id	summary	reporter	owner	description	type	status	priority	component	version	resolution	keywords	cc	blockedby	blocking	reproduced	analyzed
1737	ffmpeg detect aac stereo as mono	dmitry9		"How to reproduce:
{{{
ffprobe -v 9 -loglevel 99 ./audio_aac_stereo_as_mono.mp4
ffprobe version N-44445-ge332947 Copyright (c) 2007-2012 the FFmpeg developers
  built on Sep 14 2012 14:05:18 with gcc 4.6 (Ubuntu/Linaro 4.6.3-1ubuntu5)
  configuration: --cc='gcc -O2 -m64 -mtune=core2 -pipe' --enable-version3 --enable-libfaac --enable-libx264 --enable-pthreads --enable-gpl --enable-nonfree --enable-librtmp --enable-shared --enable-filter=movie --enable-avfilter --enable-libspeex --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libaacplus --enable-libvo-aacenc
  libavutil      51. 73.100 / 51. 73.100
  libavcodec     54. 55.100 / 54. 55.100
  libavformat    54. 27.100 / 54. 27.100
  libavdevice    54.  2.100 / 54.  2.100
  libavfilter     3. 16.103 /  3. 16.103
  libswscale      2.  1.101 /  2.  1.101
  libswresample   0. 15.100 /  0. 15.100
  libpostproc    52.  0.100 / 52.  0.100
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x17953c0] Format mov,mp4,m4a,3gp,3g2,mj2 probed with size=2048 and score=100
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x17953c0] ISO: File Type Major Brand: isom
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x17953c0] File position before avformat_find_stream_info() is 1175362
[aac @ 0x179cc60] channel element 0.0 is not allocated
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x17953c0] All info found
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x17953c0] File position after avformat_find_stream_info() is 143323
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from './audio_aac_stereo_as_mono.mp4':
  Metadata:
    major_brand     : isom
    minor_version   : 512
    compatible_brands: isomiso2avc1mp41
    title           : Teradek stream
    encoder         : Lavf54.27.100
    copyright       : Teradek
  Duration: 00:00:21.05, start: 0.000000, bitrate: 446 kb/s
    Stream #0:0(und), 41, 1/1000: Video: h264 (High) (avc1 / 0x31637661), yuv420p, 360x240 [SAR 32:27 DAR 16:9], 1/50, 407 kb/s, 23.86 fps, 25 tbr, 1k tbn, 50 tbc
    Metadata:
      handler_name    : VideoHandler
    Stream #0:1(und), 120, 1/48000: Audio: aac (mp4a / 0x6134706D), 48000 Hz, mono, s16, 32 kb/s
    Metadata:
      handler_name    : SoundHandler
[h264 @ 0x179bc00] detected 8 logical cores
[AVIOContext @ 0x179da40] Statistics: 214912 bytes read, 2 seeks
}}}

Attach log for:
{{{
ffmpeg -v 9 -loglevel 99 -i ./audio_aac_stereo_as_mono.mp4 -vcodec copy -acodec libfaac -ar 22050 -report -f mp4 /tmp/aaa3.mp4
}}}
"	defect	open	normal	avcodec	git-master		aac				1	0