By PURPLELEC | 05 January 2024 | 0 Comments
4 major factors causing image lag in video capture cards
Video capture cards often encounter freezes during use, and it is difficult for users to find the cause. Let’s take a look at the 4 major factors that cause image freezes when using video capture cards.
1. Computer configuration is too low
Whether the capture card is recording or live broadcasting, it needs to be implemented through a computer. When recording or live broadcasting software is used for encoding on the computer, the computer's hardware resources will be used. If your computer configuration is not high enough, it will cause this kind of lagging effect. Or the computer configuration is barely acceptable, but performing multiple tasks at the same time will consume too much computer resources, resulting in poor video encoding capabilities and resulting video freezes.
2. The frame rate set by the software is too low
First of all, we should know what makes a video. Video generally refers to various technologies that capture, record, process, store, transmit and reproduce a series of static images in the form of electrical signals. When the continuous image changes exceed 24 frames per second, according to the principle of persistence of vision, the human eye cannot distinguish a single static image; it looks like a smooth and continuous visual effect, and such continuous images are called videos.
Therefore, when setting the video frame rate, do not set it lower than 24 frames. Generally, it can be set to 30-60. If the frame rate is lower than 24 frames, you will feel the effect of screen lag. There are also different software with different encoding capabilities for videos. So set the frame rate and the processing power of the software to test it yourself.
3. The video source itself is lagging.
Another reason for video lag is related to the video source device itself. If the playback box plays 4k/60 frame video, and the decoding ability of the playback box is not good, it will cause video playback lag, then The video signal acquired by the video capture card must also be stuck. Therefore, in this case, you need to connect the video source to a monitor or TV to see if it can output a normal image. If it cannot output a normal image, it is a problem with the video device. If it can output a normal image, then find other reasons for the screen freeze.
4. The video cable is too long
Another situation that causes abnormal screen display is wire problems. Now it is best to choose high-quality and reliable wires. Poor quality cables are likely to cause abnormal screen display, especially if the amount of digital signal transmission is large.
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