Caused by change in `AVCodecID` enum. Our `IMB_Ffmpeg_Codec_ID` enum,
which was stored in .blend file did match `AVCodecID`. But after change
in external library headers it fails to initialize correct codec.
Function `MOV_av_codec_id_get()` was added to map these 2 enums and
the values are no longer hard coded.
Functions, that accepted `int codec_id` argument were modified to accept
`IMB_Ffmpeg_Codec_ID` or `AVCodecID` types.
Because `codec_id` was still stored as integer in DNA, get/set struct functions
were added. This way, compiler always knows what type is used and emit
error/warning when incompatible types are used.
Unfortunately, there is no way to ensure, that DNA `codec_id` field is not
accessed directly in future code other than comment.
Pull Request: https://projects.blender.org/blender/blender/pulls/140745
62e25e315a