id	summary	reporter	owner	description	type	status	priority	component	version	resolution	keywords	cc	blockedby	blocking	reproduced	analyzed
1638	SWF demuxer cannot correctly identify MP3 stream	mbradshaw		"I created a SWF file with Adobe Flash Professional CS6 today. It's a simple SWF that just contains a MP3 track. FFmpeg does not correctly read this though and is not able to identify the MP3 stream.

Below is the output from ffmpeg regarding this SWF I created today:
{{{
$ ./ffmpeg -i ~/UntitledTest.swf
ffmpeg version N-43294-g8993c25 Copyright (c) 2000-2012 the FFmpeg developers
  built on Aug 12 2012 10:15:07 with gcc 4.2.1 (GCC) (Apple Inc. build 5666) (dot 3)
  configuration: --enable-libx264 --enable-gpl --enable-libopenjpeg
  libavutil      51. 66.101 / 51. 66.101
  libavcodec     54. 50.100 / 54. 50.100
  libavformat    54. 22.101 / 54. 22.101
  libavdevice    54.  2.100 / 54.  2.100
  libavfilter     3.  5.102 /  3.  5.102
  libswscale      2.  1.101 /  2.  1.101
  libswresample   0. 15.100 /  0. 15.100
  libpostproc    52.  0.100 / 52.  0.100
[swf @ 0x10180ec00] Could not find codec parameters for stream 0 (Audio: pcm_s16le, 5512 Hz, 1 channels, 88 kb/s): unspecified sample format
Consider increasing the value for the 'analyzeduration' and 'probesize' options
[swf @ 0x10180ec00] Estimating duration from bitrate, this may be inaccurate
/Users/mjbshaw/UntitledTest.swf: could not find codec parameters
}}}

I decompiled the swf file with Sothink's SWF Decompiler and got the following (correct) mp3 out:
{{{
$ ./ffmpeg -i ~/Desktop/UntitledTest/sound/sound\ 1.mp3 
ffmpeg version N-43294-g8993c25 Copyright (c) 2000-2012 the FFmpeg developers
  built on Aug 12 2012 10:15:07 with gcc 4.2.1 (GCC) (Apple Inc. build 5666) (dot 3)
  configuration: --enable-libx264 --enable-gpl --enable-libopenjpeg
  libavutil      51. 66.101 / 51. 66.101
  libavcodec     54. 50.100 / 54. 50.100
  libavformat    54. 22.101 / 54. 22.101
  libavdevice    54.  2.100 / 54.  2.100
  libavfilter     3.  5.102 /  3.  5.102
  libswscale      2.  1.101 /  2.  1.101
  libswresample   0. 15.100 /  0. 15.100
  libpostproc    52.  0.100 / 52.  0.100
[mp3 @ 0x10180ec00] max_analyze_duration 5000000 reached at 5015510
[mp3 @ 0x10180ec00] Estimating duration from bitrate, this may be inaccurate
Input #0, mp3, from '/Users/mjbshaw/Desktop/UntitledTest/sound/sound 1.mp3':
  Duration: 00:00:55.95, start: 0.000000, bitrate: 128 kb/s
    Stream #0:0: Audio: mp3, 44100 Hz, stereo, s16, 128 kb/s
At least one output file must be specified
}}}"	defect	closed	normal	avformat	git-master	fixed	swf				1	0