[FFmpeg-trac] #5451(avcodec:new): Chromium: VP8 WebM broken after "replace AVStream.codec with AVStream.codecpar"

[FFmpeg]

#5451: Chromium: VP8 WebM broken after "replace AVStream.codec with
AVStream.codecpar"
-------------------------------------+-------------------------------------
             Reporter:  misc         |                    Owner:
                 Type:  defect       |                   Status:  new
             Priority:  important    |                Component:  avcodec
              Version:  git-master   |               Resolution:
             Keywords:               |               Blocked By:  codecpar
             Blocking:               |  regression
Analyzed by developer:  0            |  Reproduced by developer:  0
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Comment (by heleppkes):

 Looks like this happens because Chromium relies on coded_width/height
 being set, which is technically wrong, and a piece of information that
 AVCodecParameters will also no longer provide.

 Nevertheless, we could export coded_width/height again in the deprecated
 compat code to avoid apps breaking from this, as long as st->codec is not
 removed yet.

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Ticket URL: <https://trac.ffmpeg.org/ticket/5451#comment:3>
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