VA-API device selection ignored in the config (Possible missing card selection code for VA-API) about sunshine

[gschintgen]

Thanks for the detailed report. I can confirm this issue on my desktop PC with Intel iGPU and AMD dGPU when using KMS capture. The adapter setting is ignored, which is unexpected since the documentation states: "Linux + VA-API: Unlike with amdvce and nvenc, it doesn’t matter if video encoding is done on a different GPU."

There is a PR though to implement cross-encoding on a different GPU in an efficient way: #2053.

If I switch to x11grab as capture method, cross-encoding on the iGPU (when rendering on the dGPU) is working. But those codepaths are probably quite inefficient.

As for seeing which card is actually used by libva I submitted a minor PR (#2502) to have slightly more informative output at info level.