AAC decoding shows warnings

[Carl Eugen Hoyos]

Decoding the sample test.ts from ticket #3361 prints warnings since 55d592f7d9847a22b594ebe413508d1f77a13ed6

$ ffmpeg -i test.ts -f null -
ffmpeg version N-67644-gb186b71 Copyright (c) 2000-2014 the FFmpeg developers
  built on Nov 14 2014 08:54:57 with gcc 4.7 (SUSE Linux)
  configuration: --enable-gpl
  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
Input #0, mpegts, from 'test.ts':
  Duration: 00:01:25.40, start: 1.400000, bitrate: 73 kb/s
  Program 1
    Metadata:
      service_name    : Service01
      service_provider: FFmpeg
    Stream #0:0[0x100]: Audio: aac (HE-AACv2) ([15][0][0][0] / 0x000F), 44100 Hz, stereo, fltp, 70 kb/s
Output #0, null, to 'pipe:':
  Metadata:
    encoder         : Lavf56.12.103
    Stream #0:0: Audio: pcm_s16le, 44100 Hz, stereo, s16, 1411 kb/s
    Metadata:
      encoder         : Lavc56.12.100 pcm_s16le
Stream mapping:
  Stream #0:0 -> #0:0 (aac (native) -> pcm_s16le (native))
Press [q] to stop, [?] for help
[aac @ 0x36b3360] ChannelElement 1.0 missing
    Last message repeated 1843 times
size=N/A time=00:01:25.63 bitrate=N/A
video:0kB audio:14752kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: unknown

[Carl Eugen Hoyos]

Iirc, this is related to ticket #4084.

[Christian Ebert]

Confirming that the warning has gone, I guess since ​http://git.videolan.org/?p=ffmpeg.git;a=commit;h=5fe026f2bda68a129d70b9609c4902917db9ca2e

The channel count is still wrong, but I assume there is no solution for ​https://trac.ffmpeg.org/ticket/3361