[FFmpeg-trac] #4777(ffmpeg:new): FFMPEG Malloc crash, all versions OS X, lnx, windows

[FFmpeg]

#4777: FFMPEG Malloc crash, all versions OS X,lnx, windows
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             Reporter:  tommes  |                     Type:  defect
               Status:  new     |                 Priority:  normal
            Component:  ffmpeg  |                  Version:  git-master
             Keywords:          |               Blocked By:
             Blocking:          |  Reproduced by developer:  1
Analyzed by developer:  0       |
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 Summary of the bug:
 How to reproduce:
 {{{
 % There are two steps required to produce the crash with ffconcat in use.

 Step1:
 ./ffmpeg -i anyMpeg4Movie.mp4 -an -f segment -segment_list_type ffconcat
 -segment_list out.txt -vcodec copy -reset_timestamps 1 -map 0:0 seg%1d.mp4

 Step2:
 ./ffmpeg -isync -i out.txt -s 640x480 -vcodec libx264 -preset fast -b:v
 1300k -g 25 -map 0:v -f segment -segment_list_type ffconcat -segment_list
 out2.txt newSeg%1d.mp4

 Stream mapping:
   Stream #0:0 -> #0:0 (h264 (native) -> h264 (libx264))
 Press [q] to stop, [?] for help
 ffmpeg(51439,0x7fff78860300) malloc: *** error for object 0x7fde79602d60:
 pointer being freed was not allocated
 *** set a breakpoint in malloc_error_break to debug

 ffmpeg version ffmpeg version N-74447-g767d780
 built on 16. August 2015
 }}}
 Patches should be submitted to the ffmpeg-devel mailing list and not this
 bug tracker.

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Ticket URL: <https://trac.ffmpeg.org/ticket/4777>
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