[FFmpeg-trac] #11109(avformat:new): Matroska output format missing supported video codec tags (additional_video_tags)

[FFmpeg]

#11109: Matroska output format missing supported video codec tags
(additional_video_tags)
-----------------------------------+--------------------------------------
             Reporter:  SuRGeoNix  |                     Type:  defect
               Status:  new        |                 Priority:  normal
            Component:  avformat   |                  Version:  git-master
             Keywords:  matroska   |               Blocked By:
             Blocking:             |  Reproduced by developer:  0
Analyzed by developer:  0          |
-----------------------------------+--------------------------------------
 AVOutputFormat.codec_tag does not include ff_mkv_codec_tags

 In matroska.c there is a comment

 "If you add a tag here that is not in ff_codec_bmp_tags[] or
 ff_codec_wav_tags[], add it also to additional_audio_tags[]or
 additional_video_tags[] in matroskaenc.c"

 but additional_video_tags are not specified.

 Wondering if generally we could trust codec_tags for output formats to
 check whether is supported or not by the specified format.
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Ticket URL: <https://trac.ffmpeg.org/ticket/11109>
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