New submission from mt <m...@nef.wh.uni-dortmund.de>:

ffmpeg -i input.mkv -y -map 0:0 -vcodec copy -map 0:1 -acodec ac3 -ab 
448k -ac 6 output.m4v -map 0:1 -acodec aac -ab 128k -ac 2 -strict 
experimental -newaudio
FFmpeg version git-a1c1d3c, Copyright (c) 2000-2011 the FFmpeg 
developers
  built on Feb  8 2011 08:51:57 with gcc 4.2.1 (Apple Inc. build 5664)
  configuration: 
  libavutil    50. 37. 0 / 50. 37. 0
  libavcore     0. 16. 1 /  0. 16. 1
  libavcodec   52.110. 0 / 52.110. 0
  libavformat  52. 97. 0 / 52. 97. 0
  libavdevice  52.  2. 3 / 52.  2. 3
  libavfilter   1. 74. 0 /  1. 74. 0
  libswscale    0. 12. 0 /  0. 12. 0
[matroska,webm @ 0x1009600] max_analyze_duration reached
[matroska,webm @ 0x1009600] Estimating duration from bitrate, this may 
be inaccurate
Input #0, matroska,webm, from 'input.mkv':
  Duration: 01:44:05.00, start: 0.000000, bitrate: 3072 kb/s
    Stream #0.0(ger): Video: h264 (High), yuv420p, 1920x816 [PAR 1:1 DAR 
40:17], 25 fps, 25 tbr, 1k tbn, 50 tbc
    Stream #0.1(ger): Audio: dca (DTS), 48000 Hz, 5.1, s16, 1536 kb/s
    Metadata:
      title           : dts(1536)
    Stream #0.2(eng): Audio: dca (DTS), 48000 Hz, 5.1, s16, 1536 kb/s
    Metadata:
      title           : dts(1536)
    Stream #0.3(ger): Subtitle: [0][0][0][0] / 0x0000
    Metadata:
      title           : normal
Incompatible sample format 's16' for codec 'ac3', auto-selecting format 
'flt'
Output #0, ipod, to 'output.m4v':
  Metadata:
    encoder         : Lavf52.97.0
    Stream #0.0(ger): Video: avc1 / 0x31637661, yuv420p, 1920x816 [PAR 
1:1 DAR 40:17], q=2-31, 25 tbn, 25 tbc
    Stream #0.1(ger): Audio: ac3, 48000 Hz, 5.1, flt, 448 kb/s
    Metadata:
      title           : dts(1536)
    Stream #0.2(ger): Audio: aac, 48000 Hz, 2 channels, s16, 128 kb/s
    Metadata:
      title           : dts(1536)
Stream mapping:
  Stream #0.0 -> #0.0
  Stream #0.1 -> #0.1
  Stream #0.1 -> #0.2
Press [q] to stop encoding
Input stream #0.1 frame changed from rate:48000 fmt:s16 ch:6 to 
rate:48000 fmt:s16 ch:2
ffmpeg(9808) malloc: *** error for object 0x10c6a04: incorrect checksum 
for freed object - object was probably modified after being freed.
*** set a breakpoint in malloc_error_break to debug
ffmpeg(9808) malloc: *** error for object 0x10c6a00: incorrect checksum 
for freed object - object was probably modified after being freed.
*** set a breakpoint in malloc_error_break to debug
ffmpeg(9808) malloc: *** error for object 0x10c6a04: incorrect checksum 
for freed object - object was probably modified after being freed.
*** set a breakpoint in malloc_error_break to debug
ffmpeg(9808) malloc: *** error for object 0x10c6a04: incorrect checksum 
for freed object - object was probably modified after being freed.
*** set a breakpoint in malloc_error_break to debug
ffmpeg(9808) malloc: *** error for object 0x10c6a04: incorrect checksum 
for freed object - object was probably modified after being freed.
*** set a breakpoint in malloc_error_break to debug
ffmpeg(9808) malloc: *** error for object 0x10c6a04: incorrect checksum 
for freed object - object was probably modified after being freed.
*** set a breakpoint in malloc_error_break to debug
ffmpeg(9808) malloc: *** error for object 0x10c6a04: incorrect checksum 
for freed object - object was probably modified after being freed.
*** set a breakpoint in malloc_error_break to debug
ffmpeg(9808) malloc: *** error for object 0x10c6a04: incorrect checksum 
for freed object - object was probably modified after being freed.
*** set a breakpoint in malloc_error_break to debug
ffmpeg(9808) malloc: *** error for object 0x10c6a04: incorrect checksum 
for freed object - object was probably modified after being freed.
*** set a breakpoint in malloc_error_break to debug
ffmpeg(9808) malloc: *** error for object 0x10c6a04: incorrect checksum 
for freed object - object was probably modified after being freed.
*** set a breakpoint in malloc_error_break to debug
ffmpeg(9808) malloc: *** error for object 0x10c6a04: incorrect checksum 
for freed object - object was probably modified after being freed.
*** set a breakpoint in malloc_error_break to debug
ffmpeg(9808) malloc: *** error for object 0x10c6a00: incorrect checksum 
for freed object - object was probably modified after being freed.
*** set a breakpoint in malloc_error_break to debug
ffmpeg(9808) malloc: *** error for object 0x10c6804: incorrect checksum 
for freed object - object was probably modified after being freed.
*** set a breakpoint in malloc_error_break to debug
ffmpeg(9808) malloc: *** error for object 0x10c6404: incorrect checksum 
for freed object - object was probably modified after being freed.
*** set a breakpoint in malloc_error_break to debug
ffmpeg(9808) malloc: *** error for object 0x10c6400: incorrect checksum 
for freed object - object was probably modified after being freed.
*** set a breakpoint in malloc_error_break to debug
ffmpeg(9808) malloc: *** error for object 0x10c6404: incorrect checksum 
for freed object - object was probably modified after being freed.
*** set a breakpoint in malloc_error_break to debug
Bus error

----------
messages: 13636
priority: normal
status: new
substatus: new
title: malloc bus error while DTS reencode
type: bug

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FFmpeg issue tracker <iss...@roundup.ffmpeg.org>
<https://roundup.ffmpeg.org/issue2591>
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