[FFmpeg-trac] #1182(undetermined:open): [ac3] frame sync error

FFmpeg trac at avcodec.org
Sun Jul 6 20:38:01 CEST 2014

#1182: [ac3] frame sync error
             Reporter:  carlrosmann  |                    Owner:
                 Type:  defect       |                   Status:  open
             Priority:  minor        |                Component:
              Version:  git-master   |  undetermined
             Keywords:               |               Resolution:
             Blocking:               |               Blocked By:
Analyzed by developer:  0            |  Reproduced by developer:  1

Comment (by gjdfgh):

 This also happens when seeking in the raw mpeg stream of commercial DVDs
 (or at least one DVD). After printing this error, the decoder returns an
 error. This is pretty bad for me, because I think this causes a slight

 Looking at the code, I guess it simply fails with AAC_AC3_PARSE_ERROR_SYNC
 internally. This error also happens when seeking with libdvdread or
 libdvdnav (in which case seeking with libavformat is not involved at all).
 This means it fails with the same error in both cases. I'm not sure what
 to make out of it.

 I uploaded a sample named "dvdsample" using
 http://upload.ffmpeg.org/upload/, but I'm not really sure where the upload
 form put it. (Maybe failed?)

Ticket URL: <https://trac.ffmpeg.org/ticket/1182#comment:2>
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