[FFmpeg-trac] #1438(avformat:open): Seeking in vob file with timestamp wrap fails
FFmpeg
trac at avcodec.org
Fri Aug 10 03:59:00 CEST 2012
#1438: Seeking in vob file with timestamp wrap fails
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Reporter: superandrzej | Owner:
Type: defect | Status: open
Priority: normal | Component: avformat
Version: git-master | Resolution:
Keywords: mpegps seek | Blocked By:
Blocking: | Reproduced by developer: 1
Analyzed by developer: 0 |
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Comment (by michael):
Replying to [comment:8 cehoyos]:
> Sample uploaded to http://samples.ffmpeg.org/ffmpeg-
bugs/trac/ticket1438/timestamp_wrap.vob
> The sample is approximately 4:21 and contains 4 timestamp wraps. The
segments are about 63, 54, 57, 66 and 21 seconds long. mplayer -demuxer
mpegps seeks fine, mplayer -demuxer lavf and ffplay seek badly.
> ffmpeg -ss 16 (and below) works approximately correct, ffmpeg -ss 17
jumps to a position 4,5 seconds before the end, -ss 22 fails accordingly.
timestamp wraps in mpeg can occur at a maximum of once every 26.5...
hours, if you have 4 in 4 minutes they are not (all) timestamp wraps.
There are 2 seperate things here
1. timestamp wraps
2. timestamp discontinuities
Please open 2 seperate tickets for these 2 seperate issues
--
Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/1438#comment:11>
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