Timo Rothenpieler 6a4d1c9063 ffmpeg: use explicitly requested hwaccel only
With there being two hwaccels that use the CUDA pix_fmt now, just
relying on the pix_fmt to identify the selected hwaccel is not enough
anymore.

So this checks if the user explicitly selected a hwaccel, and only
accepts that one.
2017-11-11 14:19:05 +01:00
..