The function of the live broadcast acquisition card is to facilitate the computer to recognize the output signal of the camera and ensure the clarity of the picture quality.
Video Capture card (Video Capture card), also known as video capture card, is the ana-log camera, video recorder, LD video player, TV output of the video signal output of the video data or video audio mixed data into the computer, and converted into computer recognizable digital data, stored in the computer. Becomes an editable video data file.
General HD cameras are using SDI or HDMI output, and the computer can not directly identify these signals collected by the camera, you need to convert these SDI and HDMI signals into computer-identifiable USB signals, the computer can process these signals.
Acquisition card market is generally divided into built-in card plate and external box, the built-in directly inserted into the motherboard, powered by the motherboard, need to install a driver. External plug and play, no need to install the driver, USB power supply, easy to carry, some also with HDMI ring out, easy to monitor. Resolution, it is generally recommended to use 1080P@60Hz, 60fps acquisition card, general live platform, up to support 1080P, the cost of buying 4K is high, it is not used. It is best to HDMI to USB3.0, USB3.0 can theoretically achieve a transmission speed of 5Gbps to ensure the clarity of the picture quality.
