Question 76768 in Flutter Question posted in
The official Flutter documentation can be found here.

How to extract audio from video using ffmpeg-kit with flutter

just extract audio from video

@override
  void initState() {
    // TODO: implement initState
    super.initState();
    getAudio();
  }

  getAudio() async {
    await FFmpegKit.execute(
            "ffmpeg -i D:/Dart and Flutter/Projects/Jmm/firebase_task/assets/videos/flutter.mp4 -q:a 0 -map a D:/Dart and Flutter/Projects/Jmm/firebase_task/assets/videos/flutter_audio.mp3")
        .then((value) async {
      var returnCode = await value.getReturnCode();
      if (ReturnCode.isSuccess(returnCode)) {
        print('succsses');
      } else {
        print('fail');
      }
    });
  }

I have no idea the how to extract an audio from video in flutter

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2

Answers


  1. Chosen as BEST ANSWER
    0 

    ByteData _video = await rootBundle.load('assets/videos/flutter.mp4');
    var path = await getApplicationDocumentsDirectory();
    var sampleVideo = "${path.path}/sample_video.mp4";
    File _avFile = await File(sampleVideo).create();
    await _avFile.writeAsBytes(_video.buffer.asUint8List());
    var sampleAudio = "${path.path}/sample_audio.mp3";
    File audioFile = await _avFile.copy(sampleAudio);

    I solve my problem with the above code snippet


  2. 0

    As per the documentation of the mentioned plugin, you can extract audio by the following way.

    import 'package:ffmpeg_kit_flutter/ffmpeg_kit.dart';

 FFmpegKit.execute('-i input.mp4 -q:a 0 -map a output.mp3').then((session) async {
   final returnCode = await session.getReturnCode();

   if (ReturnCode.isSuccess(returnCode)) {

     // SUCCESS

   } else if (ReturnCode.isCancel(returnCode)) {

     // CANCEL

   } else {

     // ERROR

   }
 });

    or even you can do it with more simple command (in execute) like:

    -i input.mp4 output.mp3

    or whatever FFmpeg command you want to execute.

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