#494: Error decoding ac3 (Multiple frames in a packet from stream 1)
------------------------------------+-----------------------------------
Reporter: Alex__ | Owner:
Type: defect | Status: open
Priority: normal | Component: avcodec
Version: git-master | Resolution:
Keywords: | Blocked By:
Blocking: | Reproduced by developer: 1
Analyzed by developer: 0 |
------------------------------------+-----------------------------------
Changes (by cehoyos):
* status: new => open
* component: undetermined => avcodec
* reproduced: 0 => 1
Comment:
Also fails with mplayer -demuxer lavf -ac ffac3 and mplayer -demuxer mov
-ac ffac3
out.wav is silent
{{{
$ ffmpeg -i sample-issue-494.mov out.wav
ffmpeg version N-32748-g358d837, Copyright (c) 2000-2011 the FFmpeg
developers
built on Sep 21 2011 11:43:56 with gcc 4.5.3
configuration: --cc=/usr/local/gcc-4.5.3/bin/gcc --enable-libspeex
libavutil 51. 16. 1 / 51. 16. 1
libavcodec 53. 16. 0 / 53. 16. 0
libavformat 53. 12. 0 / 53. 12. 0
libavdevice 53. 4. 0 / 53. 4. 0
libavfilter 2. 43. 2 / 2. 43. 2
libswscale 2. 1. 0 / 2. 1. 0
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'sample-issue-494.mov':
Metadata:
major_brand : qt
minor_version : 537199360
compatible_brands: qt
creation_time : 2008-06-12 11:29:44
title : Hoodwinked
artist : Glenn Close, Chazz Palminteri, David Ogden Stiers,
Patrick Warburton, Andy Dick
genre : Kids & Family
date : 2005-06-15T12:00:00Z
album :
description : Hoodwinked fuses the classic fairy tale of Little
Red Riding Hood with the crisscrossing storylines of film noir--pretty
ambitious stuff for a computer-animated cartoon. The police cordon off
Grandma's cottage and an amphibious version of William Powell n
synopsis : Hoodwinked fuses the classic fairy tale of Little
Red Riding Hood with the crisscrossing storylines of film noir--pretty
ambitious stuff for a computer-animated cartoon. The police cordon off
Grandma's cottage and an amphibious version of William Powell n
composer :
show :
episode_id :
network :
Duration: 01:20:53.97, start: 0.000000, bitrate: 8 kb/s
Stream #0.0(eng): Video: mpeg4 (Advanced Simple Profile) (DX50 /
0x30355844), yuv420p, 560x306 [SAR 1:1 DAR 280:153], 943 kb/s, 23.98 fps,
23.98 tbr, 2997 tbn, 23.98 tbc
Metadata:
creation_time : 2008-06-12 11:29:44
Stream #0.1(eng): Audio: ac3 (ms [0] / 0x20736D), 48000 Hz, 2
channels, s16, 255 kb/s
Metadata:
creation_time : 2008-06-12 11:29:45
Output #0, wav, to 'out.wav':
Metadata:
major_brand : qt
minor_version : 537199360
compatible_brands: qt
creation_time : 2008-06-12 11:29:44
title : Hoodwinked
artist : Glenn Close, Chazz Palminteri, David Ogden Stiers,
Patrick Warburton, Andy Dick
genre : Kids & Family
date : 2005-06-15T12:00:00Z
album :
description : Hoodwinked fuses the classic fairy tale of Little
Red Riding Hood with the crisscrossing storylines of film noir--pretty
ambitious stuff for a computer-animated cartoon. The police cordon off
Grandma's cottage and an amphibious version of William Powell n
synopsis : Hoodwinked fuses the classic fairy tale of Little
Red Riding Hood with the crisscrossing storylines of film noir--pretty
ambitious stuff for a computer-animated cartoon. The police cordon off
Grandma's cottage and an amphibious version of William Powell n
composer :
show :
episode_id :
network :
encoder : Lavf53.12.0
Stream #0.0(eng): Audio: pcm_s16le ([1][0][0][0] / 0x0001), 48000 Hz,
2 channels, s16, 1536 kb/s
Metadata:
creation_time : 2008-06-12 11:29:45
Stream mapping:
Stream #0.1 -> #0.0 (ac3 -> pcm_s16le)
Press [q] to stop, [?] for help
Multiple frames in a packet from stream 1
[ac3 @ 0x12be420] incomplete frame
[ac3 @ 0x12be420] frame sync error
Error while decoding stream #0.1
Error while decoding stream #0.1
...
Error while decoding stream #0.1
Error while decoding stream #0.1
Last message repeated 389 times
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x12b6780] stream 1, offset 0x4e250b: partial
file
size= 96kB time=00:00:00.51 bitrate=1536.7kbits/s
video:0kB audio:96kB global headers:0kB muxing overhead 0.044759%
}}}
The following commands work as expected:
mplayer -demuxer lavf -ac a52 sample-issue-494.mov
mplayer -demuxer mov -ac a52 sample-issue-494.mov
mplayer -demuxer lavf -dumpaudio sample-issue-494.mov && ffmpeg -i
stream.dump out.wav
mplayer -demuxer mov -dumpaudio sample-issue-494.mov && ffmpeg -i
stream.dump out.wav
mplayer -ac hwac3 sample-issue-494.mov
--
Ticket URL: <https://avcodec.org/trac/ffmpeg/ticket/494#comment:2>
FFmpeg <http://ffmpeg.org>
FFmpeg issue tracker
_______________________________________________
FFmpeg-trac mailing list
FFmpeg-trac@avcodec.org
http://avcodec.org/mailman/listinfo/ffmpeg-trac
