[FFmpeg-trac] #1510(avformat:new): Stability issues with mpegts streams

FFmpeg trac at avcodec.org
Wed Jul 4 15:58:12 CEST 2012

#1510: Stability issues with mpegts streams
             Reporter:  mufin       |                    Owner:
                 Type:  defect      |                   Status:  new
             Priority:  normal      |                Component:  avformat
              Version:  git-master  |               Resolution:
             Keywords:  mpegts      |               Blocked By:
             Blocking:              |  Reproduced by developer:  0
Analyzed by developer:  0           |

Comment (by mufin):

 Replying to [comment:1 cehoyos]:
 > Replying to [ticket:1510 mufin]:
 > > Another one is a crash (segfault) in mp_decode_layer3 in
 mpegaudiodec.c. That is strange as such, since there is no mp3 content in
 my streams.
 > > I cannot give more detailed information since even with optimizations
 turned off and debbuging symbols turned on, the topmost stackframe looks
 > Did you try static compilation with --disable-asm --disable-yasm
 --disable-optimizations --enable-debug=3 ?
 > An alternative is to use valgrind.

 I will try static the compilation, you suggested. The problem is, that the
 solution I proposed works for me and I have only a finite amount of time
 for further experiments (reproducing the faulty behavior always takes
 quite some time).

 I already have tried valgrind, but appearently it slows down processing so
 much, that completely other effects occur and the problem I describe does
 not appear (at least not after 1.5 days).

 I have seen some uninitialized jump or move warnings but those were in
 different code sections.
 And valgrind somehow raises a SIGILL at some point in time, which I think
 comes from valgrind not knowing
 a certain instruction. I have attached an example Valgrind output of our

Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/1510#comment:2>
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