[FFmpeg-trac] #377(undetermined:new): ffmpeg reports inaccurate length of some gxf files
FFmpeg
trac at avcodec.org
Mon Aug 1 21:54:00 CEST 2011
#377: ffmpeg reports inaccurate length of some gxf files
-----------------------------------+------------------------
Reporter: acloutier | Type: defect
Status: new | Priority: important
Component: undetermined | Version: git
Keywords: gxf ffmpeg length bug | Blocked By:
Blocking: | Reproduced: 0
Analyzed: 0 |
-----------------------------------+------------------------
ffmpeg inaccurately reports the length of a good number of our gxf files.
The last known version that reported the length correctly was 0.5.2
released versions 0.6.1, 0.6.3, 0.7.1, 0.7.1-rc1, and 0.8 also have this
bug.
Example command line and output from the latest git version of ffmpeg:
{{{
ffmpeg -v 9 -loglevel 99 -i 20010920195800001.gxf
ffmpeg version N-31720-g03cbe6c, Copyright (c) 2000-2011 the FFmpeg
developers
built on Aug 1 2011 15:34:44 with gcc 4.5.2
configuration: --prefix=/usr --enable-shared --enable-libmp3lame
--enable-gpl --enable-libfaac --enable-libvorbis --enable-pthreads
--enable-libfaac --enable-libxvid --enable-x11grab --enable-libx264
--enable-libtheora --enable-nonfree --disable-stripping --enable-avfilter
--enable-libopencore-amrnb --enable-libopencore-amrwb --enable-version3
WARNING: library configuration mismatch
postproc configuration: --extra-version=4:0.6.2-1ubuntu1
--prefix=/usr --enable-avfilter --enable-avfilter-lavf --enable-vdpau
--enable-bzlib --enable-libgsm --enable-libschroedinger --enable-libspeex
--enable-libtheora --enable-libvorbis --enable-pthreads --enable-zlib
--enable-libvpx --disable-stripping --enable-runtime-cpudetect --enable-
vaapi --enable-gpl --enable-postproc --enable-swscale --enable-x11grab
--enable-libdc1394 --shlibdir=/usr/lib/i686/cmov --cpu=i686 --enable-
shared --disable-static --disable-ffmpeg --disable-ffplay
libavutil 51. 11. 1 / 51. 11. 1
libavcodec 53. 9. 0 / 53. 9. 0
libavformat 53. 6. 0 / 53. 6. 0
libavdevice 53. 2. 0 / 53. 2. 0
libavfilter 2. 27. 5 / 2. 27. 5
libswscale 2. 0. 0 / 2. 0. 0
libpostproc 51. 2. 0 / 51. 2. 0
[gxf @ 0x9f253a0] Format gxf probed with size=2048 and score=100
[mpeg2video @ 0x9f271e0] Unsupported bit depth: 0
[gxf @ 0x9f253a0] Probe buffer size limit 5000000 reached
Seems stream 0 codec frame rate differs from container frame rate: 59.94
(60000/1001) -> 59.94 (60000/1001)
Input #0, gxf, from '20010920195800001.gxf':
Duration: 01:00:55.06, start: 0.000000, bitrate: 17599 kb/s
Stream #0.0, 101, 1001/120000: Video: mpeg2video (4:2:2), yuv422p,
720x512 [SAR 128:135 DAR 4:3], 1001/60000, 10000 kb/s, 119.88 fps, 59.94
tbr, 119.88 tbn, 59.94 tbc
Stream #0.1, 5, 1001/120000: Audio: pcm_s16le, 48000 Hz, 1 channels,
s16, 768 kb/s
Stream #0.2, 5, 1001/120000: Audio: pcm_s16le, 48000 Hz, 1 channels,
s16, 768 kb/s
Stream #0.3, 1, 1001/120000: Data: [0][0][0][0] / 0x0000
At least one output file must be specified
}}}
This is the output from 0.5.2 with the correct length:
{{{
/opt/ffmpeg/0.5.2/bin/ffmpeg -v 9 -i 20010920195800001.gxf
FFmpeg version 0.5.2, Copyright (c) 2000-2009 Fabrice Bellard, et al.
configuration: --prefix=/opt/ffmpeg/0.5.2 --extra-cflags=-O3 -fPIC
-ffast-math --extra-ldflags=-O3 -fPIC -ffast-math --extra-
libs=-L/usr/local/lib -R/usr/local/lib --disable-mmx --disable-mmx2
--disable-ssse3 --enable-gpl --enable-nonfree --disable-ffserver
--disable-ffplay --disable-stripping --disable-debug --disable-ipv6
--disable-protocol=udp --disable-encoder=nellymoser --disable-network
--enable-swscale --enable-libmp3lame --enable-pthreads --enable-libfaac
--enable-libfaad --enable-libx264 --disable-vhook
libavutil 49.15. 0 / 49.15. 0
libavcodec 52.20. 1 / 52.20. 1
libavformat 52.31. 0 / 52.31. 0
libavdevice 52. 1. 0 / 52. 1. 0
libswscale 0. 7. 1 / 0. 7. 1
built on Dec 22 2010 16:30:13, gcc: 4.5.1
Seems stream 0 codec frame rate differs from container frame rate: 59.94
(60000/1001) -> 29.97 (30000/1001)
Input #0, gxf, from '/data/rawVideo/2001/09/20/20010920195800001.gxf':
Duration: 02:01:50.13, start: 0.000000, bitrate: 8799 kb/s
Stream #0.0, 1001/60000: Video: mpeg2video, yuv422p, 720x512 [PAR
128:135 DAR 4:3], 1001/60000, 10000 kb/s, 29.97 tbr, 59.94 tbn, 59.94 tbc
Stream #0.1, 1001/60000: Audio: pcm_s16le, 48000 Hz, mono, s16, 768
kb/s
Stream #0.2, 1001/60000: Audio: pcm_s16le, 48000 Hz, mono, s16, 768
kb/s
Stream #0.3, 1001/60000: Data: 0x0000
At least one output file must be specified
}}}
--
Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/377>
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