I've tried: -af sofalizer=sofa=C:\Users\User_000\Downloads\ClubFritz6.sofa:type=freq:radius=1 -af sofalizer=sofa=C:/Users/human_000/Downloads/ClubFritz6.sofa:type=freq:radius=1 -af sofalizer=sofa=\Users\User_000\Downloads\ClubFritz6.sofa:type=freq:radius=1 -af sofalizer=sofa=ClubFritz6.sofa:type=fr...

You can only use one -af.

Try this:

With latest FFmpeg I can do this:

I guess you need hidepth h264 build linked with ffmpeg.
Otherwise you are forced to pipe to 10bit x264 binary.

Also trying to download your XMA converter I get report from google its infected by virus.

Please go away.

Is there documentation of format for over 30000 files you have?
What exact steps you do?
I can add support for such files if I know some basic info like:
Where one can gather sample rate, number of channels and others?

FFmpeg supports XMA2, but how it could support headerless formats like you posted. is different and off-topic problem.

Please upload/provide somehow files that do not work for you.

Your command is wrong, you need to pass full and correct path to SOFA file.