[FFmpeg-trac] #7686(avfilter:new): Wrong decision of pixel format in filtergraph

[FFmpeg]

#7686: Wrong decision of pixel format in filtergraph
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             Reporter:  mfcc64      |                    Owner:
                 Type:  defect      |                   Status:  new
             Priority:  normal      |                Component:  avfilter
              Version:  git-master  |               Resolution:
             Keywords:              |               Blocked By:
             Blocking:              |  Reproduced by developer:  0
Analyzed by developer:  0           |
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Comment (by cehoyos):

 Replying to [comment:4 mfcc64]:

 > The root cause as you stated is similar.
 I don't think they are similar: The first case seems a matter of taste, I
 don't think you were able to explain formally why one is better, the
 second case is a question of knowing what comes further down the filter-
 chain. The second case cannot be fixed in general but the specific issue
 of a filter not providing any sample format and the later ones not having
 a format in common but very similar ones maybe fixable.

 > I posted lutyuv example because I was retrying to fix
 https://ffmpeg.org/pipermail/ffmpeg-devel/2016-June/195941.html

 I believe you have to fix this in the fate subsystem, your patch seems to
 make a lot of sense (apart from the fact that you want to improve big-
 endian systems while being unable to test them).

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Ticket URL: <https://trac.ffmpeg.org/ticket/7686#comment:5>
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