[FFmpeg-trac] #1282(FFmpeg:new): FLV4 / VP6 Libavcodec decoding bug

[FFmpeg]

#1282: FLV4 / VP6 Libavcodec decoding bug
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             Reporter:               |                     Type:  defect
  theshadowrunner                    |                 Priority:  normal
               Status:  new          |                  Version:
            Component:  FFmpeg       |  unspecified
             Keywords:  FLV4, VP6,   |               Blocked By:
  Libacodec                          |  Reproduced by developer:  0
             Blocking:               |
Analyzed by developer:  0            |
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 Hello,
 Here's a report for a FLV4/VP6 Libavcodec decoding bug.
 A sample is here: http://videoff7.free.fr/sample_artefact.flv
 (also tentatively attached to this ticket).

 As the video progresses, PQ becomes worse and worse, it can be seen easily
 on the newscaster's face 10 seconds in.

 I tested with DShow based decoders (FFDShow/LAV) and also with mplayer2,
 all on Windows. The issue shows up with all of them.

 No such issue happens when decoding with the original On2 VP6 directshow
 decoder [ http://videoff7.free.fr/On2_VP6_Decoder.zip ].

 Thank you for your support.

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Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/1282>
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