[FFmpeg-trac] #662(avcodec:open): aac distrorted after transcoding (regression)

FFmpeg trac at avcodec.org
Thu Nov 17 14:18:23 CET 2011


#662: aac distrorted after transcoding (regression)
-------------------------------------+-------------------------------------
             Reporter:  mpan         |                    Owner:  michael
                 Type:  defect       |                   Status:  open
             Priority:  important    |                Component:  avcodec
              Version:  git-master   |               Resolution:
             Keywords:  aac          |               Blocked By:
  regression                         |  Reproduced by developer:  1
             Blocking:               |
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------

Comment (by cehoyos):

 {{{
 $ ffmpeg -loglevel 99 -i test.aac -t 50 out.wav
 ffmpeg version N-34938-g7cdfce4, Copyright (c) 2000-2011 the FFmpeg
 developers
   built on Nov 17 2011 14:13:00 with gcc 4.5.3
   configuration: --cc=/usr/local/gcc-4.5.3/bin/gcc
   libavutil    51. 26. 0 / 51. 26. 0
   libavcodec   53. 34. 0 / 53. 34. 0
   libavformat  53. 20. 0 / 53. 20. 0
   libavdevice  53.  4. 0 / 53.  4. 0
   libavfilter   2. 48. 1 /  2. 48. 1
   libswscale    2.  1. 0 /  2.  1. 0
 [aac @ 0x138f760] Format aac probed with size=131072 and score=50
 [aac @ 0x1395b00] err{or,}_recognition separate: 1; 1
 [aac @ 0x1395b00] err{or,}_recognition combined: 1; 1
 [aac @ 0x1395b00] Unsupported bit depth: 0
 [aac @ 0x1395b00] Input buffer exhausted before END element found
 [aac @ 0x138f760] max_analyze_duration 5000000 reached at 5015510
 [aac @ 0x138f760] Estimating duration from bitrate, this may be inaccurate
 Input #0, aac, from 'test.aac':
   Duration: 00:00:51.47, bitrate: 43 kb/s
     Stream #0:0, 110, 1/28224000: Audio: aac, 44100 Hz, 2 channels (FC),
 s16, 43 kb/s
 [pcm_s16le @ 0x13a5a00] err{or,}_recognition separate: 1; 1
 [pcm_s16le @ 0x13a5a00] err{or,}_recognition combined: 1; 1
 [aac @ 0x1395b00] err{or,}_recognition separate: 1; 1
 [aac @ 0x1395b00] err{or,}_recognition combined: 1; 1
 [aac @ 0x1395b00] Unsupported bit depth: 0
 Output #0, wav, to 'out.wav':
   Metadata:
     encoder         : Lavf53.20.0
     Stream #0:0, 0, 1/44100: Audio: pcm_s16le ([1][0][0][0] / 0x0001),
 44100 Hz, 2 channels, s16, 1411 kb/s
 Stream mapping:
   Stream #0:0 -> #0:0 (aac -> pcm_s16le)
 Press [q] to stop, [?] for help
 [aac @ 0x1395b00] Input buffer exhausted before END element found
 Error while decoding stream #0:0
 size=    8608kB time=00:00:49.96 bitrate=1411.2kbits/s
 video:0kB audio:8608kB global headers:0kB muxing overhead 0.000522%
 }}}

-- 
Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/662#comment:3>
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