[FFmpeg-trac] #1862(avcodec:new): Wrong bit rate in MPEG2 video file

FFmpeg trac at avcodec.org
Mon Oct 29 13:28:36 CET 2012


#1862: Wrong bit rate in MPEG2 video file
-------------------------------------+-----------------------------------
             Reporter:  Heesuk Jung  |                    Owner:
                 Type:  defect       |                   Status:  new
             Priority:  normal       |                Component:  avcodec
              Version:  git-master   |               Resolution:
             Keywords:  mpeg2video   |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
-------------------------------------+-----------------------------------

Comment (by Heesuk Jung):

 ffmpeg get 104875kbps fro C069_xxx.mov.
 But bit rate of MPEG2 Video is up to 80 Mbps in case 1920x1080 resoution.

 {{{
 hsjung at ubuntu:~/work/ffmpeg-master$ ./ffmpeg -i
 ~/Downloads/C069_MOV_MPEG2\[Main at Main@787Kbps at QCIF@23.976fps\]_MP3\[128Kbps at 44.1kHz@2ch\].mov
 ffmpeg version N-35594-g7d1e003 Copyright (c) 2000-2012 the FFmpeg
 developers
   built on Oct 29 2012 05:20:14 with gcc 4.6 (Ubuntu/Linaro
 4.6.3-1ubuntu5)
   configuration: --enable-gpl --enable-libfaac --enable-libfdk-aac
 --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb
 --enable-librtmp --enable-libtheora --enable-libvorbis --enable-libvpx
 --enable-x11grab --enable-libx264 --enable-nonfree --enable-version3
   libavutil      52.  1.100 / 52.  1.100
   libavcodec     54. 69.100 / 54. 69.100
   libavformat    54. 35.100 / 54. 35.100
   libavdevice    54.  3.100 / 54.  3.100
   libavfilter     3. 20.106 /  3. 20.106
   libswscale      2.  1.101 /  2.  1.101
   libswresample   0. 16.100 /  0. 16.100
   libpostproc    52.  1.100 / 52.  1.100
 [mpegts @ 0x250f260] max_analyze_duration 5000000 reached at 5004000
 Input #0, mpegts, from
 '/home/hsjung/Downloads/C069_MOV_MPEG2[Main at Main@787Kbps at QCIF@23.976fps]_MP3[128Kbps at 44.1kHz@2ch].mov':
   Duration: 00:00:28.70, start: 1.400000, bitrate: 964 kb/s
   Program 1
     Metadata:
       service_name    : Service01
       service_provider: FFmpeg
     Stream #0:0[0x100]: Video: mpeg2video (Main) ([2][0][0][0] / 0x0002),
 yuv420p, 176x144 [SAR 1:1 DAR 11:9], 104857 kb/s, 23.98 fps, 23.98 tbr,
 90k tbn, 47.95 tbc
     Stream #0:1[0x101]: Audio: mp3 ([3][0][0][0] / 0x0003), 44100 Hz,
 stereo, s16, 128 kb/s
 At least one output file must be specified
 hsjung at ubuntu:~/work/ffmpeg-master$
 }}}

-- 
Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/1862#comment:3>
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