[FFmpeg-trac] #828(undetermined:new): Processing DV gives no output -- AC EOB marker is absent?

FFmpeg trac at avcodec.org
Sun Dec 25 02:12:20 CET 2011


#828: Processing DV gives no output -- AC EOB marker is absent?
-------------------------------------+-------------------------------------
             Reporter:  rrauenza     |                    Owner:
                 Type:  defect       |                   Status:  new
             Priority:  normal       |                Component:
              Version:  unspecified  |  undetermined
             Keywords:               |               Resolution:
             Blocking:               |               Blocked By:
Analyzed by developer:  0            |  Reproduced by developer:  0
-------------------------------------+-------------------------------------

Comment (by cehoyos):

 Since it works fine here:

 Is the problem only reproducible when also encoding audio or also with
 -an?
 Is the problem only reproducible using an external library (libx264) or
 also when using -qscale 2 -vcodec mpeg4?

 {{{
 $ ffmpeg -i foo.2mb.dv -an out.avi
 ffmpeg version N-36163-g5257743, Copyright (c) 2000-2011 the FFmpeg
 developers
   built on Dec 25 2011 01:39:23 with gcc 4.3.2 [gcc-4_3-branch revision
 141291]
   configuration:
   libavutil      51. 32.100 / 51. 32.100
   libavcodec     53. 47.100 / 53. 47.100
   libavformat    53. 28.100 / 53. 28.100
   libavdevice    53.  4.100 / 53.  4.100
   libavfilter     2. 53.100 /  2. 53.100
   libswscale      2.  1.100 /  2.  1.100
   libswresample   0.  5.100 /  0.  5.100
 [dv @ 0x8e4faa0] Estimating duration from bitrate, this may be inaccurate
 Input #0, dv, from 'foo.2mb.dv':
   Duration: 00:00:00.58, start: 0.000000, bitrate: 28770 kb/s
     Stream #0:0: Video: dvvideo, yuv411p, 720x480, 28771 kb/s, SAR 8:9 DAR
 4:3, 29.97 tbr, 29.97 tbn, 29.97 tbc
     Stream #0:1: Audio: pcm_s16le, 48000 Hz, 2 channels, s16, 1536 kb/s
 Incompatible pixel format 'yuv411p' for codec 'mpeg4', auto-selecting
 format 'yuv420p'
 [buffer @ 0x8e562a0] w:720 h:480 pixfmt:yuv411p tb:1/1000000 sar:8/9
 sws_param:
 [buffersink @ 0x8e65a00] auto-inserting filter 'auto-inserted scale 0'
 between the filter 'src' and the filter 'out'
 [scale @ 0x8e54f20] w:720 h:480 fmt:yuv411p -> w:720 h:480 fmt:yuv420p
 flags:0x4
 Output #0, avi, to 'out.avi':
   Metadata:
     ISFT            : Lavf53.28.100
     Stream #0:0: Video: mpeg4 (FMP4 / 0x34504D46), yuv420p, 720x480 [SAR
 8:9 DAR 4:3], q=2-31, 200 kb/s, 29.97 tbn, 29.97 tbc
 Stream mapping:
   Stream #0:0 -> #0:0 (dvvideo -> mpeg4)
 Press [q] to stop, [?] for help
 frame=   18 fps=  0 q=20.6 Lsize=     170kB time=00:00:00.60
 bitrate=2319.7kbits/s
 video:164kB audio:0kB global headers:0kB muxing overhead 3.691619%
 }}}
 out.avi looks fine.

-- 
Ticket URL: <http://www.avcodec.org/trac/ffmpeg/ticket/828#comment:2>
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