[FFmpeg-trac] #6717(undetermined:new): h264 - gray chroma - error while decoding - left block unavailable

[FFmpeg]

#6717: h264 - gray chroma - error while decoding - left block unavailable
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             Reporter:  latot        |                    Owner:
                 Type:  defect       |                   Status:  new
             Priority:  normal       |                Component:
              Version:  unspecified  |  undetermined
             Keywords:               |               Resolution:
             Blocking:               |               Blocked By:
Analyzed by developer:  0            |  Reproduced by developer:  0
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Comment (by cehoyos):

 Replying to [comment:11 KTSamy]:
 > Replying to [comment:9 cehoyos]:
 > > Can you explain how exactly you produced the broken files?
 > Just encode a video with ffmpeg that's build with old x264 versions.
 > As of now all latest ffmpeg builds (both stable & git) at
 [https://evermeet.cx/ffmpeg/] has issues.
 >
 > you can just reproduce a similar file with the following command
 >
 > {{{
 > ffmpeg -i input.ext -c:v libx264 -profile high444 -pix_fmt yuv444p -an
 out.ext
 > }}}
 (This command line does not work.)
 Did you test this yourself or are you speculating - the reason I ask is
 that so far, nobody could explain how to produce such a file: Don't you
 agree that it most likely isn't so easy?

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Ticket URL: <https://trac.ffmpeg.org/ticket/6717#comment:12>
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