[FFmpeg-trac] #4875(undetermined:new): Hangs up during convertion with libx264 to mp4 container

[FFmpeg]

#4875: Hangs up during convertion with libx264 to mp4 container
-------------------------------------+-------------------------------------
             Reporter:  maxvgi       |                    Owner:
                 Type:  defect       |                   Status:  new
             Priority:  important    |                Component:
              Version:  git-master   |  undetermined
             Keywords:  deadlock     |               Resolution:
  regression                         |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------

Comment (by maxvgi):

 I have compiled current sources from git.

 {{{-vcodec mpeg4 -qscale 2}}} leads to the same problem.

 I have uploaded the sample video to
 ftp://upload.ffmpeg.org/incoming/hang_up_during_convertion_to_mp4.mp4

 Fresh ffmpeg reports and console output are attached.

 gdb backtrace:

 {{{
 #0  pthread_cond_wait@@GLIBC_2.3.2 () at
 ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
 #1  0x00007ffff6568373 in ?? () from
 /usr/local-2015-09-23/lib/libavcodec.so.57
 #2  0x00007ffff6509ce2 in ?? () from
 /usr/local-2015-09-23/lib/libavcodec.so.57
 #3  0x00007ffff665d78c in avcodec_encode_video2 () from
 /usr/local-2015-09-23/lib/libavcodec.so.57
 #4  0x000000000041fac6 in do_video_out (s=0x63ae00,
 ost=ost at entry=0x63b940, next_picture=next_picture at entry=0x1f348c0,
 sync_ipts=<optimized out>) at ffmpeg.c:1191
 #5  0x0000000000420dc6 in reap_filters (flush=0, flush at entry=6535488) at
 ffmpeg.c:1382
 #6  0x0000000000426c7a in transcode_step () at ffmpeg.c:3931
 #7  transcode () at ffmpeg.c:3974
 #8  0x0000000000408bf8 in main (argc=<optimized out>, argv=0x7fffffffead8)
 at ffmpeg.c:4157
 }}}


 Use the following command to reproduce the bug:
 {{{
 ffmpeg -i hang_up_during_convertion_to_mp4.mp4 -vcodec mpeg4 -qscale 2
 out.mp4
 }}}

--
Ticket URL: <https://trac.ffmpeg.org/ticket/4875#comment:3>
FFmpeg <https://ffmpeg.org>
FFmpeg issue tracker