Bug#755923: libavcodec55: crash at av_opt_free(avctx)

[Arvind R.]

Package: libavcodec55
Severity: important

Dear Maintainer,

   * What led up to the situation?
   porting cinelerra to use git version of libav
   * What exactly did you do (or not do) that was effective (or
     ineffective)?
   use ifdefs for new version and call avcodec_alloc_contex3
   and avcodec_free_context as required in newer versions instead
   of avcodec_close,...
   * What was the outcome of this action?
   cinelerra ffmpeg-decoder-close (cinelerra) caused a crash for in
   avcodec_free_context for which I have sent a patch removing the
   wrong free of extradata.
   - Encoder crashes in ffmpeg-encoder-close (cinelerra) in
   avcodec_free_context calling avcodec_close - line 1738 of
   libavcodec/utils.c - av_opt_free(avctx)
   * What outcome did you expect instead?
   the file is closed and the cinelerra output is ok - but the
   instruction crashes cinelerra

-- System Information:
Debian Release: jessie/sid
  APT prefers testing
  APT policy: (500, 'testing')
Architecture: amd64 (x86_64)

Kernel: Linux 3.15.1 (SMP w/4 CPU cores; PREEMPT)
Locale: LANG=en_GB.UTF-8, LC_CTYPE=en_GB.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash

Versions of packages libavcodec55 depends on:
ii  libavutil52            7:2.2.4+gitb5f0eac-0.1
ii  libc6                  2.19-1
ii  libcrystalhd3          1:0.0~git20110715.fdd2f19-11
ii  libfaac0               1:1.28-dmo3
ii  libfdk-aac0            0.1.2-1
ii  libgsm1                1.0.13-4
ii  libmp3lame0            1:3.99.5-dmo1
ii  libopenjpeg5           1.5.2-2
ii  libopus0               1.1-1
ii  libschroedinger-1.0-0  1.0.11-2
ii  libspeex1              1.2~rc1.1-1
pn  libswresample0         <none> - libavresample1 7:2.2.4+gitb5f0eac-0.1
ii  libtheora0             1.1.1+dfsg.1-3.2
ii  libva1                 1.3.1-3
ii  libvorbis0a            1.3.2-1.4
ii  libvorbisenc2          1.3.2-1.4
ii  libvpx1                1.3.0-2
ii  libx264-142            2:0.142.2431+gita5831aa-0.1
ii  libx265-21             1.1-dmo1
ii  libxvidcore4           3:1.3.2-dmo1
ii  multiarch-support      2.19-1
ii  zlib1g                 1:1.2.8.dfsg-1

libavcodec55 recommends no packages.

libavcodec55 suggests no packages.