[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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