I need to capture data from a 1280x1024 DVI output of a PC. The captured data needs to be exact. I use an AV.io 4K and found the data it captured is off slightly. My project does not allow any single bit altered. I wonder how to configure or what software to use.
Here is the setup which tell me the captured data is altered. I have a video signal generator which produce a set of greyscale tiles. Each tile has a same RGB values. The video source is verified by other capture devices to have R=G=B in every tile. However, if I use VLC with my AV.io 4K to take a snapshot, RGB values not always the same. The differences are between 0-3 out of 256 scales. How this happens? What can I do to get exact data in the video? Thank you.