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  2. Closed-circuit television - Wikipedia

    en.wikipedia.org/wiki/Closed-circuit_television

    IP cameras are considered part of the Internet of things and have many of the same benefits and security risks as other IP-enabled devices. [159] Smart doorbells are one example of a type of CCTV that uses IP to allow it to send alerts. Main types of IP cameras include fixed cameras, pan–tilt–zoom (PTZ) cameras, and multi-sensor cameras. [160]

  3. Closed-circuit television camera - Wikipedia

    en.wikipedia.org/wiki/Closed-circuit_television...

    These cameras do not require a video capture card because they work using a digital signal which can be saved directly to a computer. The signal is compressed 5:1, but DVD quality can be achieved with more compression (MPEG-2 is standard for DVD-video, and has a higher compression ratio than 5:1, with a slightly lower video quality than 5:1 at best, and is adjustable for the amount of space to ...

  4. List of large sensor interchangeable-lens video cameras

    en.wikipedia.org/wiki/List_of_large_sensor...

    Camera Sensor size Crop factor [1] Lens Mount [2] Recording media [3] Codec Maximum video resolution ISO range Dynamic range (at native/peak ISO) Shutter type Anamorphic shooting Internal filters Frame rate(s −1) Arri: Alexa [4] Alexa Plus 23.76 x 13.37 mm 1.52 Arri PL: SxS card, T-link recorder (optional XR module upgrade) [5]

  5. Wireless security camera - Wikipedia

    en.wikipedia.org/wiki/Wireless_security_camera

    Analog wireless is found in three frequencies: 900 MHz, 2.4 GHz, and 5.8 GHz. Currently, the majority of wireless security cameras operate on the 2.4 GHz frequency. Most household routers, cordless phones, video game controllers, and microwaves operate on the 2.4 GHz frequency and may cause interference with a wireless security camera.

  6. Video camera - Wikipedia

    en.wikipedia.org/wiki/Video_camera

    Webcams are video cameras that stream a live video feed to a computer. Many smartphones have built-in video cameras and even high-end smartphones can capture video in 4K resolution. Special camera systems are used for scientific research, e.g. on board a satellite or a space probe, in artificial intelligence and robotics research, and in ...

  7. Webcam - Wikipedia

    en.wikipedia.org/wiki/Webcam

    A webcam is a video camera which is designed to record or stream to a computer or computer network. They are primarily used in video telephony , live streaming and social media , and security . Webcams can be built-in computer hardware or peripheral devices , and are commonly connected to a device using USB or wireless protocol .