[FFmpeg-trac] #2347(avcodec:closed): Recent builds regression bug - KO from 12th Feb 2013 - OK before

[FFmpeg]

#2347: Recent builds regression bug  - KO from 12th Feb 2013 - OK before
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             Reporter:  feelart     |                    Owner:
                 Type:  defect      |                   Status:  closed
             Priority:  normal      |                Component:  avcodec
              Version:  git-master  |               Resolution:  invalid
             Keywords:  libx264     |               Blocked By:
             Blocking:              |  Reproduced by developer:  0
Analyzed by developer:  0           |
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Comment (by cehoyos):

 Replying to [comment:12 feelart]:
 > If you're quote "If you know in advance that quality does not matter or
 if you know in advance that you must play your output file with software
 that does not support anything else but yuv420p, then please add -pix_fmt
 yuv420p to your command line." would be valid then MD5 signature for
 FFmpeg ante 9th Feb would all be the same and would be the same as results
 with ffmpeg-20130209 with -pix_fmt yuv420p, but they are not.

 The reason is a change in cf8d9b7
 Please test the following command lines with your "20130209-git-969039e"
 version to see that this commit did not introduce a bug but actually fixed
 one by changing an erratic and difficult to describe behaviour:
 $ ffmpeg -i Masque16_9.png -pix_fmt rgb24 out.png
 $ ffmpeg -loop 1 -i out.png -vcodec libx264 -t 4 -r 25 out.mp4
 (The command "works" with your rgba sample, but produces yuv444p output
 for rgb24 input: This was imo inconsistent behaviour that was fixed in
 cf8d9b7.)

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Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/2347#comment:13>
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