[FFmpeg-trac] #1692(avfilter:new): Using atempo filter causes segfault

FFmpeg trac at avcodec.org
Tue Aug 28 11:51:32 CEST 2012


#1692: Using atempo filter causes segfault
------------------------------------+------------------------------------
             Reporter:  takis       |                    Owner:
                 Type:  defect      |                   Status:  new
             Priority:  normal      |                Component:  avfilter
              Version:  git-master  |               Resolution:
             Keywords:              |               Blocked By:
             Blocking:              |  Reproduced by developer:  0
Analyzed by developer:  0           |
------------------------------------+------------------------------------

Comment (by takis):

 (gdb) r -y -i audiogen.wav -af atempo=0.8 asdf.wav
 Starting program: /usr/local/src/ff/ffmpeg.org/build-gcc/ffmpeg_g -y -i
 audiogen.wav -af atempo=0.8 asdf.wav
 [Thread debugging using libthread_db enabled]
 Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
 ffmpeg version N-43928-g60924df Copyright (c) 2000-2012 the FFmpeg
 developers
   built on Aug 27 2012 14:19:01 with gcc 4.6 (Ubuntu/Linaro
 4.6.3-1ubuntu5)
   configuration: --enable-avfilter --enable-frei0r --enable-gpl --enable-
 libfaac --enable-libmp3lame --enable-libschroedinger --enable-libspeex
 --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libx264
 --enable-libxvid --enable-nonfree --enable-pic --enable-pthreads --enable-
 shared --enable-version3 --enable-x11grab
   libavutil      51. 70.100 / 51. 70.100
   libavcodec     54. 54.100 / 54. 54.100
   libavformat    54. 25.104 / 54. 25.104
   libavdevice    54.  2.100 / 54.  2.100
   libavfilter     3. 13.101 /  3. 13.101
   libswscale      2.  1.101 /  2.  1.101
   libswresample   0. 15.100 /  0. 15.100
   libpostproc    52.  0.100 / 52.  0.100
 [wav @ 0x632240] max_analyze_duration 5000000 reached at 5015510
 Guessed Channel Layout for  Input Stream #0.0 : stereo
 Input #0, wav, from 'audiogen.wav':
   Duration: 00:00:06.00, bitrate: 1411 kb/s
     Stream #0:0: Audio: pcm_s16le ([1][0][0][0] / 0x0001), 44100 Hz,
 stereo, s16, 1411 kb/s
 Output #0, wav, to 'asdf.wav':
   Metadata:
     encoder         : Lavf54.25.104
     Stream #0:0: Audio: pcm_s16le ([1][0][0][0] / 0x0001), 44100 Hz,
 stereo, s16, 1411 kb/s
 Stream mapping:
   Stream #0:0 -> #0:0 (pcm_s16le -> pcm_s16le)
 Press [q] to stop, [?] for help

 Program received signal SIGSEGV, Segmentation fault.
 0x00007ffff6c691d0 in ?? () from /usr/local/lib/libavcodec.so.54
 (gdb) bt
 #0  0x00007ffff6c691d0 in ?? () from /usr/local/lib/libavcodec.so.54
 #1  0x00007ffff6c69315 in ?? () from /usr/local/lib/libavcodec.so.54
 #2  0x00007ffff6c69d15 in ?? () from /usr/local/lib/libavcodec.so.54
 #3  0x00007ffff6c69d55 in ?? () from /usr/local/lib/libavcodec.so.54
 #4  0x00007ffff6c69d95 in ?? () from /usr/local/lib/libavcodec.so.54
 #5  0x00007ffff6c69dd5 in ?? () from /usr/local/lib/libavcodec.so.54
 #6  0x00007ffff6c69e15 in ?? () from /usr/local/lib/libavcodec.so.54
 #7  0x00007ffff6c6a185 in ?? () from /usr/local/lib/libavcodec.so.54
 #8  0x00007ffff6c699d0 in ?? () from /usr/local/lib/libavcodec.so.54
 #9  0x00007ffff6b20fdb in ?? () from /usr/local/lib/libavcodec.so.54
 #10 0x00007ffff793d673 in ?? () from /usr/local/lib/libavfilter.so.3
 #11 0x00007ffff794149b in ?? () from /usr/local/lib/libavfilter.so.3
 #12 0x00007ffff7946f4d in ?? () from /usr/local/lib/libavfilter.so.3
 #13 0x00007ffff7947176 in av_buffersrc_add_ref () from
 /usr/local/lib/libavfilter.so.3
 #14 0x00007ffff79472e8 in av_buffersrc_add_frame () from
 /usr/local/lib/libavfilter.so.3
 #15 0x0000000000417aa3 in decode_audio (got_output=0x7fffffffd70c,
 pkt=0x7fffffffd600, ist=0x71b3c0)
     at /usr/local/src/ff/ffmpeg.org/ffmpeg.c:1524
 #16 output_packet (ist=<optimized out>, pkt=<optimized out>) at
 /usr/local/src/ff/ffmpeg.org/ffmpeg.c:1753
 #17 0x00000000004188d9 in process_input (file_index=<optimized out>) at
 /usr/local/src/ff/ffmpeg.org/ffmpeg.c:2818
 #18 0x0000000000407512 in transcode_step () at
 /usr/local/src/ff/ffmpeg.org/ffmpeg.c:2914
 #19 transcode () at /usr/local/src/ff/ffmpeg.org/ffmpeg.c:2966
 #20 main (argc=<optimized out>, argv=<optimized out>) at
 /usr/local/src/ff/ffmpeg.org/ffmpeg.c:3146
 (gdb)

-- 
Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/1692#comment:2>
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