text': "I can't, like I said, like, You know, I'm talking to you guys in the real world.", 'start': 3700.651, 'duration': 3.817}, {'end': 3706.39, 'text': "I'm trying to talk to you guys as professionals.", 'start': 3704.488, 'duration': 1.902}, {'end': 3710.033, 'text': "And I'm telling you, I hate these analog PTZ cameras.", 'start': 3706.67, 'duration': 3.363}, {'end': 3712.135, 'text': 'I hate, I hate.', 'start': 3710.774, 'duration': 1.361}, {'end': 3713.737, 'text': "I don't care how much money.", 'start': 3712.436, 'duration': 1.301}, {'end': 3716.5, 'text': "I don't care if I'm making $1, 000 a day off these things.", 'start': 3713.757, 'duration': 2.743}, {'end': 3718.642, 'text': 'I hate them with a passion.', 'start': 3716.86, 'duration': 1.782}, {'end': 3720.063, 'text': "I've installed them numerous times.", 'start': 3718.662, 'duration': 1.401}, {'end': 3721.545, 'text': "And they're always just.", 'start': 3720.123, 'duration': 1.422}], 'summary': 'The speaker strongly dislikes analog ptz cameras, even when earning $1,000 a day.', 'duration': 26.337, 'max_score': 3695.208, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/OY_fz16lPvE/pics/OY_fz16lPvE3695208.jpg'}, {'end': 3795.837, 'src': 'embed', 'start': 3760.872, 'weight': 9, 'content': [{'end': 3762.993, 'text': 'The DVR is what sends the information here.', 'start': 3760.872, 'duration': 2.121}, {'end': 3771.278, 'text': "When you're looking at cabling, you know, normal analog cabling, you run a coax cable on a power supply to the camera.", 'start': 3763.553, 'duration': 7.725}, {'end': 3777.262, 'text': 'The only addition with a PTZ is that you have to run a wire to the PTZ controller.', 'start': 3771.639, 'duration': 5.623}, {'end': 3782.086, 'text': 'So you have to install that controller onto the computer and that controller is what will communicate with this.', 'start': 3777.342, 'duration': 4.744}, {'end': 3783.887, 'text': 'I talked about those protocols.', 'start': 3782.526, 'duration': 1.361}, {'end': 3787.051, 'text': "Those protocols aren't a joke, they are nasty.", 'start': 3784.929, 'duration': 2.122}, {'end': 3795.837, 'text': "If you're going to do PTZ cameras, I'll talk about purchasing equipment a little bit later, but this is one of the things you know.", 'start': 3788.252, 'duration': 7.585}], 'summary': 'Dvr sends info, ptz cameras require extra wiring and controller. protocols are vital.', 'duration': 34.965, 'max_score': 3760.872, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/OY_fz16lPvE/pics/OY_fz16lPvE3760872.jpg'}, {'end': 3842.417, 'src': 'embed', 'start': 3811.484, 'weight': 4, 'content': [{'end': 3813.645, 'text': "I'm really, really serious with these things.", 'start': 3811.484, 'duration': 2.161}, {'end': 3816.086, 'text': "But that's PTZ cameras.", 'start': 3813.865, 'duration': 2.221}, {'end': 3818.347, 'text': 'Again, this is one of the differences.', 'start': 3816.526, 'duration': 1.821}, {'end': 3823.57, 'text': "If you're in the IP world, so I've been talking about how evil analog PTZ cameras are.", 'start': 3818.508, 'duration': 5.062}, {'end': 3829.193, 'text': "If you're in the IP world, well, they're no more difficult to configure than any other networking device.", 'start': 3823.97, 'duration': 5.223}, {'end': 3833.836, 'text': 'You basically just go to the IP address, you plug in, you tell it what you want it to do, and it does it.', 'start': 3829.333, 'duration': 4.503}, {'end': 3838.447, 'text': "And it's beautiful and it's gorgeous and it's everything that a really cool robotic camera should be.", 'start': 3834.136, 'duration': 4.311}, {'end': 3842.417, 'text': "This is everything that's wrong with electronics.", 'start': 3839.209, 'duration': 3.208}], 'summary': 'Ptz cameras in the ip world are easy to configure and operate, requiring only ip address setup.', 'duration': 30.933, 'max_score': 3811.484, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/OY_fz16lPvE/pics/OY_fz16lPvE3811484.jpg'}, {'end': 3885.747, 'src': 'embed', 'start': 3854.142, 'weight': 10, 'content': [{'end': 3856.505, 'text': "Now let's talk a little bit about networking.", 'start': 3854.142, 'duration': 2.363}, {'end': 3861.489, 'text': "So overall, if you're going to be doing these surveillance systems, they're pretty easy.", 'start': 3856.605, 'duration': 4.884}, {'end': 3865.212, 'text': "You need to know a little bit of networking, but you don't have to know a lot.", 'start': 3862.13, 'duration': 3.082}, {'end': 3867.134, 'text': "I'm going to give you some of the warnings.", 'start': 3865.232, 'duration': 1.902}, {'end': 3873.6, 'text': "I'm going to give you some of the things that you should consider when you plug one of these surveillance systems onto the network.", 'start': 3867.154, 'duration': 6.446}, {'end': 3885.747, 'text': 'Now the first thing is is that you make sure you have enough upload speed to be able to support off-site viewing of your DVR or NVR.', 'start': 3874.1, 'duration': 11.647}], 'summary': 'Setting up surveillance systems requires basic networking knowledge, ensuring sufficient upload speed for off-site viewing.', 'duration': 31.605, 'max_score': 3854.142, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/OY_fz16lPvE/pics/OY_fz16lPvE3854142.jpg'}], 'start': 2762.736, 'title': 'Selecting and mounting security cameras', 'summary': 'Discusses the importance of selecting and mounting security cameras properly, emphasizing vandal proof domes, indoor vs outdoor cameras, low light and no light cameras, auto iris, and wide dynamic range.', 'chapters': [{'end': 3147.405, 'start': 2762.736, 'title': 'Selecting and mounting security cameras', 'summary': 'Discusses the importance of selecting and mounting security cameras properly, emphasizing the use of vandal proof domes, indoor vs outdoor cameras, low light and no light cameras, and additional camera features such as auto iris and wide dynamic range.', 'duration': 384.669, 'highlights': ['Vandal proof domes are important for security cameras, but proper mounting is crucial to prevent them from being knocked out. Vandal proof domes are designed to withstand tampering, but if not mounted securely, they can still be easily dislodged and rendered ineffective.', 'Emphasizing the importance of using outdoor cameras in harsh environments like warehouses and barns, as they are better suited for such conditions. Outdoor cameras are recommended for industrial settings, even if technically indoors, to ensure durability in harsh environments.', 'Explanation of low light and no light cameras, including their capabilities to operate in extremely low lux conditions and utilize infrared light for night vision. Low light and no light cameras are capable of operating in very low lux conditions and using infrared light for night vision, ensuring visibility in challenging lighting situations.', 'Description of additional camera features such as auto iris and wide dynamic range, providing insights into their functionalities for adapting to varying lighting conditions. Auto iris and wide dynamic range are additional features that allow cameras to adapt to changing lighting conditions, ensuring optimal image quality in diverse environments.', 'The recommendation to prioritize outdoor cameras over indoor ones in industrial settings due to their durability and suitability for harsh conditions. Outdoor cameras are advised for industrial environments, such as warehouses and barns, to ensure longevity and performance in challenging conditions.']}, {'end': 3694.048, 'start': 3147.826, 'title': 'Ptz cameras and surveillance technology', 'summary': 'Discusses the functionalities and drawbacks of ptz cameras in surveillance technology, including low light cameras, auto iris, wide dynamic range, and the challenges of configuring and communicating with ptz cameras in both analog and ip systems.', 'duration': 546.222, 'highlights': ['PTZ cameras are discussed in detail, including their functionalities, drawbacks, and challenges in both analog and IP systems. The chapter extensively covers the functionalities and challenges of PTZ cameras, including their robotic functionalities, drawbacks, and complexities in configuration and communication in both analog and IP systems.', 'The chapter explains the concept of low light cameras, including lux levels and infrared spectrum viewing capabilities. It discusses the concept of low light cameras, explaining lux levels and the ability to view in the infrared spectrum, providing insights into their capabilities in low light conditions.', 'The discussion covers auto iris functionality, enabling cameras to automatically adjust the iris to control light exposure. The chapter provides an overview of auto iris functionality, highlighting its capability to automatically adjust the iris within the camera to control the amount of light entering the lens.', 'Wide dynamic range technology is explained, emphasizing its ability to capture clear images in varying lighting conditions. The explanation of wide dynamic range technology showcases its capability to capture clear images in diverse lighting conditions, enhancing the understanding of its importance in surveillance technology.']}, {'end': 3921.176, 'start': 3695.208, 'title': 'Challenges of analog ptz cameras', 'summary': 'Discusses the challenges of analog ptz cameras, including the need for specific cabling, protocols, and the importance of purchasing high-quality equipment, as well as the ease of configuring ip cameras in comparison.', 'duration': 225.968, 'highlights': ["Analog PTZ cameras are described as miserable and god-awful, emphasizing the speaker's strong dislike for them, regardless of the potential income, and the need for high-quality purchases to avoid frustration. The speaker expresses strong negative feelings towards analog PTZ cameras, highlighting the challenges of working with them and the importance of investing in high-quality equipment.", 'PTZ cameras require specific cabling, including coax cable and power supply, along with the addition of a wire to the PTZ controller, emphasizing the additional complexity compared to standard analog cameras. The installation of PTZ cameras involves specific cabling requirements, including the need for a dedicated wire to the PTZ controller, adding to the complexity of the setup.', 'The significance of networking considerations for surveillance systems, including the need for sufficient upload speed to support off-site viewing, is emphasized, with the process of port forwarding explained as a way to enable remote viewing. The chapter highlights the importance of networking considerations for surveillance systems, particularly the need for adequate upload speed to facilitate off-site viewing and the process of port forwarding to enable remote access.']}], 'duration': 1158.44, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/OY_fz16lPvE/pics/OY_fz16lPvE2762736.jpg', 'highlights': ['Vandal proof domes are crucial for security cameras, but proper mounting is essential to prevent tampering.', 'Outdoor cameras are recommended for industrial settings to ensure durability in harsh environments.', 'Low light and no light cameras operate in very low lux conditions and use infrared light for night vision.', 'Auto iris and wide dynamic range features allow cameras to adapt to changing lighting conditions.', "PTZ cameras' functionalities, drawbacks, and challenges are extensively covered in both analog and IP systems.", 'Low light cameras can view in the infrared spectrum, providing insights into their capabilities in low light conditions.', 'Auto iris functionality enables cameras to automatically adjust the iris to control light exposure.', 'Wide dynamic range technology captures clear images in diverse lighting conditions, enhancing surveillance technology.', 'Analog PTZ cameras are described as miserable and god-awful, emphasizing the challenges of working with them.', 'PTZ cameras require specific cabling, adding to the complexity of the setup compared to standard analog cameras.', 'Networking considerations for surveillance systems, including sufficient upload speed and port forwarding, are emphasized.']}, {'end': 4444.741, 'segs': [{'end': 3948.176, 'src': 'embed', 'start': 3921.656, 'weight': 0, 'content': [{'end': 3930.203, 'text': 'Well, what I will tell you is, if people are going to be doing offsite viewing, you need to make sure your upload speed for your ISP,', 'start': 3921.656, 'duration': 8.547}, {'end': 3933.925, 'text': 'your internet service, is at least two megabits per second.', 'start': 3930.203, 'duration': 3.722}, {'end': 3945.994, 'text': 'If the person is going to be watching at home, you are now broadcasting or streaming video from the auto place to his house.', 'start': 3934.946, 'duration': 11.048}, {'end': 3948.176, 'text': 'That takes up a lot of bandwidth.', 'start': 3946.095, 'duration': 2.081}], 'summary': 'For offsite viewing, ensure 2 mbps upload speed to handle video streaming.', 'duration': 26.52, 'max_score': 3921.656, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/OY_fz16lPvE/pics/OY_fz16lPvE3921656.jpg'}, {'end': 3994.933, 'src': 'embed', 'start': 3968.848, 'weight': 1, 'content': [{'end': 3974.214, 'text': 'they started streaming all that video And basically the internet just crashed for everybody.', 'start': 3968.848, 'duration': 5.366}, {'end': 3979.361, 'text': 'So with networking, make sure that the upload speed is at least two megabits per second.', 'start': 3974.554, 'duration': 4.807}, {'end': 3981.983, 'text': 'And again, The higher the better.', 'start': 3979.481, 'duration': 2.502}, {'end': 3987.227, 'text': "You know, 2 megabits per second is for the old analog systems that stream video, but it's not that high quality.", 'start': 3982.303, 'duration': 4.924}, {'end': 3994.933, 'text': 'If you start getting into megapixel cameras and really high definition and you want to view that from home, you may need 10 or 20 megabits per second.', 'start': 3987.647, 'duration': 7.286}], 'summary': 'Ensure at least 2 mbps upload speed for video streaming, 10-20 mbps for high definition.', 'duration': 26.085, 'max_score': 3968.848, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/OY_fz16lPvE/pics/OY_fz16lPvE3968848.jpg'}, {'end': 4035.51, 'src': 'embed', 'start': 4011.677, 'weight': 3, 'content': [{'end': 4018.44, 'text': "So if you're using low quality IP cameras, like I talked about, where they have the resolution of one of these old cameras,", 'start': 4011.677, 'duration': 6.763}, {'end': 4020.121, 'text': "you don't use a lot of bandwidth.", 'start': 4018.44, 'duration': 1.681}, {'end': 4022.141, 'text': 'You use a few megabits per second.', 'start': 4020.501, 'duration': 1.64}, {'end': 4027.404, 'text': "You know, if you've got a 100 megabit per second switch or a gigabit per second switch, it won't matter.", 'start': 4022.702, 'duration': 4.702}, {'end': 4028.364, 'text': "You won't notice anything.", 'start': 4027.424, 'duration': 0.94}, {'end': 4029.763, 'text': "Here's the issue.", 'start': 4029.022, 'duration': 0.741}, {'end': 4035.51, 'text': 'These 5 megabit per second cameras push out a lot of data.', 'start': 4030.544, 'duration': 4.966}], 'summary': 'Low-quality ip cameras use few megabits per second, but push out a lot of data.', 'duration': 23.833, 'max_score': 4011.677, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/OY_fz16lPvE/pics/OY_fz16lPvE4011677.jpg'}, {'end': 4299.281, 'src': 'embed', 'start': 4272.398, 'weight': 2, 'content': [{'end': 4284.996, 'text': "So what they want is they want the $4, 000 system that with the $20, 000 quality and that doesn't work.", 'start': 4272.398, 'duration': 12.598}, {'end': 4287.117, 'text': "I've seen this time and time again.", 'start': 4285.116, 'duration': 2.001}, {'end': 4292.979, 'text': "Again, clients just get this image in their head about what they think they're buying.", 'start': 4287.137, 'duration': 5.842}, {'end': 4295.66, 'text': "Even if you warn them, that's not what they're buying.", 'start': 4293.619, 'duration': 2.041}, {'end': 4296.72, 'text': 'So be careful with this.', 'start': 4295.76, 'duration': 0.96}, {'end': 4299.281, 'text': 'Expectations management is a huge thing.', 'start': 4296.96, 'duration': 2.321}], 'summary': 'Clients expect $20,000 quality from $4,000 system, leading to issues with expectations management.', 'duration': 26.883, 'max_score': 4272.398, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/OY_fz16lPvE/pics/OY_fz16lPvE4272398.jpg'}], 'start': 3921.656, 'title': 'Offsite viewing bandwidth considerations and network speed', 'summary': 'Discusses the importance of ensuring at least a 2 megabits per second upload speed for offsite viewing and emphasizes the need for network upload speed, recommending specific bandwidth requirements to avoid business disruption and project failure.', 'chapters': [{'end': 3968.848, 'start': 3921.656, 'title': 'Offsite viewing bandwidth considerations', 'summary': 'Discusses the importance of ensuring at least a 2 megabits per second upload speed for offsite viewing to avoid overwhelming the internet connection, with examples of past mistakes causing business disruption.', 'duration': 47.192, 'highlights': ['Ensuring a minimum upload speed of 2 megabits per second is crucial for offsite viewing to avoid overwhelming the internet connection.', "Past mistakes without checking the client's upload speed led to business disruption when connecting from home."]}, {'end': 4444.741, 'start': 3968.848, 'title': 'Network speed and client expectations', 'summary': 'Emphasizes the importance of network upload speed, recommending at least 2 megabits per second for streaming analog video and 10-20 megabits per second for high-definition cameras, and highlights the need for managing client expectations to avoid dissatisfaction and project failure.', 'duration': 475.893, 'highlights': ['The importance of network upload speed is emphasized, recommending at least 2 megabits per second for streaming analog video and 10-20 megabits per second for high-definition cameras. At least 2 megabits per second for streaming analog video and 10-20 megabits per second for high-definition cameras.', 'Managing client expectations is highlighted as crucial to avoid dissatisfaction and project failure. Several examples are provided, emphasizing the need for clear communication and setting realistic expectations to prevent costly project failures.', 'The risk of congesting internal networks with IP cameras, especially high-resolution ones, is discussed, underscoring the potential impact on network performance and the need for careful network planning. The risk of congesting internal networks with high-resolution IP cameras is raised, and the importance of careful network planning is emphasized to prevent performance issues.']}], 'duration': 523.085, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/OY_fz16lPvE/pics/OY_fz16lPvE3921656.jpg', 'highlights': ['Ensuring a minimum upload speed of 2 megabits per second is crucial for offsite viewing to avoid overwhelming the internet connection.', 'The importance of network upload speed is emphasized, recommending at least 2 megabits per second for streaming analog video and 10-20 megabits per second for high-definition cameras.', 'Managing client expectations is highlighted as crucial to avoid dissatisfaction and project failure.', 'The risk of congesting internal networks with IP cameras, especially high-resolution ones, is discussed, underscoring the potential impact on network performance and the need for careful network planning.']}, {'end': 4897.788, 'segs': [{'end': 4515.744, 'src': 'embed', 'start': 4470.255, 'weight': 0, 'content': [{'end': 4473.537, 'text': 'Here in Maryland, we have a lot of strict audio laws.', 'start': 4470.255, 'duration': 3.282}, {'end': 4475.499, 'text': "It's really weird.", 'start': 4474.838, 'duration': 0.661}, {'end': 4477.44, 'text': 'Like video, you can record almost anything.', 'start': 4475.539, 'duration': 1.901}, {'end': 4483.144, 'text': "But if you want to record people's voices, we have a lot of funny things with our law.", 'start': 4477.48, 'duration': 5.664}, {'end': 4490.448, 'text': 'Basically, our law states that that you have to have mutual consent in order to record audio.', 'start': 4483.244, 'duration': 7.204}, {'end': 4495.851, 'text': 'So both parties have to agree to have a conversation recorded for it to be recorded.', 'start': 4490.468, 'duration': 5.383}, {'end': 4500.173, 'text': "If you're in a state such as Virginia, you only need one party to agree.", 'start': 4496.211, 'duration': 3.962}, {'end': 4505.115, 'text': 'So if one person agrees to be recorded, you can record the entire conversation.', 'start': 4500.513, 'duration': 4.602}, {'end': 4507.897, 'text': 'Here in Maryland, both parties have to agree.', 'start': 4505.676, 'duration': 2.221}, {'end': 4515.744, 'text': "So when you're doing things like if you want to do audio recording here in Maryland, let's say, if you have a gas station,", 'start': 4508.317, 'duration': 7.427}], 'summary': "Maryland has strict audio laws requiring mutual consent for recording conversations, unlike virginia's one-party consent law.", 'duration': 45.489, 'max_score': 4470.255, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/OY_fz16lPvE/pics/OY_fz16lPvE4470255.jpg'}, {'end': 4704.427, 'src': 'embed', 'start': 4680.469, 'weight': 2, 'content': [{'end': 4687.554, 'text': "So when you go out there, make sure you do the research and make sure you're actually buying good quality equipment.", 'start': 4680.469, 'duration': 7.085}, {'end': 4697.643, 'text': 'The big problem I see with a lot of people that install surveillance systems is that they use incredibly low quality equipment and then it breaks all the time.', 'start': 4687.998, 'duration': 9.645}, {'end': 4702.866, 'text': "Remember, as I talk about in business, the number one cost you're always going to have is labor.", 'start': 4698.003, 'duration': 4.863}, {'end': 4704.427, 'text': "It's not going to be this equipment.", 'start': 4703.046, 'duration': 1.381}], 'summary': 'Using good quality equipment is crucial for reliable surveillance systems to avoid frequent breakdowns and high labor costs.', 'duration': 23.958, 'max_score': 4680.469, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/OY_fz16lPvE/pics/OY_fz16lPvE4680469.jpg'}, {'end': 4752.406, 'src': 'embed', 'start': 4727.037, 'weight': 4, 'content': [{'end': 4732.341, 'text': "so when you're doing this, make sure you go out, you research, you buy high quality parts.", 'start': 4727.037, 'duration': 5.304}, {'end': 4740.929, 'text': "if you're doing megapixel cameras, uh, those those ip based cameras actually do have very reputable manufacturers behind them.", 'start': 4732.341, 'duration': 8.588}, {'end': 4745.893, 'text': 'you can buy sony, you can buy toshiba, um iq, and vision is a very good quality.', 'start': 4740.929, 'duration': 4.964}, {'end': 4747.394, 'text': 'these are all very good quality things.', 'start': 4745.893, 'duration': 1.501}, {'end': 4752.406, 'text': 'the analog cameras, They all come out of some back room in China.', 'start': 4747.394, 'duration': 5.012}], 'summary': 'Emphasize high-quality parts, reputable manufacturers for megapixel ip cameras, consider brands like sony and toshiba, while analog cameras may lack quality assurance.', 'duration': 25.369, 'max_score': 4727.037, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/OY_fz16lPvE/pics/OY_fz16lPvE4727037.jpg'}, {'end': 4819.271, 'src': 'embed', 'start': 4793.328, 'weight': 3, 'content': [{'end': 4798.81, 'text': "It seems like a great deal until you're the poor schmuck that's been up on the ladder a third time,", 'start': 4793.328, 'duration': 5.482}, {'end': 4801.711, 'text': 'literally swapping out the third camera for that position.', 'start': 4798.81, 'duration': 2.901}, {'end': 4803.472, 'text': "That's really bad.", 'start': 4802.792, 'duration': 0.68}, {'end': 4806.974, 'text': "So when you're buying parts, make sure you buy good quality parts.", 'start': 4803.512, 'duration': 3.462}, {'end': 4816.688, 'text': "Like I say, if it's $50 or $100 difference in price between a good quality camera and a low quality camera, buy the more expensive camera.", 'start': 4807.634, 'duration': 9.054}, {'end': 4819.271, 'text': "it's going to do better for you in the long run.", 'start': 4816.688, 'duration': 2.583}], 'summary': 'Invest in good quality parts for better long-term performance.', 'duration': 25.943, 'max_score': 4793.328, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/OY_fz16lPvE/pics/OY_fz16lPvE4793328.jpg'}], 'start': 4445.321, 'title': 'Surveillance laws and equipment', 'summary': "Discusses the complexities of surveillance laws in maryland, emphasizing mutual consent for audio recording, and highlights the importance of buying high-quality surveillance equipment to avoid frequent replacements and additional costs, citing a partner's experience of having to replace 8 out of 16 $20 cameras.", 'chapters': [{'end': 4602.317, 'start': 4445.321, 'title': 'Surveillance laws in maryland', 'summary': 'Discusses the complexities of surveillance laws in maryland, highlighting the requirement for mutual consent for audio recording and the implications for businesses and individuals, as well as the varying laws in different states. it emphasizes the need for understanding and complying with local laws when implementing surveillance systems.', 'duration': 156.996, 'highlights': ["In Maryland, both parties need mutual consent for audio recording, while in Virginia, only one party's consent is required, impacting the legality of recording conversations (e.g., for businesses like gas stations).", 'Businesses in Maryland must prominently display a notice about video and audio recording on their premises, and individuals entering the premises are deemed to have consented to the recording by doing so.', 'Audio recording in private spaces, such as back offices, may lead to legal challenges, as individuals may claim an expectation of privacy, highlighting the potential implications for businesses and individuals.', 'It is crucial to understand and adhere to local surveillance laws, as they can vary significantly by state, requiring consultation with legal professionals to ensure compliance and avoid legal complications.']}, {'end': 4897.788, 'start': 4602.997, 'title': 'Buying high-quality surveillance equipment', 'summary': "Emphasizes the importance of buying high-quality surveillance equipment to avoid frequent replacements and additional labor costs, and highlights the risks of using low-quality equipment, citing a partner's experience of having to replace 8 out of 16 $20 cameras, and emphasizes the potential cost difference between good and low-quality cameras.", 'duration': 294.791, 'highlights': ['The importance of buying high-quality surveillance equipment is emphasized, as using low-quality equipment may lead to frequent replacements and increased labor costs, illustrated by the example of a partner having to replace 8 out of 16 $20 cameras.', 'Emphasizes the potential cost difference between good and low-quality cameras, highlighting that a $50 or $100 difference in price can significantly impact the long-term performance and labor costs when installing multiple cameras.', 'Recommends conducting thorough research to ensure the purchase of good quality surveillance equipment, particularly for analog cameras, and suggests reputable manufacturers for megapixel and IP-based cameras such as Sony, Toshiba, and IQinVision.', 'Mentions the website supercircuits.com as a resource for a wide range of surveillance equipment, emphasizing the importance of avoiding the purchase of low-quality, cheap equipment to prevent future issues and extra labor.', 'Concludes by highlighting the potential for success in creating a digital surveillance system business without the need for extensive technical knowledge, but emphasizes the need for precision in purchasing to avoid financial losses.']}], 'duration': 452.467, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/OY_fz16lPvE/pics/OY_fz16lPvE4445321.jpg', 'highlights': ["In Maryland, both parties need mutual consent for audio recording, while in Virginia, only one party's consent is required, impacting the legality of recording conversations (e.g., for businesses like gas stations).", 'Businesses in Maryland must prominently display a notice about video and audio recording on their premises, and individuals entering the premises are deemed to have consented to the recording by doing so.', 'The importance of buying high-quality surveillance equipment is emphasized, as using low-quality equipment may lead to frequent replacements and increased labor costs, illustrated by the example of a partner having to replace 8 out of 16 $20 cameras.', 'Emphasizes the potential cost difference between good and low-quality cameras, highlighting that a $50 or $100 difference in price can significantly impact the long-term performance and labor costs when installing multiple cameras.', 'Recommends conducting thorough research to ensure the purchase of good quality surveillance equipment, particularly for analog cameras, and suggests reputable manufacturers for megapixel and IP-based cameras such as Sony, Toshiba, and IQinVision.']}, {'end': 5752.121, 'segs': [{'end': 4968.114, 'src': 'embed', 'start': 4897.848, 'weight': 0, 'content': [{'end': 4904.474, 'text': 'So analog systems, basically you have a coax cable that runs from your camera to your DVR.', 'start': 4897.848, 'duration': 6.626}, {'end': 4909.591, 'text': 'These are relatively inexpensive.', 'start': 4906.909, 'duration': 2.682}, {'end': 4911.732, 'text': 'This is the old technology though.', 'start': 4909.831, 'duration': 1.901}, {'end': 4916.695, 'text': "And again, the best quality you're going to get out of one of these old systems is DVD quality.", 'start': 4912.072, 'duration': 4.623}, {'end': 4919.716, 'text': "And again, I'm going to tell you DVD isn't what you think it is.", 'start': 4916.755, 'duration': 2.961}, {'end': 4922.058, 'text': 'DVD is actually pretty poor quality.', 'start': 4919.776, 'duration': 2.282}, {'end': 4925.52, 'text': "When you're dealing with the analog systems, you can either have PC based systems.", 'start': 4922.338, 'duration': 3.182}, {'end': 4930.863, 'text': 'PC based systems have a card that you install into the PC.', 'start': 4926, 'duration': 4.863}, {'end': 4934.691, 'text': 'And then that turns it into a DVR, digital video recorder.', 'start': 4931.57, 'duration': 3.121}, {'end': 4941.953, 'text': "The cameras all then connect to these BNC, British Naval Connector, connections on the card, and it's a system.", 'start': 4934.851, 'duration': 7.102}, {'end': 4945.694, 'text': 'Or you can buy a DVR appliance.', 'start': 4942.793, 'duration': 2.901}, {'end': 4948.735, 'text': 'Basically, this is just a computer and a box.', 'start': 4945.994, 'duration': 2.741}, {'end': 4952.776, 'text': 'The problem is, is this is going to be a lot less expensive.', 'start': 4949.455, 'duration': 3.321}, {'end': 4959.438, 'text': 'This is going to be half the price of a PC-based system, maybe 3 quarters of a price, or 1 quarter of a price.', 'start': 4952.796, 'duration': 6.642}, {'end': 4963.789, 'text': "But if anything fails, you've got to swap out the entire system.", 'start': 4960.285, 'duration': 3.504}, {'end': 4965.771, 'text': "You can't buy parts for this thing.", 'start': 4963.889, 'duration': 1.882}, {'end': 4968.114, 'text': "So that's one of the things you have to weigh.", 'start': 4966.252, 'duration': 1.862}], 'summary': 'Analog systems use coax cable, offering dvd quality, with pc-based or appliance systems, the latter being less expensive but with potential whole system replacement costs.', 'duration': 70.266, 'max_score': 4897.848, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/OY_fz16lPvE/pics/OY_fz16lPvE4897848.jpg'}, {'end': 5531.868, 'src': 'embed', 'start': 5503.389, 'weight': 4, 'content': [{'end': 5509.432, 'text': "if you're using low quality IP cameras, You can probably use the same networking equipment that you're using right now.", 'start': 5503.389, 'duration': 6.043}, {'end': 5515.236, 'text': "If you're using a lot of these megapixel cameras though, they take up a lot of bandwidth.", 'start': 5509.953, 'duration': 5.283}, {'end': 5521.581, 'text': 'If you have 10 megapixel cameras all sending back real-time high-definition video back to a server,', 'start': 5515.276, 'duration': 6.305}, {'end': 5525.704, 'text': 'they can eat up all the bandwidth on the LAN on the local area network.', 'start': 5521.581, 'duration': 4.123}, {'end': 5526.484, 'text': 'So be careful with this.', 'start': 5525.724, 'duration': 0.76}, {'end': 5531.868, 'text': 'This is why sometimes, as we talked about in the Introduction to Convergence class, you do parallel networks.', 'start': 5526.804, 'duration': 5.064}], 'summary': 'Megapixel cameras consume significant bandwidth, requiring caution and potential need for parallel networks.', 'duration': 28.479, 'max_score': 5503.389, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/OY_fz16lPvE/pics/OY_fz16lPvE5503389.jpg'}, {'end': 5599.684, 'src': 'embed', 'start': 5568.358, 'weight': 3, 'content': [{'end': 5569.899, 'text': 'We talked about client expectations.', 'start': 5568.358, 'duration': 1.541}, {'end': 5572.28, 'text': 'Again, this is going to be one of the biggest things.', 'start': 5570.079, 'duration': 2.201}, {'end': 5580.724, 'text': "Your clients are going to watch movies and they're going to watch TV and they're going to watch all this stuff and they're going to think your surveillance system is going to do much more than it's going to do.", 'start': 5572.48, 'duration': 8.244}, {'end': 5583.485, 'text': 'You have to manage client expectations.', 'start': 5581.124, 'duration': 2.361}, {'end': 5592.253, 'text': 'There is nothing worse than having $6, 000, your cost, installed And having the client get pissed.', 'start': 5583.805, 'duration': 8.448}, {'end': 5594.917, 'text': "Um, it's, it's just bad.", 'start': 5592.714, 'duration': 2.203}, {'end': 5599.684, 'text': 'We talked about the legal considerations, just to see what the legal considerations in your area are.', 'start': 5595.037, 'duration': 4.647}], 'summary': 'Managing client expectations is crucial for successful surveillance system installation and legal considerations should be taken into account.', 'duration': 31.326, 'max_score': 5568.358, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/OY_fz16lPvE/pics/OY_fz16lPvE5568358.jpg'}, {'end': 5702.941, 'src': 'embed', 'start': 5673.69, 'weight': 5, 'content': [{'end': 5675.051, 'text': "They've got a lot of stuff up there.", 'start': 5673.69, 'duration': 1.361}, {'end': 5677.032, 'text': "They've got reviews, etc.", 'start': 5675.091, 'duration': 1.941}, {'end': 5680.394, 'text': 'Just go up there, find some stuff you like, buy it.', 'start': 5677.072, 'duration': 3.322}, {'end': 5682.335, 'text': 'Yeah, take it from there.', 'start': 5681.374, 'duration': 0.961}, {'end': 5685.896, 'text': 'Again, this is the introductory class to this track.', 'start': 5682.735, 'duration': 3.161}, {'end': 5688.817, 'text': "We're going to have a class on IP cameras, megapixel cameras.", 'start': 5685.916, 'duration': 2.901}, {'end': 5692.758, 'text': "We're going to have a class on installing these analog systems.", 'start': 5688.997, 'duration': 3.761}, {'end': 5696.999, 'text': "We're going to have a class on how to spec out systems, how to do site surveys, etc.", 'start': 5692.998, 'duration': 4.001}, {'end': 5699.8, 'text': "So if you're still feeling a little shaky, that's fine.", 'start': 5697.359, 'duration': 2.441}, {'end': 5702.941, 'text': "Like I said, there's going to be at least four more classes in this track.", 'start': 5700.26, 'duration': 2.681}], 'summary': 'Introductory class covers ip cameras, megapixel cameras, installing analog systems, spec out systems, and site surveys. at least four more classes in this track.', 'duration': 29.251, 'max_score': 5673.69, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/OY_fz16lPvE/pics/OY_fz16lPvE5673690.jpg'}], 'start': 4897.848, 'title': 'Surveillance systems', 'summary': 'Provides an overview of analog and digital surveillance systems. it covers topics such as coaxial cables, limitations of dvd quality, trade-offs between pc-based and appliance-based dvr systems, ip cameras, frame rates, camera types, networking considerations, client expectations, bandwidth management, and legal considerations. it also mentions upcoming classes on ip cameras, analog systems, and system spec.', 'chapters': [{'end': 4968.114, 'start': 4897.848, 'title': 'Analog surveillance systems overview', 'summary': 'Discusses analog surveillance systems, highlighting the use of coaxial cables, the limitations of dvd quality, and the trade-offs between pc-based and appliance-based dvr systems.', 'duration': 70.266, 'highlights': ['Analog systems use coax cables and provide DVD quality, which is considered relatively poor.', 'Analog surveillance systems can be PC-based or appliance-based, with the latter being significantly less expensive but with limited options for part replacement.', 'PC-based systems offer more flexibility but may be more expensive than appliance-based systems.']}, {'end': 5752.121, 'start': 4968.494, 'title': 'Digital surveillance systems overview', 'summary': 'Covers various aspects of digital surveillance systems, including ip cameras, frame rates, camera types, networking considerations, and client expectations, emphasizing the need for understanding client expectations and the importance of buying high-quality equipment. it also highlights the need for managing bandwidth usage and legal considerations. the chapter also mentions upcoming classes on ip cameras, analog systems, and system spec.', 'duration': 783.627, 'highlights': ['The chapter covers various aspects of digital surveillance systems, including IP cameras, frame rates, camera types, networking considerations, and client expectations, emphasizing the need for understanding client expectations and the importance of buying high-quality equipment. IP cameras, frame rates, camera types, networking considerations, client expectations, importance of high-quality equipment', 'The chapter also highlights the need for managing bandwidth usage and legal considerations. bandwidth management, legal considerations', 'Mentions upcoming classes on IP cameras, analog systems, and system spec. upcoming classes, IP cameras, analog systems, system spec']}], 'duration': 854.273, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/OY_fz16lPvE/pics/OY_fz16lPvE4897848.jpg', 'highlights': ['Analog systems use coax cables and provide DVD quality, which is considered relatively poor.', 'Analog surveillance systems can be PC-based or appliance-based, with the latter being significantly less expensive but with limited options for part replacement.', 'PC-based systems offer more flexibility but may be more expensive than appliance-based systems.', 'The chapter covers various aspects of digital surveillance systems, including IP cameras, frame rates, camera types, networking considerations, and client expectations, emphasizing the need for understanding client expectations and the importance of buying high-quality equipment.', 'The chapter also highlights the need for managing bandwidth usage and legal considerations.', 'Mentions upcoming classes on IP cameras, analog systems, and system spec.']}], 'highlights': ['Installing digital surveillance systems can generate $500 to $1,000 profit per camera, with potential to earn $1,000 an hour.', 'IP cameras have intelligence and recording capabilities, with a five-megapixel camera recording in high definition.', 'Analog systems, while older, are known for their reliability, as any issues with the DVR can typically be fixed, ensuring continued functionality and potential cost savings.', '30 frames per second is actual real time. This means the camera or system is viewable or recordable in real time.', 'IP systems allow for the use of existing network infrastructure, enabling efficient placement of cameras without the need for extensive cabling, leading to cost and time savings.', 'Vandal proof domes are crucial for security cameras, but proper mounting is essential to prevent tampering.', 'Ensuring a minimum upload speed of 2 megabits per second is crucial for offsite viewing to avoid overwhelming the internet connection.', "In Maryland, both parties need mutual consent for audio recording, while in Virginia, only one party's consent is required, impacting the legality of recording conversations (e.g., for businesses like gas stations).", 'The importance of buying high-quality surveillance equipment is emphasized, as using low-quality equipment may lead to frequent replacements and increased labor costs, illustrated by the example of a partner having to replace 8 out of 16 $20 cameras.', 'Analog systems use coax cables and provide DVD quality, which is considered relatively poor.']}