[FFmpeg-trac] #385(undetermined:new): Freeze during x264 transcoding

[FFmpeg]

#385: Freeze during x264 transcoding
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 Reporter:  kef           |        Type:  defect
   Status:  new           |    Priority:  normal
Component:  undetermined  |     Version:  0.8.1
 Keywords:                |  Blocked By:
 Blocking:                |  Reproduced:  0
 Analyzed:  0             |
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 Hello,

 Recently ffmpeg freeze everytime I try to transcode an MP4 recorded by
 wirecast. I don't know if it's come from a wirecast update or a ffmpeg
 modification.
 The MP4 play well with VLC/MPlayer but freeze when I try to transcode it.
 To be sure I update to the lastest version of x264 and ffmpeg, it's work
 well with other videos, but specificaly with this one, it's still
 freezing.

 My transcoding command was complex at the beginning but I get exactly the
 same phenomenom with something simple like :
 {{{ffmpeg -i input.mp4 -sameq -an output.mp4}}}

 And everything seems normal in the result :
 {{{ffmpeg version N-31775-g640a905, Copyright (c) 2000-2011 the FFmpeg
 developers
 Built on Aug  8 2011 12:21:40 with gcc 4.3.2
   libavutil    51. 11. 1 / 51. 11. 1
   libavcodec   53.  9. 1 / 53.  9. 1
   libavformat  53.  6. 0 / 53.  6. 0
   libavdevice  53.  2. 0 / 53.  2. 0
   libavfilter   2. 28. 1 /  2. 28. 1
   libswscale    2.  0. 0 /  2.  0. 0
   libpostproc  51.  2. 0 / 51.  2. 0

 Seems stream 0 codec frame rate differs from container frame rate: 50.00
 (50/1) -> 25.00 (50/2)
 Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'test.mp4':
   Metadata:
     major_brand     : f4v
     minor_version   : 0
     compatible_brands: isommp42m4v
     creation_time   : 2011-08-08 15:09:50
   Duration: 00:00:21.38, start: 0.000000, bitrate: 697 kb/s
     Stream #0.0(eng): Video: h264 (Main), yuv420p, 960x540 [SAR 1:1 DAR
 16:9], 598 kb/s, 24.94 fps, 25 tbr, 90k tbn, 50 tbc
     Metadata:
       creation_time   : 2011-08-08 15:09:50
     Stream #0.1(eng): Audio: aac, 44100 Hz, stereo, s16, 93 kb/s
     Metadata:
       creation_time   : 2011-08-08 15:09:50
 [buffer @ 0xa4724e0] w:960 h:540 pixfmt:yuv420p tb:1/1000000 sar:1/1
 sws_param:
 [mpeg4 @ 0xa46bce0] removing common factors from framerate
 Output #0, mp4, to 'test-output.mp4':
   Metadata:
     major_brand     : f4v
     minor_version   : 0
     compatible_brands: isommp42m4v
     creation_time   : 2011-08-08 15:09:50
     encoder         : Lavf53.6.0
     Stream #0.0(eng): Video: mpeg4, yuv420p, 960x540 [SAR 1:1 DAR 16:9],
 q=2-31, 200 kb/s, 25 tbn, 25 tbc
     Metadata:
       creation_time   : 2011-08-08 15:09:50
 Stream mapping:
   Stream #0.0 -> #0.0
 Press [q] to stop, [?] for help}}}

-- 
Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/385>
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