How to get audio duration in dart (not flutter)?-CodePudding

I need to get audio duration (from file and url) in the dart package (NOT IN FLUTTER APP).

When I am trying to use packages from the pub.dev (like just_audio or similar) I receive an error like next:

/.flutter/packages/flutter/lib/src/services/binary_messenger.dart:6:8: Error: Not found: 'dart:ui'

So do you know the way how to get the duration in pure dart?

CodePudding user response：

If you want to work only with mp3 files, you are lucky and you can use this package: mp3_info: ^0.2.0.

Code example:

  //url
  var url = Uri.parse('https://some_path/file.mp3');
  var response = await http.get(url);

  final mp3 = MP3Processor.fromBytes(response.bodyBytes);

  //file
  // final mp3 = MP3Processor.fromFile(File('path_to_file'));

  print(mp3.bitrate);
  print(mp3.duration);

But if you need to work with other formats, you have to parse the file's byte data according to audio formats specs... or you can try to find some c/c libraries and use them through ffi.