Public bug reported:
Binary package hint: mplayer
$ gdb --args ../../../src/mplayer/mencoder 0{1..2}.avi -o temp.avi -oac pcm
-ovc copy -lavcopts vcodec=ffvhuff -vf harddup -af lavcresample=44100
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Reading symbols from /home/matteo/src/mplayer/mencoder...done.
(gdb) run
Starting program: /home/matteo/src/mplayer/mencoder 01.avi 02.avi -o temp.avi
-oac pcm -ovc copy -lavcopts vcodec=ffvhuff -vf harddup -af lavcresample=44100
[Thread debugging using libthread_db enabled]
MEncoder SVN-r31471-4.4.3 (C) 2000-2010 MPlayer Team
success: format: 0 data: 0x0 - 0x2da802e
AVI file format detected.
[aviheader] Video stream found, -vid 0
[aviheader] Audio stream found, -aid 1
VIDEO: [DX50] 592x448 24bpp 25.000 fps 914.8 kbps (111.7 kbyte/s)
[V] filefmt:3 fourcc:0x30355844 size:592x448 fps:25.000 ftime:=0.0400
==========================================================================
Opening audio decoder: [mp3lib] MPEG layer-2, layer-3
big_values too large!
big_values too large!
big_values too large!
mpg123: Can't rewind stream by 373 bits!
AUDIO: 48000 Hz, 2 ch, s16le, 56.0 kbit/3.65% (ratio: 7000->192000)
Selected audio codec: [mp3] afm: mp3lib (mp3lib MPEG layer-2, layer-3)
==========================================================================
videocodec: framecopy (592x448 24bpp fourcc=30355844)
mpg123: Can't rewind stream by 753 bits!
Writing header...
ODML: Aspect information not (yet?) available or unspecified, not writing vprp
header.
Writing header...
ODML: Aspect information not (yet?) available or unspecified, not writing vprp
header.
Pos: 0.9s 22f ( 0%) 0.00fps Trem: 0min 80mb A-V:0.084 [0:1536]
Skipping frame!
Pos: 1.2s 32f ( 0%) 0.00fps Trem: 0min 81mb A-V:0.081 [1051:1536]
Skipping frame!
Pos: 1.8s 47f ( 0%) 0.00fps Trem: 0min 87mb A-V:0.083 [1021:1536]
Skipping frame!
Pos: 3.0s 79f ( 1%) 0.00fps Trem: 0min 93mb A-V:0.081 [964:1536]]
Skipping frame!
success: format: 0 data: 0x0 - 0xf80104em: 0min 100mb A-V:-0.018 [914:1536]
AVI file format detected.
[aviheader] Video stream found, -vid 0
[aviheader] Audio stream found, -aid 1
VIDEO: [DX50] 592x448 24bpp 25.000 fps 949.2 kbps (115.9 kbyte/s)
[V] filefmt:3 fourcc:0x30355844 size:592x448 fps:25.000 ftime:=0.0400
==========================================================================
Opening audio decoder: [mp3lib] MPEG layer-2, layer-3
AUDIO: 48000 Hz, 2 ch, s16le, 192.0 kbit/12.50% (ratio: 24000->192000)
Selected audio codec: [mp3] afm: mp3lib (mp3lib MPEG layer-2, layer-3)
==========================================================================
videocodec: framecopy (592x448 24bpp fourcc=30355844)
Program received signal SIGSEGV, Segmentation fault.
0x000000000045c811 in fixup_output_format (s=0x13524b0) at libaf/af.c:372
372 if(s->output.nch && s->last->data->nch!=s->output.nch){
(gdb) bt
#0 0x000000000045c811 in fixup_output_format (s=0x13524b0) at libaf/af.c:372
#1 0x000000000045cbe0 in af_init (s=0x13524b0) at libaf/af.c:509
#2 0x0000000000470267 in init_audio_filters (sh_audio=0x1566320,
in_samplerate=<value optimized out>, out_samplerate=0x7fffffffe10c,
out_channels=0x7fffffffe108, out_format=0x7fffffffe104)
at libmpcodecs/dec_audio.c:354
#3 0x000000000042ddd0 in main (argc=<value optimized out>, argv=<value
optimized out>) at mencoder.c:1253
(gdb) p s->output.nch
$1 = 2
(gdb) p s->output
$2 = {audio = 0x0, len = 0, rate = 48000, nch = 2, format = 9, bps = 2}
(gdb) p s->last->data
Cannot access memory at address 0x28
(gdb) p s->last
$3 = (af_instance_t *) 0x0
(gdb)
** Affects: mplayer (Ubuntu)
Importance: Undecided
Status: New
--
mencoder SIGSEGV in fixup_output_format
https://bugs.launchpad.net/bugs/596118
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