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