[FFmpeg-trac] #5579(avcodec:reopened): Random green block artifacts when decoding H264 streams

[FFmpeg]

#5579: Random green block artifacts when decoding H264 streams
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             Reporter:  anouar      |                    Owner:
                 Type:  defect      |                   Status:  reopened
             Priority:  normal      |                Component:  avcodec
              Version:  git-master  |               Resolution:
             Keywords:  H264        |               Blocked By:
             Blocking:              |  Reproduced by developer:  1
Analyzed by developer:  0           |
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Changes (by cehoyos):

 * reproduced:  0 => 1


Comment:

 The responsible functions are ff_h264_biweight_16_ssse3 and
 ff_h264_biweight_8_ssse3.
 Only reproducible with {{{-cpuflags mmx+ssse3}}} (which is equivalent to
 {{{-cpuflags ssse3}}}).
 Afaict:
 Only reproducible on (some?) Windows 64 systems.
 Only reproducible with a high thread count (>4?).

 Not a short-time regression, also reproducible with FFmpeg 2.1.

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Ticket URL: <https://trac.ffmpeg.org/ticket/5579#comment:8>
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