[FFmpeg-trac] #2430(avformat:new): AIFF decoding bug (zero length output file)

[FFmpeg]

#2430: AIFF decoding bug (zero length output file)
----------------------------------+--------------------------------------
             Reporter:  auphonic  |                     Type:  defect
               Status:  new       |                 Priority:  normal
            Component:  avformat  |                  Version:  git-master
             Keywords:  aiff      |               Blocked By:
             Blocking:            |  Reproduced by developer:  0
Analyzed by developer:  0         |
----------------------------------+--------------------------------------
 ffmpeg cannot read some AIFF input files:
 - decoded output files have always size zero
 - although ffmpeg/ffprobe shows the correct length of the input file
 - in other programs (e.g. audacity) these files are decoded correctly

 Tested with ffmpeg 1.1.3 and 1.2 on Ubuntu 12.04 and 12.10 - more details
 below.

 Use the following testfile, to reproduce the problem:
 https://auphonic.com/media/share/testfile.aiff

 How to reproduce:
 {{{
 ffmpeg -v 9 -loglevel 99 -i testfile.aiff output.wav
 }}}

 Output of ffmpeg:
 {{{
 ffmpeg -v 9 -loglevel 99 -i testfile.aiff output.wav
 ffmpeg version 1.2 Copyright (c) 2000-2013 the FFmpeg developers
   built on Mar 30 2013 10:49:20 with gcc 4.7 (Ubuntu/Linaro
 4.7.2-2ubuntu1)
   configuration: --enable-gpl --enable-version3 --enable-nonfree
 --disable-ffplay --disable-ffserver --disable-avdevice --enable-bzlib
 --enable-libopencore-amrnb --enable-libfreetype --enable-libopencore-amrwb
 --enable-libfaac --enable-libgsm --enable-libmp3lame --enable-
 libschroedinger --enable-libspeex --enable-libvorbis --enable-libvpx
 --enable-libopus
   libavutil      52. 18.100 / 52. 18.100
   libavcodec     54. 92.100 / 54. 92.100
   libavformat    54. 63.104 / 54. 63.104
   libavfilter     3. 42.103 /  3. 42.103
   libswscale      2.  2.100 /  2.  2.100
   libswresample   0. 17.102 /  0. 17.102
   libpostproc    52.  2.100 / 52.  2.100
 Splitting the commandline.
 [...]
 Opening an input file: testfile.aiff.
 [aiff @ 0x9aa53e0] Format aiff probed with size=2048 and score=100
 [aiff @ 0x9aa53e0] id3v2 ver:3 flags:00 len:35
 [aiff @ 0x9aa53e0] File position before avformat_find_stream_info() is 0
 [aiff @ 0x9aa53e0] File position after avformat_find_stream_info() is 0
 Guessed Channel Layout for  Input Stream #0.0 : stereo
 Input #0, aiff, from 'testfile.aiff':
   Metadata:
     encoded_by      : Audio Hijack Pro v2.10.6
   Duration: 00:00:15.37, start: 0.000000, bitrate: 1411 kb/s
     Stream #0:0, 0, 1/44100: Audio: pcm_s16be, 44100 Hz, stereo, s16, 1411
 kb/s
 Successfully opened the file.
 Parsing a group of options: output file output.wav.
 Successfully parsed a group of options.
 Opening an output file: output.wav.
 Successfully opened the file.
 [abuffer @ 0x9a94260] Setting entry with key 'time_base' to value
 '1/44100'
 [abuffer @ 0x9a94260] Setting entry with key 'sample_rate' to value
 '44100'
 [abuffer @ 0x9a94260] Setting entry with key 'sample_fmt' to value 's16'
 [abuffer @ 0x9a94260] Setting entry with key 'channel_layout' to value
 '0x3'
 [graph 0 input from stream 0:0 @ 0x9a946a0] tb:1/44100 samplefmt:s16
 samplerate:44100 chlayout:0x3
 [aformat @ 0x9a942c0] Setting entry with key 'sample_fmts' to value 's16'
 Output #0, wav, to 'output.wav':
   Metadata:
     ITCH            : Audio Hijack Pro v2.10.6
     ISFT            : Lavf54.63.104
     Stream #0:0, 0, 1/44100: Audio: pcm_s16le ([1][0][0][0] / 0x0001),
 44100 Hz, stereo, s16, 1411 kb/s
 Stream mapping:
   Stream #0:0 -> #0:0 (pcm_s16be -> pcm_s16le)
 Press [q] to stop, [?] for help
 [output stream 0:0 @ 0x9a94700] 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=N/A
 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: 32768 bytes read, 2 seeks
 }}}

 Please contact me if you need more information!

-- 
Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/2430>
FFmpeg <http://ffmpeg.org>
FFmpeg issue tracker