[FFmpeg-trac] #1502(avcodec:new): vc1 decoding regression

FFmpeg trac at avcodec.org
Tue Jul 3 19:09:27 CEST 2012

#1502: vc1 decoding regression
             Reporter:  cehoyos      |                    Owner:
                 Type:  defect       |                   Status:  new
             Priority:  important    |                Component:  avcodec
              Version:  git-master   |               Resolution:
             Keywords:  vc1          |               Blocked By:
  regression                         |  Reproduced by developer:  0
             Blocking:               |
Analyzed by developer:  0            |

Comment (by reimar):

 I was not able to verify the output (AMD broke their Linux drivers again).
 The problem with the file is that the stream starts with a header that
 seems valid that specifies 7710x7746 as the resolution.
 Any later headers do not specify a resolution, so it does not fix itself.
 This is why it plays with -ss: seeking skips that header with the bad
 Do any other players play this file?
 Ignoring resolution changes for files in wmv would be possible, but quite
 a hack.
 A bitstream filter to discard those 0x10e headers would be possible, too I
 But none seem like a really good solution.

Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/1502#comment:3>
FFmpeg <http://ffmpeg.org>
FFmpeg issue tracker

More information about the FFmpeg-trac mailing list