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

FFmpeg trac at avcodec.org
Sat Aug 24 11:02:39 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:18 cehoyos]:

 > aborting (without a crash as done with shorter input files with other
 presets) is much better.

 Perhaps '-preset ultrafast' handled the stats anomaly better in this
 instance, but for the sake of correctness I should point out that I've
 experienced no correlation between crashing and shorter input files.

 I first experienced crashing when encoding whole DVDs and since it's
 happened whenever these conditions have been satisfied:
 * this particular input demuxed from MPEG-type format AND
 * two-pass encoding with different output format on pass 1 and audio
 filter on pass 2 AND
 * '-preset veryslow',
 regardless of input file size.

Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/2846#comment:19>
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