-loglevel debug

?

and post full output here.

Then we can set same loglevel in bin/ffmpeg/encode.opts

so we hopefully will spot difference in parameters send down to line ...

then we can try to make ffmpeg fail by adding say -profile=main to ffmpeg's command line and see more detailed error

then hopefully we can tweak qsv_av1 profile back into usability.

Repeat for vp9/h264.