New submission from Michael N. Pritula <prit...@yandex-team.ru>:

Hi.
I have file with 32kHz mono AAC. FFmpeg r11872 successfully converts it, FFmpeg
r18021 misinterprets stream as 16-channel 16kHz, FFmpeg r19476 successfully
converts it, and now FFmpeg r20544 misinterprets it again.
Here is full output of FFmpeg r20544:
$ ./ffmpeg -i aac-32kHz aac-32kHz.mpg
FFmpeg version SVN-r20544, Copyright (c) 2000-2009 Fabrice Bellard, et al.
  built on Nov 20 2009 15:53:10 with gcc 4.1.2 20061115 (prerelease) (Debian
4.1.1-21)
  configuration: 
  libavutil     50. 4. 0 / 50. 4. 0
  libavcodec    52.41. 0 / 52.41. 0
  libavformat   52.39. 2 / 52.39. 2
  libavdevice   52. 2. 0 / 52. 2. 0
  libswscale     0. 7. 1 /  0. 7. 1
[mpeg4 @ 0x8a268e0]warning: first frame is no keyframe
[mpeg4 @ 0x8a268e0]ac-tex damaged at 5 6
[mpeg4 @ 0x8a268e0]Error at MB: 131
[mpeg4 @ 0x8a268e0]concealing 224 DC, 224 AC, 224 MV errors
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'aac-32kHz':
  Duration: 00:00:58.04, start: 0.000000, bitrate: 388 kb/s
    Stream #0.0(jpn): Video: mpeg4, yuv420p, 320x240 [PAR 1:1 DAR 4:3], 353
kb/s, 30 tbr, 1k tbn, 30 tbc
    Stream #0.1(jpn): Audio: aac, 16000 Hz, 1 channels, s16, 31 kb/s
  Metadata
    major_brand     : 3gp5
    minor_version   : 512
    compatible_brands: vfj13gp43gp5mp42emp 
Output #0, mpeg, to 'aac-32kHz.mpg':
    Stream #0.0(jpn): Video: mpeg1video, yuv420p, 320x240 [PAR 1:1 DAR 4:3],
q=2-31, 200 kb/s, 90k tbn, 30 tbc
    Stream #0.1(jpn): Audio: mp2, 16000 Hz, 1 channels, s16, 64 kb/s
Stream mapping:
  Stream #0.0 -> #0.0
  Stream #0.1 -> #0.1
Press [q] to stop encoding
[aac @ 0x8a2a000]channel element 3.7 is not allocated
Error while decoding stream #0.1
[aac @ 0x8a2a000]Sample rate index in program config element does not match the
sample rate index configured by the container.
Resampling with input channels greater than 2 unsupported.
Can not resample 16 channels @ 16000 Hz to 1 channels @ 16000 Hz
File 'aac-32kHz' not attached - you can download it from 
https://roundup.ffmpeg.org/roundup/ffmpeg/file618.

----------
files: aac-32kHz
messages: 7958
priority: normal
status: new
substatus: new
title: AAC misinterpreting 32kHz mono as 16-channel 16kHz
type: bug

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FFmpeg issue tracker <iss...@roundup.ffmpeg.org>
<https://roundup.ffmpeg.org/roundup/ffmpeg/issue1562>
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