[FFmpeg-trac] #1693(avcodec:new): AAC Scalable Sample Rate (SSR)

[FFmpeg]

#1693: AAC Scalable Sample Rate (SSR)
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             Reporter:  cehoyos     |                    Owner:
                 Type:  defect      |                   Status:  new
             Priority:  normal      |                Component:  avcodec
              Version:  git-master  |               Resolution:
             Keywords:  aac         |               Blocked By:
             Blocking:              |  Reproduced by developer:  0
Analyzed by developer:  0           |
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Comment (by dalecurtis):

 Yes, it's 20.08 seconds of audio. The duration information isn't accurate
 when you write to .aac container, if you use out.mp4 instead you'll see
 the true accurate duration:

 $ ffmpeg -i out.mp4
 ffmpeg version N-89956-gcaa4bd7a9f Copyright (c) 2000-2018 the FFmpeg
 developers
   built with clang version 6.0.0 (trunk 321529)
   configuration: --enable-shared --enable-nonfree --enable-gpl --cc=clang
 --ld=clang --enable-libfdk-aac
   libavutil      56.  7.100 / 56.  7.100
   libavcodec     58.  9.100 / 58.  9.100
   libavformat    58.  7.100 / 58.  7.100
   libavdevice    58.  0.101 / 58.  0.101
   libavfilter     7. 11.101 /  7. 11.101
   libswscale      5.  0.101 /  5.  0.101
   libswresample   3.  0.101 /  3.  0.101
   libpostproc    55.  0.100 / 55.  0.100
 Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'out.mp4':
   Metadata:
     major_brand     : isom
     minor_version   : 512
     compatible_brands: isomiso2mp41
     encoder         : Lavf58.7.100
   Duration: 00:00:20.08, start: 0.000000, bitrate: 132 kb/s
     Stream #0:0(und): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz,
 stereo, fltp, 130 kb/s (default)
     Metadata:
       handler_name    : SoundHandler
 At least one output file must be specified

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Ticket URL: <https://trac.ffmpeg.org/ticket/1693#comment:12>
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