[FFmpeg-trac] #1559(avformat:new): cannot seek in .m4a file

[FFmpeg]

#1559: cannot seek in .m4a file
--------------------------------------+----------------------------------
               Reporter:  cehoyos     |                  Owner:
                   Type:  defect      |                 Status:  new
               Priority:  normal      |              Component:  avformat
                Version:  git-master  |               Keywords:  mov
             Blocked By:              |               Blocking:
Reproduced by developer:  0           |  Analyzed by developer:  0
--------------------------------------+----------------------------------
 (issue 1952)
 I will upload a m4a sample that cannot be seeked with ffplay, ffmpeg and
 mplayer -demuxer lavf.
 {{{
 $ ffmpeg -i Nic\ Chagall\ -\ Get\ The\ Kicks\ Podcast\ 001.m4a
 ffmpeg version N-42619-g6b7849e Copyright (c) 2000-2012 the FFmpeg
 developers
   built on Jul 19 2012 08:58:35 with gcc 4.3.2
   configuration: --cc=/usr/local/gcc-4.3.2/bin/gcc --enable-gpl --enable-
 libopenjpeg --enable-libvorbis --enable-libspeex --enable-libmp3lame
 --enable-libtheora --extra-ldflags=-lm --enable-libvpx --enable-libxavs
 --enable-x11grab --enable-libass
   libavutil      51. 65.100 / 51. 65.100
   libavcodec     54. 41.100 / 54. 41.100
   libavformat    54. 17.100 / 54. 17.100
   libavdevice    54.  1.100 / 54.  1.100
   libavfilter     3.  2.100 /  3.  2.100
   libswscale      2.  1.100 /  2.  1.100
   libswresample   0. 15.100 /  0. 15.100
   libpostproc    52.  0.100 / 52.  0.100
 [png @ 0x909f560] Missing png signature
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x90764e0] max_analyze_duration 5000000 reached
 at 5015510
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x90764e0] decoding for stream 4 failed
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x90764e0] Could not find codec parameters for
 stream 4 (Video: png): unspecified size
 Consider increasing the value for the 'analyzeduration' and 'probesize'
 options
 Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'Nic Chagall - Get The Kicks
 Podcast 001.m4a':
   Metadata:
     major_brand     : M4A
     minor_version   : 0
     compatible_brands: M4A mp42isom
     creation_time   : 1940-02-17 09:46:08
     title           : Nic Chagall - Get The Kicks Podcast 001
     artist          : Nic Chagall
     album           : Nic Chagall - Get The Kicks
     encoder         : Podcast Maker 1.4.0 by Lemonz Dream
     description     : Episode 001
     synopsis        : Get The Kicks is broadcast live on ah.fm every
 fourth Monday of the month.
                     :
                     : For more info, visit www.nicchagall.de
     genre           : Podcast
     gapless_playback: 0
     date            : 2009-10-04T13:54:28Z
     season_number   : 0
     episode_sort    : 0
     media_type      : 0
   Duration: 01:00:16.55, start: 0.000000, bitrate: 131 kb/s
     Stream #0:0(eng): Audio: aac (mp4a / 0x6134706D), 44100 Hz, stereo,
 s16, 129 kb/s
     Metadata:
       creation_time   : 1940-02-17 09:46:08
       handler_name    : ?Apple Alias Data Handler
     Stream #0:1(eng): Subtitle: mov_text (text / 0x74786574)
     Metadata:
       creation_time   : 1940-02-17 09:46:08
       handler_name    : ?Apple Alias Data Handler
     Stream #0:2(eng): Video: mjpeg (jpeg / 0x6765706A), yuvj444p, 600x600
 [SAR 1:1 DAR 1:1], 0 kb/s, SAR 40:37 DAR 40:37, 0k fps, 0k tbr, 44100 tbn,
 44100 tbc
     Metadata:
       creation_time   : 1940-02-17 09:46:08
       handler_name    : ?Apple Alias Data Handler
     Stream #0:3(eng): Subtitle: mov_text (tx3g / 0x67337874)
     Metadata:
       creation_time   : 1940-02-17 09:46:08
       handler_name    : ?Apple Alias Data Handler
     Stream #0:4: Video: png, 90k tbr, 90k tbn, 90k tbc
 At least one output file must be specified
 }}}

-- 
Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/1559>
FFmpeg <http://ffmpeg.org>
FFmpeg issue tracker