[FFmpeg-trac] #2996(undetermined:new): iac: deadlock with forced codec

[FFmpeg]

#2996: iac: deadlock with forced codec
-------------------------------------+-------------------------------------
               Reporter:  ami_stuff  |                  Owner:
                   Type:  defect     |                 Status:  new
               Priority:  normal     |              Component:
                Version:             |  undetermined
  unspecified                        |               Keywords:
             Blocked By:             |               Blocking:
Reproduced by developer:  0          |  Analyzed by developer:  0
-------------------------------------+-------------------------------------
 http://samples.mplayerhq.hu/mtv/comedian_auto.mtv

 {{{
 (gdb) r -threads 1 -acodec iac -i v/comedian_auto.mtv -vn -f null -
 The program being debugged has been started already.
 Start it from the beginning? (y or n) y

 Starting program: /media/sdb1/ffmpeg-HEAD-93439e8/ffmpeg_g -threads 1
 -acodec iac -i v/comedian_auto.mtv -vn -f null -
 [Thread debugging using libthread_db enabled]
 Using host libthread_db library "/lib/i386-linux-gnu/libthread_db.so.1".
 ffmpeg version 2.0-93439e8 Copyright (c) 2000-2013 the FFmpeg developers
   built on Sep 18 2013 23:23:15 with gcc 4.7 (Debian 4.7.2-5)
   configuration: --disable-yasm --enable-gpl --disable-ffprobe --disable-
 ffserver
   libavutil      52. 44.100 / 52. 44.100
   libavcodec     55. 31.101 / 55. 31.101
   libavformat    55. 18.100 / 55. 18.100
   libavdevice    55.  3.100 / 55.  3.100
   libavfilter     3. 86.101 /  3. 86.101
   libswscale      2.  5.100 /  2.  5.100
   libswresample   0. 17.103 /  0. 17.103
   libpostproc    52.  3.100 / 52.  3.100
 [iac @ 0x9115d40] frame header check failed!
 [iac @ 0x9115d40] got 1F7.
 [iac @ 0x9115d40] frame header check failed!
 [iac @ 0x9115d40] got B2.
 [iac @ 0x9115d40] frame header check failed!
 [iac @ 0x9115d40] got 53.
 [iac @ 0x9115d40] frame header check failed!
 [iac @ 0x9115d40] got AC.
 [iac @ 0x9115d40] frame header check failed!
 [iac @ 0x9115d40] got 17C.
 [iac @ 0x9115d40] frame header check failed!
 [iac @ 0x9115d40] got AA.
 [iac @ 0x9115d40] frame header check failed!
 [iac @ 0x9115d40] got 3F.
 [iac @ 0x9115d40] frame header check failed!
 [iac @ 0x9115d40] got 1FD.
 [iac @ 0x9115d40] frame header check failed!
 [iac @ 0x9115d40] got 97.
 [iac @ 0x9115d40] frame header check failed!
 [iac @ 0x9115d40] got 176.

 Program received signal SIGINT, Interrupt.
 bit_allocation (flag=0, freebits=507, stream_format_code=2, chctx=0x10,
     q=<optimized out>) at libavcodec/imc.c:555
 555                     if (++chctx->bitsBandT[found_indx] == 6)
 (gdb) bt
 #0  bit_allocation (flag=0, freebits=507, stream_format_code=2,
 chctx=0x10,
     q=<optimized out>) at libavcodec/imc.c:555
 #1  imc_decode_block (ch=0, q=0x91166a0, avctx=0x9115d40)
     at libavcodec/imc.c:954
 #2  imc_decode_frame (avctx=0x9115d40, data=0x913bb60,
     got_frame_ptr=0xbffff020, avpkt=0xbfffef98) at libavcodec/imc.c:1029
 #3  0x0867aa05 in avcodec_decode_audio4 (avctx=0x9115d40, frame=0x913bb60,
     got_frame_ptr=got_frame_ptr at entry=0xbffff020,
 avpkt=avpkt at entry=0xbffff048)
     at libavcodec/utils.c:2137
 #4  0x08234fe8 in try_decode_frame (st=st at entry=0x9115ac0,
     avpkt=avpkt at entry=0x913bac0, options=0x9115ca0) at
 libavformat/utils.c:2494
 #5  0x0823e691 in avformat_find_stream_info (ic=0x9114e60,
 options=0x9115ca0)
     at libavformat/utils.c:2936
 #6  0x080a66b5 in open_input_file (o=o at entry=0xbffff50c,
     filename=<optimized out>) at ffmpeg_opt.c:809
 #7  0x080a4ed7 in open_files (inout=inout at entry=0x88e725b "input",
     open_file=open_file at entry=0x80a62d0 <open_input_file>,
     l=<error reading variable: Unhandled dwarf expression opcode 0xfa>,
     l=<error reading variable: Unhandled dwarf expression opcode 0xfa>)
     at ffmpeg_opt.c:2494
 #8  0x080ad0e9 in ffmpeg_parse_options (argc=argc at entry=11,
     argv=argv at entry=0xbffff994) at ffmpeg_opt.c:2531
 #9  0x080a25da in main (argc=11, argv=0xbffff994) at ffmpeg.c:3393
 (gdb)
 }}}

-- 
Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/2996>
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