[FFmpeg-trac] #3361(avcodec:new): aac_he mono not recogized (reported as stereo)

FFmpeg trac at avcodec.org
Fri Nov 14 02:00:54 CET 2014


#3361: aac_he mono not recogized (reported as stereo)
-------------------------------------+-------------------------------------
             Reporter:  blacktrash   |                    Owner:
                 Type:  defect       |                   Status:  new
             Priority:  important    |                Component:  avcodec
              Version:  git-master   |               Resolution:
             Keywords:  aac          |               Blocked By:
  regression                         |  Reproduced by developer:  0
             Blocking:               |
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------

Comment (by blacktrash):

 Attached test.ts created with:
 {{{
 $ ffmpeg -i 03-ThreeJollyHuntsmen.wav -c:a libfdk_aac -profile:a aac_he
 -b:a 64k -ac 1 test.ts
 ffmpeg version N-67514-g7656c4c Copyright (c) 2000-2014 the FFmpeg
 developers
   built on Nov 10 2014 20:00:06 with Apple LLVM version 6.0
 (clang-600.0.54) (based on LLVM 3.5svn)
   configuration: --enable-gpl --enable-version3 --enable-nonfree
 --disable-ffserver --enable-shared --enable-libfdk-aac --enable-libx265
 --enable-libx264 --enable-libxvid --enable-libfaac --enable-libmp3lame
 --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libvidstab
 --extra-cflags=-I/sw/include --extra-libs=-L/sw/lib
   libavutil      54. 11.100 / 54. 11.100
   libavcodec     56. 12.100 / 56. 12.100
   libavformat    56. 12.103 / 56. 12.103
   libavdevice    56.  2.100 / 56.  2.100
   libavfilter     5.  2.103 /  5.  2.103
   libswscale      3.  1.101 /  3.  1.101
   libswresample   1.  1.100 /  1.  1.100
   libpostproc    53.  3.100 / 53.  3.100
 Guessed Channel Layout for  Input Stream #0.0 : stereo
 Input #0, wav, from '03-ThreeJollyHuntsmen.wav':
   Duration: 00:01:25.52, bitrate: 1411 kb/s
     Stream #0:0: Audio: pcm_s16le ([1][0][0][0] / 0x0001), 44100 Hz, 2
 channels, s16, 1411 kb/s
 Output #0, mpegts, to 'test.ts':
   Metadata:
     encoder         : Lavf56.12.103
     Stream #0:0: Audio: aac (libfdk_aac) (HE-AAC), 44100 Hz, mono, s16, 64
 kb/s
     Metadata:
       encoder         : Lavc56.12.100 libfdk_aac
 Stream mapping:
   Stream #0:0 -> #0:0 (pcm_s16le (native) -> aac (libfdk_aac))
 Press [q] to stop, [?] for help
 size=     761kB time=00:01:25.52 bitrate=  72.9kbits/s
 video:0kB audio:669kB subtitle:0kB other streams:0kB global headers:0kB
 muxing overhead: 13.774409%
 }}}

--
Ticket URL: <https://trac.ffmpeg.org/ticket/3361#comment:18>
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