[FFmpeg-trac] #426(avcodec:open): Clip buggy playback in ffmpeg but ok in vlc or QT

[FFmpeg]

#426: Clip buggy playback in ffmpeg but ok in vlc or QT
--------------------------------------+----------------------
Reporter:  ehsmeng                    |       Owner:
    Type:  defect                     |      Status:  open
Priority:  important                  |   Component:  avcodec
 Version:  git-master                 |  Resolution:
Keywords:  mjpeg yuvj422p regression  |  Blocked By:
Blocking:                             |  Reproduced:  1
Analyzed:  0                          |
--------------------------------------+----------------------
Changes (by cehoyos):

 * status:  new => open
 * reproduced:  0 => 1
 * component:  undetermined => avcodec
 * priority:  normal => important
 * version:  git => git-master
 * keywords:  mjpeg yuvj422p => mjpeg yuvj422p regression


Comment:

 For future bug-reports: Please always post complete, uncut output when
 transcoding!

 Related to ticket #267, regression since
 8c0fa61a9713a1306fca7997dd04d72ea1f060ea /
 7b8ed831eb8432d202dad16dedc1758b018bb1fa
 {{{
 $ ffmpeg -i 008575000_sub.mov -qscale 2 out.avi
 ffmpeg version N-32280-gd5d7de7, Copyright (c) 2000-2011 the FFmpeg
 developers
   built on Sep  1 2011 22:47:26 with gcc 4.5.3
   configuration: --cc=/usr/local/gcc-4.5.3/bin/gcc
   libavutil    51. 14. 0 / 51. 14. 0
   libavcodec   53. 12. 0 / 53. 12. 0
   libavformat  53. 10. 0 / 53. 10. 0
   libavdevice  53.  3. 0 / 53.  3. 0
   libavfilter   2. 37. 0 /  2. 37. 0
   libswscale    2.  0. 0 /  2.  0. 0

 Seems stream 0 codec frame rate differs from container frame rate: 600.00
 (600/1) -> 25.00 (25/1)
 Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '008575000_sub.mov':
   Metadata:
     major_brand     : qt
     minor_version   : 512
     compatible_brands: qt
     creation_time   : 1970-01-01 00:00:00
     encoder         : Lavf53.4.0
   Duration: 00:00:01.00, start: 0.000000, bitrate: 160370 kb/s
     Stream #0.0(eng): Video: mjpeg (jpeg / 0x6765706A), yuvj422p,
 1920x1080 [SAR 72:72 DAR 16:9], 160363 kb/s, 25 fps, 25 tbr, 600 tbn, 600
 tbc
     Metadata:
       creation_time   : 1970-01-01 00:00:00
 Incompatible pixel format 'yuvj422p' for codec 'mpeg4', auto-selecting
 format 'yuv420p'
 [buffer @ 0x1299980] w:1920 h:1080 pixfmt:yuvj422p tb:1/1000000 sar:72/72
 sws_param:
 [buffersink @ 0x129abc0] auto-inserting filter 'auto-inserted scaler 0'
 between the filter 'src' and the filter 'out'
 [scale @ 0x129ea00] w:1920 h:1080 fmt:yuvj422p -> w:1920 h:1080
 fmt:yuv420p flags:0x4
 Output #0, avi, to 'out.avi':
   Metadata:
     major_brand     : qt
     minor_version   : 512
     compatible_brands: qt
     creation_time   : 1970-01-01 00:00:00
     ISFT            : Lavf53.10.0
     Stream #0.0(eng): Video: mpeg4 (FMP4 / 0x34504D46), yuv420p, 1920x1080
 [SAR 1:1 DAR 16:9], q=2-31, 200 kb/s, 25 tbn, 25 tbc
     Metadata:
       creation_time   : 1970-01-01 00:00:00
 Stream mapping:
   Stream #0.0 -> #0.0 (mjpeg -> mpeg4)
 Press [q] to stop, [?] for help
 [mjpeg @ 0x12a2e00] error count: 75
 [mjpeg @ 0x12a2e00] error y=52 x=59
 [mjpeg @ 0x12a2e00] mjpeg_decode_dc: bad vlc: 0:0
 (0x1617c78)trate=23599.2kbits/s
 [mjpeg @ 0x12a2e00] error dc
 [mjpeg @ 0x12a2e00] error y=50 x=57
 [mjpeg @ 0x12a2e00] error count: 70
 [mjpeg @ 0x12a2e00] error y=45 x=58
 [mjpeg @ 0x12a2e00] error count: 65
 [mjpeg @ 0x12a2e00] error y=45 x=58
 [mjpeg @ 0x12a2e00] error count: 66
 [mjpeg @ 0x12a2e00] error y=45 x=58
 [mjpeg @ 0x12a2e00] error count: 65
 [mjpeg @ 0x12a2e00] error y=52 x=58
 [mjpeg @ 0x12a2e00] error count: 68
 [mjpeg @ 0x12a2e00] error y=46 x=60
 [mjpeg @ 0x12a2e00] error count: 681904kB time=00:00:00.76
 bitrate=20526.2kbits/s
 [mjpeg @ 0x12a2e00] error y=46 x=58
 [mjpeg @ 0x12a2e00] error count: 64
 [mjpeg @ 0x12a2e00] error y=46 x=58
 frame=   25 fps= 17 q=2.0 Lsize=    2580kB time=00:00:01.00
 bitrate=21131.6kbits/s
 video:2573kB audio:0kB global headers:0kB muxing overhead 0.241738%
 }}}

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Ticket URL: <https://avcodec.org/trac/ffmpeg/ticket/426#comment:2>
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