[FFmpeg-trac] #1596(FFmpeg:new): Unable to extract audio (AAC) from Quicktime file with timecode track embedded.

[FFmpeg]

#1596: Unable to extract audio (AAC) from Quicktime file with timecode track
embedded.
----------------------------------+---------------------------------------
             Reporter:  stampe93  |                     Type:  defect
               Status:  new       |                 Priority:  normal
            Component:  FFmpeg    |                  Version:  unspecified
             Keywords:            |               Blocked By:
             Blocking:            |  Reproduced by developer:  0
Analyzed by developer:  0         |
----------------------------------+---------------------------------------
 Summary of the bug:

 I've been working with FFMPEG for quite some time now but have recently
 run into a problem when attempting to use FFMPEG to encode a MOV file to
 an audio WAV file only.  I've done this easily in the past, but was
 provided a MOV file encoded with H264 video and AAC audio.  The MOV also
 has an timecode track.  When I first attempted to transcode the video to a
 lower bit rate H264 file, the encode is fine but without audio.  I noticed
 that examining the source file with FFProbe, I receive an error of:
 Unsupported codec with ID 0 for input stream 1.  FFProbe identifies the
 video correctly at stream #0:0, but when it reaches #0:1, that's where the
 error occurs.  This appears to be the location of the timecode stream.
 The audio stream is not even identified. Quicktime plays the video with
 audio fine and shows the correct movie properties with the AAC audio as
 one of the tracks along with the H264 track and the Timecode track. (See
 attached QT Movie Properties).  VLC also plays fine.  MediaInfo output and
 FFprobe output of the source file are attached. (As you can see in
 MediaInfo, the Timecode ID is before the Audio ID, which I think is the
 reason why FFMPEG does not see the AAC audio. My guess is that the
 timecode track causes the FFProbe scan to error before it reaches the
 audio, so the audio is not found.)

 How to reproduce:
 {{{
 ffmpeg -i "proxy 1500k.mov.
 MOV" -acodec pcm_s16le -vn -y "proxy 1500
 k.wav"
 ffmpeg version N-41416-g718607b Copyright (c) 2000-2012 the FFmpeg
 developers
   built on Jun  8 2012 12:46:19 with gcc 4.6.3
   configuration: --enable-gpl --enable-version3 --disable-w32threads
 --enable-ru
 ntime-cpudetect --enable-avisynth --enable-bzlib --enable-frei0r --enable-
 libass
  --enable-libcelt --enable-libopencore-amrnb --enable-libopencore-amrwb
 --enable
 -libfreetype --enable-libgsm --enable-libmp3lame --enable-libnut --enable-
 libope
 njpeg --enable-librtmp --enable-libschroedinger --enable-libspeex
 --enable-libth
 eora --enable-libutvideo --enable-libvo-aacenc --enable-libvo-amrwbenc
 --enable-
 libvorbis --enable-libvpx --ena  libavutil      51. 56.100 / 51. 56.100
   libavcodec     54. 25.100 / 54. 25.100
   libavformat    54.  6.101 / 54.  6.101
   libavdevice    54.  0.100 / 54.  0.100
   libavfilter     2. 78.101 /  2. 78.101
   libswscale      2.  1.100 /  2.  1.100
   libswresample   0. 15.100 /  0. 15.100
   libpostproc    52.  0.100 / 52.  0.100
 Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'C:\videos\
 proxy 1500k.mov.MOV':
   Metadata:
     major_brand     : qt
     minor_version   : 0
     compatible_brands: qt
     creation_time   : 2012-07-20 09:53:07
   Duration: 00:00:19.65, start: 0.000000, bitrate: 1641 kb/s
     Stream #0:0(eng): Video: h264 (High) (avc1 / 0x31637661), yuv420p,
 640x360 [
 SAR 1:1 DAR 16:9], 1509 kb/s, 29.97 fps, 29.97 tbr, 2997 tbn, 59.94 tbc
     Metadata:
       creation_time   : 2012-07-20 09:53:07
     Stream #0:1(eng): Data: none
     Metadata:
       creation_time   : 2012-07-20 09:53:07
 Output #0, wav, to 'C:\videos\proxy 1500k.wav':
   Metadata:
     major_brand     : qt
     minor_version   : 0
     compatible_brands: qt
     creation_time   : 2012-07-20 09:53:07
 Output file #0 does not contain any stream
 }}}

 I tried using the -map 0:2 (which should be the audio stream), but that
 also fails.  I looked at other MOV videos that also have Timecode streams
 and I have no problem with those.  But those MOVs had the Timecode after
 the Audio stream, which makes me think that is the cause of my problems.
 FFProbe always seems to throw an Unsupported codec error for videos with
 timecode tracks. (In my experience.)  Not sure if that has anything to do
 with my problem.  Thanks.

-- 
Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/1596>
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