........snip

For me it looks like nothing has changed:

localhost:/Cin # git am 0001-Experimental-try-10bit-vaapi-encoding.patch
fatal: previous rebase directory .git/rebase-apply still exists but mbox given.

remove it again?

By the way,testing

bin/cin
compression: hevc_vaapi.mp4
Pixels: vaapi (no other options)
cin_hw_dev=vaapi

Renders

Color space                              : YUV
Chroma subsampling                       : 4:2:0
Bit depth                                : 8 bits

The same with
CIN_10BIT_ENC=1  bin/cin

yeah, it does not exist in normal cin, only after you add patch.

may be just take a break from all this, I do not think we will solve this problem in few remaining days until end of October.  So ... do not rush

Ok for me.

Terje, I think if you are ok with this idea we can return to testing 10bit-vaapi patch ...

Hopefully in its final form it will just allow same format= string in encoding profiles as supported by per-file decoding opts files now ,,,