[FFmpeg-trac] #977(ffmpeg:open): stream copy duration does not match the one specified by -t when -ss is used
FFmpeg
trac at avcodec.org
Sun Nov 22 12:56:39 CET 2015
#977: stream copy duration does not match the one specified by -t when -ss is
used
--------------------------------------+----------------------------------
Reporter: overclokkato | Owner:
Type: defect | Status: open
Priority: normal | Component: ffmpeg
Version: git-master | Resolution:
Keywords: | Blocked By:
Blocking: | Reproduced by developer: 1
Analyzed by developer: 0 |
--------------------------------------+----------------------------------
Comment (by LiuYan):
I have a similar issue, I don't know if they are same bug:
I want to strip only audio from a video file, so I issued
{{{
ffmpeg -report -y -ss '00:05:52.5' -t '30.1' -i '犯罪心理
.Criminal.Minds.S11E01.中英字幕.HDTVrip.1024X576.mp4' -vn -c:a copy
'CriminalMinds-start.m4a'
}}}
The expected duration of output audio file is 30.1 seconds, but the real
duration of output file is 06:22.60
{{{
size= 6058kB time=00:06:22.60 bitrate= 129.7kbits/s
}}}
'''It looks like the actual duration of output file is ${start position in
time lengty}(-ss) + ${duration}(-t)'''
--
Ticket URL: <https://trac.ffmpeg.org/ticket/977#comment:8>
FFmpeg <https://ffmpeg.org>
FFmpeg issue tracker
More information about the FFmpeg-trac
mailing list