[FFmpeg-trac] #2526(undetermined:new): ffmpeg on windows crashes when using Avisynth 2.5.8

FFmpeg trac at avcodec.org
Sat Jun 1 06:38:04 CEST 2013


#2526: ffmpeg on windows crashes when using Avisynth 2.5.8
-------------------------------------+-------------------------------------
             Reporter:  Zarxrax      |                    Owner:
                 Type:  defect       |                   Status:  new
             Priority:  important    |                Component:
              Version:  unspecified  |  undetermined
             Keywords:  regression   |               Resolution:
             Blocking:               |               Blocked By:
Analyzed by developer:  0            |  Reproduced by developer:  0
-------------------------------------+-------------------------------------

Comment (by qyot27):

 I've been trying to get to the bottom of this, but I'm not getting
 anywhere.  The crash happens in DllMain whenever a source filter
 (AVISource, DirectShowSource, FFMS2, etc.) is used, but the reason why it
 only affects 2.5.8 is a mystery to me.

 Based on the observation that x264 can handle 2.5.8 without issue, and
 that it's been using dynamic loading for AviSynth since November 2009, I
 tried to shuffle things around in libavformat/avisynth.c to more closely
 match how x264's input/avs.c is organized, but it just ends in segfaults
 (what I managed to do is in the 'avsfix' branch on Github:
 https://github.com/qyot27/FFmpeg/commits/avsfix).

-- 
Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/2526#comment:2>
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