[FFmpeg-trac] #2700(undetermined:new): Stream mapping not predictable when using -ss option
FFmpeg
trac at avcodec.org
Mon Jun 24 09:12:13 CEST 2013
#2700: Stream mapping not predictable when using -ss option
-------------------------------------+-------------------------------------
Reporter: | Owner:
claudelepoisson | Status: new
Type: defect | Component:
Priority: normal | undetermined
Version: git-master | Resolution:
Keywords: mpegps | Blocked By:
Blocking: | Reproduced by developer: 0
Analyzed by developer: 0 |
-------------------------------------+-------------------------------------
Comment (by cehoyos):
{{{
$ ffmpeg -i fate-suite/svq3/Vertical400kbit.sorenson3.mov -qscale 15 -t 3
out.mpg
}}}
{{{
$ ffmpeg -i out.mpg -acodec copy -vcodec copy -t 1 -ss 2 av.mpg
ffmpeg version N-54166-g5dba888 Copyright (c) 2000-2013 the FFmpeg
developers
built on Jun 24 2013 08:54:40 with gcc 4.7 (SUSE Linux)
configuration: --enable-gpl --disable-indev=jack
libavutil 52. 37.101 / 52. 37.101
libavcodec 55. 16.100 / 55. 16.100
libavformat 55. 9.100 / 55. 9.100
libavdevice 55. 2.100 / 55. 2.100
libavfilter 3. 77.101 / 3. 77.101
libswscale 2. 3.100 / 2. 3.100
libswresample 0. 17.102 / 0. 17.102
libpostproc 52. 3.100 / 52. 3.100
Input #0, mpeg, from 'out.mpg':
Duration: 00:00:02.98, start: 0.522422, bitrate: 297 kb/s
Stream #0:0[0x1e0]: Video: mpeg1video, yuv420p, 320x240 [SAR 1:1 DAR
4:3], 104857 kb/s, 30 fps, 30 tbr, 90k tbn, 30 tbc
Stream #0:1[0x1c0]: Audio: mp2, 44100 Hz, mono, s16p, 128 kb/s
Output #0, mpeg, to 'av.mpg':
Metadata:
encoder : Lavf55.9.100
Stream #0:0: Video: mpeg1video, yuv420p, 320x240 [SAR 1:1 DAR 4:3],
q=2-31, 104857 kb/s, 30 fps, 90k tbn, 30 tbc
Stream #0:1: Audio: mp2, 44100 Hz, mono, 128 kb/s
Stream mapping:
Stream #0:0 -> #0:0 (copy)
Stream #0:1 -> #0:1 (copy)
Press [q] to stop, [?] for help
frame= 18 fps=0.0 q=-1.0 Lsize= 34kB time=00:00:01.00 bitrate=
277.4kbits/s
video:17kB audio:16kB subtitle:0 global headers:0kB muxing overhead
3.637554%
}}}
{{{
$ ffmpeg -i out.mpg -acodec copy -vcodec copy -t 1 -ss 1 va.mpg
ffmpeg version N-54166-g5dba888 Copyright (c) 2000-2013 the FFmpeg
developers
built on Jun 24 2013 08:54:40 with gcc 4.7 (SUSE Linux)
configuration: --enable-gpl --disable-indev=jack
libavutil 52. 37.101 / 52. 37.101
libavcodec 55. 16.100 / 55. 16.100
libavformat 55. 9.100 / 55. 9.100
libavdevice 55. 2.100 / 55. 2.100
libavfilter 3. 77.101 / 3. 77.101
libswscale 2. 3.100 / 2. 3.100
libswresample 0. 17.102 / 0. 17.102
libpostproc 52. 3.100 / 52. 3.100
Input #0, mpeg, from 'out.mpg':
Duration: 00:00:02.98, start: 0.522422, bitrate: 297 kb/s
Stream #0:0[0x1e0]: Video: mpeg1video, yuv420p, 320x240 [SAR 1:1 DAR
4:3], 104857 kb/s, 30 fps, 30 tbr, 90k tbn, 30 tbc
Stream #0:1[0x1c0]: Audio: mp2, 44100 Hz, mono, s16p, 128 kb/s
Output #0, mpeg, to 'va.mpg':
Metadata:
encoder : Lavf55.9.100
Stream #0:0: Video: mpeg1video, yuv420p, 320x240 [SAR 1:1 DAR 4:3],
q=2-31, 104857 kb/s, 30 fps, 90k tbn, 30 tbc
Stream #0:1: Audio: mp2, 44100 Hz, mono, 128 kb/s
Stream mapping:
Stream #0:0 -> #0:0 (copy)
Stream #0:1 -> #0:1 (copy)
Press [q] to stop, [?] for help
frame= 25 fps=0.0 q=-1.0 Lsize= 34kB time=00:00:01.01 bitrate=
275.4kbits/s
video:17kB audio:16kB subtitle:0 global headers:0kB muxing overhead
5.570211%
}}}
{{{
$ ffmpeg -i av.mpg -i va.mpg
ffmpeg version N-54166-g5dba888 Copyright (c) 2000-2013 the FFmpeg
developers
built on Jun 24 2013 08:54:40 with gcc 4.7 (SUSE Linux)
configuration: --enable-gpl --disable-indev=jack
libavutil 52. 37.101 / 52. 37.101
libavcodec 55. 16.100 / 55. 16.100
libavformat 55. 9.100 / 55. 9.100
libavdevice 55. 2.100 / 55. 2.100
libavfilter 3. 77.101 / 3. 77.101
libswscale 2. 3.100 / 2. 3.100
libswresample 0. 17.102 / 0. 17.102
libpostproc 52. 3.100 / 52. 3.100
Input #0, mpeg, from 'av.mpg':
Duration: 00:00:00.89, start: 0.500000, bitrate: 313 kb/s
Stream #0:0[0x1c0]: Audio: mp2, 44100 Hz, mono, s16p, 128 kb/s
Stream #0:1[0x1e0]: Video: mpeg1video, yuv420p, 320x240 [SAR 1:1 DAR
4:3], 104857 kb/s, 30 fps, 30 tbr, 90k tbn, 30 tbc
Input #1, mpeg, from 'va.mpg':
Duration: 00:00:00.99, start: 0.500000, bitrate: 280 kb/s
Stream #1:0[0x1e0]: Video: mpeg1video, yuv420p, 320x240 [SAR 1:1 DAR
4:3], 104857 kb/s, 30 fps, 30 tbr, 90k tbn, 30 tbc
Stream #1:1[0x1c0]: Audio: mp2, 44100 Hz, mono, s16p, 128 kb/s
At least one output file must be specified
}}}
--
Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/2700#comment:2>
FFmpeg <http://ffmpeg.org>
FFmpeg issue tracker
More information about the FFmpeg-trac
mailing list