#5379: -ss option does not work for stream selection
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Reporter: gdittmer | Type: defect
Status: new | Priority: normal
Component: ffmpeg | Version: unspecified
Keywords: | Blocked By:
Blocking: | Reproduced by developer: 0
Analyzed by developer: 0 |
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I am using 3.0 with
ffmpeg -ss xx -i in.mkv -c copy out.mp4
in.mkv has video, mp2 stereo and AC3 audio. AC3 is 2.0 stereo at position
0 and 5.1 surround at position xx. out.mp4 contains mp2 audio, while
documentation states that no decode happens until position xx and thus AC3
audio should be selected. Easily confirmed on any satellite TV stream.
Current workaround for desired behaviour:
ffmpeg -ss xx -i in.mkv -map 0 -c copy -f matroska pipe:1 | ffmpeg -i - -c
copy out.mp4
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Ticket URL: <https://trac.ffmpeg.org/ticket/5379>
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