[FFmpeg-trac] #2846(undetermined:new): Two-pass libx264 -preset veryslow crashes on some MPEG-type inputs

FFmpeg trac at avcodec.org
Sat Aug 24 15:27:22 CEST 2013

#2846: Two-pass libx264 -preset veryslow crashes on some MPEG-type inputs
             Reporter:               |                    Owner:
  francois.visagie@…                 |                   Status:  new
                 Type:  defect       |                Component:
             Priority:  normal       |  undetermined
              Version:  unspecified  |               Resolution:
             Keywords:  crash        |               Blocked By:
  libx264                            |  Reproduced by developer:  0
             Blocking:               |
Analyzed by developer:  0            |

Comment (by francois.visagie@…):

 Replying to [comment:20 cehoyos]:
 > > but for the sake of correctness I should point out that I've
 experienced no correlation between crashing and shorter input files.
 > I thought you reported earlier (and I could reproduce this) that you
 were unable to reproduce the crash with a shorter input file than the one
 you uploaded?

 No, that's not exactly what I'd experienced or meant. It was more a case
 of making sure the input file cut I made for testing/uploading purposes
 includes whatever content contributes to the crash - encoding the whole
 DVD only crashes at the very end of the last VOB (but too large to upload
 all), encoding individual earlier VOBs completes successfully, encoding
 only VTS_01_4.VOB crashes at the very end, and as the uploaded cut showed
 only the last part of VTS_01_4.VOB is needed to reproduce the crash.

 Although I didn't try any smaller cuts myself, if they do encode
 successfully with the initial command lines above, the possibility remains
 that such cuts then excluded whatever problem content contributed to the

Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/2846#comment:21>
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