[FFmpeg-trac] #3710(undetermined:new): Odd demuxed timestamps on ogg file.

FFmpeg trac at avcodec.org
Tue Jun 10 00:32:34 CEST 2014


#3710: Odd demuxed timestamps on ogg file.
-------------------------------------+-------------------------------------
               Reporter:             |                  Owner:
  dalecurtis                         |                 Status:  new
                   Type:  defect     |              Component:
               Priority:  normal     |  undetermined
                Version:             |               Keywords:
  unspecified                        |               Blocking:
             Blocked By:             |  Analyzed by developer:  0
Reproduced by developer:  0          |
-------------------------------------+-------------------------------------
 Using ToT, upon first pass through the following ogg file, ffmpeg returns
 the timestamps -128, -128, -448 for the first three packets in the
 following file:

 http://commondatastorage.googleapis.com/dalecurtis-shared/bear.ogv

 {{{
 $ ffprobe -show_packets bear.ogv 2>&1 | grep -4 pts= | head -n 31
 [theora @ 0x1fa9d00] 7 bits left in packet 82
 [PACKET]
 codec_type=audio
 stream_index=1
 pts=-128
 pts_time=-0.002902
 dts=-128
 dts_time=-0.002902
 duration=128
 --
 [/PACKET]
 [PACKET]
 codec_type=audio
 stream_index=1
 pts=-128
 pts_time=-0.002902
 dts=-128
 dts_time=-0.002902
 duration=128
 --
 [/PACKET]
 [PACKET]
 codec_type=audio
 stream_index=1
 pts=-448
 pts_time=-0.010159
 dts=-448
 dts_time=-0.010159
 duration=576
 --
 [/PACKET]
 }}}

 This seems incorrect for a couple reasons: duplicated and out of order.
 It's possible the file is busted, since it complains about a keyframe not
 being marked correctly, but that's on the video and these are audio
 packets.

--
Ticket URL: <https://trac.ffmpeg.org/ticket/3710>
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