Actually this is not entirely true. On windows we use the -dxva params which let ffmpeg decide. I haven't tested but i would think it would handle automatically choosing which gpu is available.
I've had two GPUs in my server and only one ever gets used. I specifically tested this a few different times. I've since pulled the GPU to use in a different computer. Maybe I'll throw it back in and test again. BTW, same exact GPUs.
Do you remember roughly how long ago the "-dxva params" was added?
I certainly hope I'm wrong, because I'd like two GPUs in my server!
Oh BTW, for me previously it only ever ran on the "console" GPU.
Edited by cayars, 04 October 2018 - 02:21 PM.