[FFmpeg-trac] #2782(avformat:open): aac - Malformed AAC bitstream - incorrectly fixed with -bsf:a aac_adtstoasc' option

[FFmpeg]

#2782: aac - Malformed AAC bitstream - incorrectly fixed with -bsf:a
aac_adtstoasc' option
------------------------------------+------------------------------------
             Reporter:  feelart     |                    Owner:
                 Type:  defect      |                   Status:  open
             Priority:  normal      |                Component:  avformat
              Version:  git-master  |               Resolution:
             Keywords:  aac mov     |               Blocked By:
             Blocking:              |  Reproduced by developer:  0
Analyzed by developer:  0           |
------------------------------------+------------------------------------

Comment (by feelart):

 Regarding MP4Box, I don't know this tool.

 https://github.com/elfchief/mp3gain/blob/master/aacgain/aacgain.cpp

 Line 317&318
 {{{
 //ignore error 4 (scalefactor out of range) which seems to happen on some
 tracks
 //other errors are fatal
 }}}
 aacgain starts to process the file almost till the end, then stops on
 fatal error.

 Same kind of fatal error both with
 {{{
 ffmpeg -i alice.aac -bsf:a aac_adtstoasc -vol 312 test.aac
 or
 ffmpeg -y -i alice.aac -bsf:a aac_adtstoasc -af volume=1.5 test.aac
 }}}


 {{{
 F:\Youtube Extract\Music>ffmpeg -y -i alice.aac -bsf:a aac_adtstoasc -af
 volume=1.5 test.aac
 ffmpeg version N-54691-g7f4a1fd Copyright (c) 2000-2013 the FFmpeg
 developers
   built on Jul 12 2013 16:31:48 with gcc 4.7.3 (GCC)
   configuration: --enable-gpl --enable-version3 --disable-w32threads
 --enable-avisynth --enable-bzlib --enable-fontconfig --en
 able-frei0r --enable-gnutls --enable-iconv --enable-libass --enable-
 libbluray --enable-libcaca --enable-libfreetype --enable-l
 ibgsm --enable-libilbc --enable-libmodplug --enable-libmp3lame --enable-
 libopencore-amrnb --enable-libopencore-amrwb --enable-
 libopenjpeg --enable-libopus --enable-librtmp --enable-libschroedinger
 --enable-libsoxr --enable-libspeex --enable-libtheora -
 -enable-libtwolame --enable-libvo-aacenc --enable-libvo-amrwbenc --enable-
 libvorbis --enable-libvpx --enable-libx264 --enable-
 libxavs --enable-libxvid --enable-zlib
   libavutil      52. 39.100 / 52. 39.100
   libavcodec     55. 18.102 / 55. 18.102
   libavformat    55. 12.102 / 55. 12.102
   libavdevice    55.  3.100 / 55.  3.100
   libavfilter     3. 80.101 /  3. 80.101
   libswscale      2.  3.100 /  2.  3.100
   libswresample   0. 17.102 /  0. 17.102
   libpostproc    52.  3.100 / 52.  3.100
 [aac @ 0000000002529fe0] Estimating duration from bitrate, this may be
 inaccurate
 Input #0, aac, from 'alice.aac':
   Metadata:
     title           : Alice Deejay - Better Off Alon
   Duration: 00:03:46.41, bitrate: 77 kb/s
     Stream #0:0: Audio: aac, 44100 Hz, stereo, fltp, 77 kb/s
 Output #0, adts, to 'test.aac':
   Metadata:
     title           : Alice Deejay - Better Off Alon
     encoder         : Lavf55.12.102
     Stream #0:0: Audio: aac (libvo_aacenc), 44100 Hz, stereo, s16, 128
 kb/s
 Stream mapping:
   Stream #0:0 -> #0:0 (aac -> libvo_aacenc)
 Press [q] to stop, [?] for help
 decode_band_types: Input buffer exhausted before END element found
 Error while decoding stream #0:0: Invalid data found when processing input
 [aac @ 0000000002536ea0] channel element 2.0 is not allocated
 Error while decoding stream #0:0: Error number -1 occurred
 size=    2440kB time=00:02:39.13 bitrate= 125.6kbits/s
 video:0kB audio:2487kB subtitle:0 global headers:0kB muxing overhead
 -1.884090%
 }}}

 So far as I understand, it's a bug for ffmpeg.
 I have other samples, which throw other error.


 P.S. Work in progress against annoying important de-synch bugs such as
 ticket 2400?

-- 
Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/2782#comment:4>
FFmpeg <http://ffmpeg.org>
FFmpeg issue tracker