[FFmpeg-trac] #7568(undetermined:new): Incorrect AAC file output

FFmpeg trac at avcodec.org
Mon Nov 26 19:57:24 EET 2018

#7568: Incorrect AAC file output
             Reporter:  Grabien      |                     Type:  defect
               Status:  new          |                 Priority:  normal
            Component:               |                  Version:
  undetermined                       |  unspecified
             Keywords:               |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
 Summary of the bug:

 I have MP4 file with AAC audio stream:

 Stream #0:0(und): Video: h264 (Main) (avc1 / 0x31637661), yuv420p,
 1280x720 [SAR 1:1 DAR 16:9], 1133 kb/s, 29.97 fps, 29.97 tbr, 90k tbn,
 59.94 tbc (default)
 Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo,
 fltp, 104 kb/s (default)

 Audio stream is correct, but when I try to extract it from file by FFMPEG
 it produces incorrect audio file with these parameters:

 Stream #0:0: Audio: aac (LC), 44100 Hz, stereo, fltp, 4 kb/s

 How to reproduce:
 % ffmpeg -i MP4WithAACAudio.mp4 output.aac
 ffmpeg version 4.1
 built on 2018-10-17

Ticket URL: <https://trac.ffmpeg.org/ticket/7568>
FFmpeg <https://ffmpeg.org>
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