[FFmpeg-trac] #2028(undetermined:new): No Audio in output file if -ss is specified after -i in newer builds
FFmpeg
trac at avcodec.org
Thu Dec 13 18:15:28 CET 2012
#2028: No Audio in output file if -ss is specified after -i in newer builds
-------------------------------------+-------------------------------------
Reporter: ramitbhalla | Type: defect
Status: new | Priority: important
Component: | Version:
undetermined | unspecified
Keywords: | Blocked By:
Blocking: | Reproduced by developer: 0
Analyzed by developer: 0 |
-------------------------------------+-------------------------------------
Summary of the bug: With the newer builds, some files (I've replicated
with TS and WTV so far) don't have or have corrupted audio in the output
file if the -ss is specified after -i. If it's specified before -i the
audio is fine.
The sample file is too large to upload here (that itself is cut from the
original file which is much larger).
It can be downloaded from:
http://www.mediafire.com/?phqror7mn83pdlk
How to reproduce:
WORKS:
{{{
ffmpeg -ss 30 -i test.ts -vcodec copy -acodec copy -t 15 test1.ts
ffmpeg version N-46726-g2f74f8d Copyright (c) 2000-2012 the FFmpeg
developers
built on Nov 13 2012 19:29:51 with gcc 4.7.2 (GCC)
configuration: --enable-gpl --enable-version3 --disable-pthreads
--enable-runtime-cpudetect --enable-avisynth --enable
-bzlib --enable-frei0r --enable-libass --enable-libopencore-amrnb
--enable-libopencore-amrwb --enable-libfreetype --enab
le-libgsm --enable-libmp3lame --enable-libnut --enable-libopenjpeg
--enable-libopus --enable-librtmp --enable-libschroed
inger --enable-libspeex --enable-libtheora --enable-libutvideo --enable-
libvo-aacenc --enable-libvo-amrwbenc --enable-li
bvorbis --enable-libvpx --enable-libx264 --enable-libxavs --enable-libxvid
--enable-zlib
libavutil 52. 6.100 / 52. 6.100
libavcodec 54. 71.100 / 54. 71.100
libavformat 54. 36.100 / 54. 36.100
libavdevice 54. 3.100 / 54. 3.100
libavfilter 3. 23.100 / 3. 23.100
libswscale 2. 1.102 / 2. 1.102
libswresample 0. 16.100 / 0. 16.100
libpostproc 52. 1.100 / 52. 1.100
[mpegts @ 0025afa0] max_analyze_duration 5000000 reached at 5016000
Input #0, mpegts, from 'test.ts':
Duration: 00:02:00.06, start: 1.400000, bitrate: 4219 kb/s
Program 1
Metadata:
service_name : CBBC Channel
service_provider: CBBC Channel
Stream #0:0[0x100]: Video: mpeg2video (Main) ([2][0][0][0] / 0x0002),
yuv420p, 720x576 [SAR 64:45 DAR 16:9], 25 fps,
25 tbr, 90k tbn, 50 tbc
Stream #0:1[0x101](eng): Audio: mp2 ([3][0][0][0] / 0x0003), 48000 Hz,
stereo, s16, 256 kb/s
Output #0, mpegts, to 'test1.ts':
Metadata:
encoder : Lavf54.36.100
Stream #0:0: Video: mpeg2video ([2][0][0][0] / 0x0002), yuv420p,
720x576 [SAR 64:45 DAR 16:9], q=2-31, 25 fps, 90k t
bn, 25 tbc
Stream #0:1(eng): Audio: mp2 ([3][0][0][0] / 0x0003), 48000 Hz,
stereo, 256 kb/s
Stream mapping:
Stream #0:0 -> #0:0 (copy)
Stream #0:1 -> #0:1 (copy)
Press [q] to stop, [?] for help
frame= 356 fps=0.0 q=-1.0 Lsize= 7247kB time=00:00:15.02
bitrate=3952.5kbits/s
video:6214kB audio:470kB subtitle:0 global headers:0kB muxing overhead
8.415676%
}}}
DOES NOT WORK
{{{
ffmpeg -i test.ts -vcodec copy -acodec copy -ss 30 -t 15 test1.ts
ffmpeg version N-46726-g2f74f8d Copyright (c) 2000-2012 the FFmpeg
developers
built on Nov 13 2012 19:29:51 with gcc 4.7.2 (GCC)
configuration: --enable-gpl --enable-version3 --disable-pthreads
--enable-runtime-cpudetect --enable-avisynth --enable
-bzlib --enable-frei0r --enable-libass --enable-libopencore-amrnb
--enable-libopencore-amrwb --enable-libfreetype --enab
le-libgsm --enable-libmp3lame --enable-libnut --enable-libopenjpeg
--enable-libopus --enable-librtmp --enable-libschroed
inger --enable-libspeex --enable-libtheora --enable-libutvideo --enable-
libvo-aacenc --enable-libvo-amrwbenc --enable-li
bvorbis --enable-libvpx --enable-libx264 --enable-libxavs --enable-libxvid
--enable-zlib
libavutil 52. 6.100 / 52. 6.100
libavcodec 54. 71.100 / 54. 71.100
libavformat 54. 36.100 / 54. 36.100
libavdevice 54. 3.100 / 54. 3.100
libavfilter 3. 23.100 / 3. 23.100
libswscale 2. 1.102 / 2. 1.102
libswresample 0. 16.100 / 0. 16.100
libpostproc 52. 1.100 / 52. 1.100
[mpegts @ 0221afa0] max_analyze_duration 5000000 reached at 5016000
Input #0, mpegts, from 'test.ts':
Duration: 00:02:00.06, start: 1.400000, bitrate: 4219 kb/s
Program 1
Metadata:
service_name : CBBC Channel
service_provider: CBBC Channel
Stream #0:0[0x100]: Video: mpeg2video (Main) ([2][0][0][0] / 0x0002),
yuv420p, 720x576 [SAR 64:45 DAR 16:9], 25 fps,
25 tbr, 90k tbn, 50 tbc
Stream #0:1[0x101](eng): Audio: mp2 ([3][0][0][0] / 0x0003), 48000 Hz,
stereo, s16, 256 kb/s
Output #0, mpegts, to 'test1.ts':
Metadata:
encoder : Lavf54.36.100
Stream #0:0: Video: mpeg2video ([2][0][0][0] / 0x0002), yuv420p,
720x576 [SAR 64:45 DAR 16:9], q=2-31, 25 fps, 90k t
bn, 25 tbc
Stream #0:1(eng): Audio: mp2 ([3][0][0][0] / 0x0003), 48000 Hz,
stereo, 256 kb/s
Stream mapping:
Stream #0:0 -> #0:0 (copy)
Stream #0:1 -> #0:1 (copy)
Press [q] to stop, [?] for help
frame= 356 fps=0.0 q=-1.0 Lsize= 7246kB time=00:00:45.00
bitrate=1319.1kbits/s
video:6214kB audio:469kB subtitle:0 global headers:0kB muxing overhead
8.423527%
}}}
LAST WORKING VERSION FFMPEG WITH -SS AFTER -I
{{{
ffmpeg.051112 -i test.ts -vcodec copy -acodec copy -ss 30 -t 15 test1.ts
ffmpeg version N-37915-g6cb2085 Copyright (c) 2000-2012 the FFmpeg
developers
built on Feb 15 2012 20:47:20 with gcc 4.6.2
configuration: --enable-gpl --enable-version3 --disable-w32threads
--enable-runtime-cpudetect --enable-avisynth --enab
le-bzlib --enable-frei0r --enable-libopencore-amrnb --enable-libopencore-
amrwb --enable-libfreetype --enable-libgsm --en
able-libmp3lame --enable-libopenjpeg --enable-librtmp --enable-
libschroedinger --enable-libspeex --enable-libtheora --en
able-libvo-aacenc --enable-libvo-amrwbenc --enable-libvorbis --enable-
libvpx --enable-libx264 --enable-libxavs --enable-
libxvid --enable-zlib
libavutil 51. 39.100 / 51. 39.100
libavcodec 54. 3.100 / 54. 3.100
libavformat 54. 1.100 / 54. 1.100
libavdevice 53. 4.100 / 53. 4.100
libavfilter 2. 62.100 / 2. 62.100
libswscale 2. 1.100 / 2. 1.100
libswresample 0. 6.100 / 0. 6.100
libpostproc 52. 0.100 / 52. 0.100
[mpegts @ 01CC9540] max_analyze_duration 5000000 reached at 5016000
Input #0, mpegts, from 'test.ts':
Duration: 00:02:00.06, start: 1.400000, bitrate: 4219 kb/s
Program 1
Metadata:
service_name : CBBC Channel
service_provider: CBBC Channel
Stream #0:0[0x100]: Video: mpeg2video (Main) ([2][0][0][0] / 0x0002),
yuv420p, 720x576 [SAR 64:45 DAR 16:9], 15000 k
b/s, 25 fps, 25 tbr, 90k tbn, 50 tbc
Stream #0:1[0x101](eng): Audio: mp2 ([3][0][0][0] / 0x0003), 48000 Hz,
stereo, s16, 256 kb/s
[mpegts @ 02A493A0] muxrate VBR, pcr every 2 pkts, sdt every 200, pat/pmt
every 40 pkts
Output #0, mpegts, to 'test1.ts':
Metadata:
encoder : Lavf54.1.100
Stream #0:0: Video: mpeg2video ([2][0][0][0] / 0x0002), yuv420p,
720x576 [SAR 64:45 DAR 16:9], q=2-31, 15000 kb/s, 2
5 fps, 90k tbn, 25 tbc
Stream #0:1(eng): Audio: mp2 ([3][0][0][0] / 0x0003), 48000 Hz,
stereo, 256 kb/s
Stream mapping:
Stream #0:0 -> #0:0 (copy)
Stream #0:1 -> #0:1 (copy)
Press [q] to stop, [?] for help
frame= 356 fps= 0 q=-1.0 Lsize= 7246kB time=00:00:15.00
bitrate=3957.0kbits/s
video:6214kB audio:469kB global headers:0kB muxing overhead 8.418032%
}}}
This is a regression defect
--
Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/2028>
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