id	summary	reporter	owner	description	type	status	priority	component	version	resolution	keywords	cc	blockedby	blocking	reproduced	analyzed
1916	mxf format pcm_s24le decoding is broken.	dem0n		"'''Summary of the bug:'''
I am trying to extract audio stream from mxf file and transcode it from  pcm_s24le to pcm_s16le audio, but ffmpeg returns broken file instead. ffmpeg versions used: 1.0 and N-46710-g4facddd (from git). In ffmpeg 0.7.13 this is working well with the same sample-file.

'''How to reproduce:'''
To reproduce this behavior please use pcm_s24le_to_pcm_s16le.mxf sample-file, which was uploaded to ffmpeg public ftp and run ffmpeg with following params:
{{{
~/ffmpeg-git-20121113/bin/ffmpeg -y -i ./pcm_s24le_to_pcm_s16le.mxf -vn -map 0:0 -acodec pcm_s16le ./a0_0:0.wav

----
Detailed ffmpeg output:

$ ~/ffmpeg-git-20121113/bin/ffmpeg -v 9 -loglevel 99 -y -i ./pcm_s24le_to_pcm_s16le.mxf -vn -map 0:0 -acodec pcm_s16le ./a0_0:0.wav
ffmpeg version N-46710-g4facddd Copyright (c) 2000-2012 the FFmpeg developers
  built on Nov 13 2012 18:33:45 with gcc 4.6 (Ubuntu/Linaro 4.6.3-1ubuntu5)
  configuration: --enable-libx264 --prefix=/home/mkproxy-test/ffmpeg-git-20121113 --enable-gpl --enable-shared
  libavutil      52.  6.100 / 52.  6.100
  libavcodec     54. 71.100 / 54. 71.100
  libavformat    54. 36.100 / 54. 36.100
  libavdevice    54.  3.100 / 54.  3.100
  libavfilter     3. 23.100 /  3. 23.100
  libswscale      2.  1.102 /  2.  1.102
  libswresample   0. 16.100 /  0. 16.100
  libpostproc    52.  1.100 / 52.  1.100
[mxf @ 0x1dd0280] Format mxf probed with size=2048 and score=100
[mxf @ 0x1dd0280] File position before avformat_find_stream_info() is 11741
[mxf @ 0x1dd0280] KLV for edit unit 0 extends into next edit unit - OPAtom misinterpreted as OP1a?
[mxf @ 0x1dd0280] If you want to help, upload a sample of this file to ftp://upload.ffmpeg.org/MPlayer/incoming/ and contact the ffmpeg-devel mailing list.
[mxf @ 0x1dd0280] File position after avformat_find_stream_info() is 11765
Guessed Channel Layout for  Input Stream #0.0 : mono
Input #0, mxf, from './pcm_s24le_to_pcm_s16le.mxf':
  Metadata:
    timecode        : 00:58:00:00
  Duration: 01:55:06.90, start: 0.000000, bitrate: 10 kb/s
    Stream #0:0, 0, 1001/24000: Audio: pcm_s24le, 48000 Hz, mono, s32, 1152 kb/s
[abuffer @ 0x1dd3360] Setting entry with key 'time_base' to value '1/48000'
[abuffer @ 0x1dd3360] Setting entry with key 'sample_rate' to value '48000'
[abuffer @ 0x1dd3360] Setting entry with key 'sample_fmt' to value 's32'
[abuffer @ 0x1dd3360] Setting entry with key 'channel_layout' to value '0x4'
[graph 0 input from stream 0:0 @ 0x1dd37e0] tb:1/48000 samplefmt:s32 samplerate:48000 chlayout:0x4
[aformat @ 0x1dd3640] Setting entry with key 'sample_fmts' to value 's16'
[audio format for output stream 0:0 @ 0x1dd3dc0] auto-inserting filter 'auto-inserted resampler 0' between the filter 'Parsed_anull_0' and the filter 'audio format for output stream 0:0'
[auto-inserted resampler 0 @ 0x1dd4f40] chl:mono fmt:s32 r:48000Hz -> chl:mono fmt:s16 r:48000Hz
Output #0, wav, to './a0_0:0.wav':
  Metadata:
    ISMP            : 00:58:00:00
    ISFT            : Lavf54.36.100
    Stream #0:0, 0, 1/48000: Audio: pcm_s16le ([1][0][0][0] / 0x0001), 48000 Hz, mono, s16, 768 kb/s
Stream mapping:
  Stream #0:0 -> #0:0 (pcm_s24le -> pcm_s16le)
Press [q] to stop, [?] for help
./pcm_s24le_to_pcm_s16le.mxf: Operation not permitted
[output stream 0:0 @ 0x1dd3d60] EOF on sink link output stream 0:0:default.
No more output streams to write to, finishing.
size=       0kB time=00:00:00.00 bitrate=   0.0kbits/s   
video:0kB audio:0kB subtitle:0 global headers:0kB muxing overhead inf%
Output file is empty, nothing was encoded (check -ss / -t / -frames parameters if used)
Statistics: 9458516 bytes read, 2 seeks
}}}

Thanks in advance!

"	defect	closed	important	avformat	git-master	wontfix	mxf regression				1	0