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AAC parsed format is missing duration property

See original GitHub issue

Bug description Parsed aac file is missing duration property. Using await parseFile(path, {duration: true});

{ format:
   { tagTypes: [],
     lossless: false,
     dataformat: 'ADTS/MPEG-4',
     encoder: 'AAC',
     sampleRate: 44100,
     codecProfile: 'AAC LC',
     bitrate: 127821.59375,
     numberOfChannels: 2 },
  native: undefined,
   { track: { no: null, of: null }, disk: { no: null, of: null } } }

Expected behavior I would expect to have duration property.

Audio file demonstrating the problem (

Issue Analytics

  • State:closed
  • Created 4 years ago
  • Comments:5 (3 by maintainers)

github_iconTop GitHub Comments

Borewitcommented, Jul 27, 2019

Because this issue is open since a long time I will give an update. To address this issue, to get the duration out of the ADTS file, I need to improve the MPEG/ADTS parser. Parsing ADTS files, I still experience loosing sync somewhere half way the file.

So it’s a lot of work, for a file format which is not very common. Once addressed it will be limited success (it will be slow) at most. Therefor it is not high on my priority list. Since there are not to many other issues, I may do fix it one day.

Vondrycommented, May 3, 2019

This performance issue should be definitively highlighted in docs with some related topic, that is for sure.

My app relies on the duration. So if no duration is present, i can not properly visualize progress of current track, so it makes aac more likely unusuable format. I would welcome duration property to be present anyway.

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