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• Flutter ffmpeg can't get width and height

  26 août 2022, par user31929

  I'm trying to retrive some info like duration,width and height from videos i pick from the phone gallery. I'm using :

  


   flutter_ffmpeg: ^0.4.2


  


  this is the code i use :

  


  Future getVideoInfo(String VideoPath) async {
    bool errorResult = false;
    FlutterFFprobe fFprobe = FlutterFFprobe();
    String? duration = "0";
    String? width = "0";
    String? height = "0";
    await fFprobe.getMediaInformation(VideoPath).then((info) {
      duration = info.getAllProperties()['duration'].toString();
      width = info.getAllProperties()['width'].toString();
      height = info.getAllProperties()['height'].toString();
    }, onError: (value) {
      errorResult = true;
    }).catchError((error) {
      errorResult = true;
    });

    if (errorResult == true) {
      Map resultmap = {"width": "0", "height": "0", "duration": "0"};
      return resultmap;
    }
    Map resultmap = {"width": width, "height": height, "duration": duration};
    return resultmap;
  }


  


  According to documentation https://pub.dev/packages/flutter_ffmpeg i'm trying to retrive elements in that way :

  


  info.getAllProperties()['width'].toString();


  


  but i can retrive only duration, width and eight are always null. Values are in the getAllProperties dictionary because i can see "width=1920 and height=824" using the Vscode debugger.
There is only a difference beetween those voices and "duration" , they are grayed out by the Vscode debugger insted of duration that is "red".
Anyway, why i can't access width and eight even if they seems to be accessible ?

  


• How to change the .ts file names in side the m3u8 file

  13 août 2020, par Isuru Bandara

  Recently I am using FFmpeg for a project. I used FFmpeg to convert mp3 bitrates and other stuff. Those are working perfectly. But now I want to add mp3%2Fmusic%2F[outputN.ts] ?alt=media for every outputN.ts texts inside the m3u8 file. This my m3u8 file data structure,

  


  ---

  


  #EXTM3U

  


  #EXT-X-VERSION:3

  


  #EXT-X-TARGETDURATION:2

  


  #EXT-X-MEDIA-SEQUENCE:0

  


  #EXTINF:2.005333,

  


  'output000.ts'

  


  #EXTINF:2.005333,

  


  'output001.ts'

  


  ---

  


  For Example, Now I want to apply mp3%2Fmusic%2F and ?alt=media for every text (output000.ts,output001.ts and so on) inside this m3u8 file using windows cmd. For instance,

  


  ---

  


  #EXTINF:2.005333,

  


  mp3%2Fmusic%2Foutput000.ts ?alt=media

  


  #EXTINF:2.005333,

  


  mp3%2Fmusic%2Foutput001.ts ?alt=media

  


  ---

  


• Convert audio file using another audio file as template in ffmpeg

  3 décembre 2015, par Iulian Onofrei

  I have some .mp3 audio files, with different "configuration" like sample rate, bit rate, etc.

  For my app, one of them is working and the rest, not.

  How can I convert the rest of them using the working file’s "configuration" ?

  Metadata of two sample files :

  ~/Downloads ❯ ffmpeg -i working.mp3 -i not_working.mp3
  
  ffmpeg version 2.8.3 Copyright (c) 2000-2015 the FFmpeg developers
  
    built with Apple LLVM version 7.0.0 (clang-700.1.76)
  
    configuration: --prefix=/usr/local/Cellar/ffmpeg/2.8.3 --enable-shared --enable-pthreads --enable-gpl --enable-version3 --enable-hardcoded-tables --enable-avresample --cc=clang --host-cflags= --host-ldflags= --enable-opencl --enable-libx264 --enable-libmp3lame --enable-libvo-aacenc --enable-libxvid --enable-vda
  
    libavutil      54. 31.100 / 54. 31.100
  
    libavcodec     56. 60.100 / 56. 60.100
  
    libavformat    56. 40.101 / 56. 40.101
  
    libavdevice    56.  4.100 / 56.  4.100
  
    libavfilter     5. 40.101 /  5. 40.101
  
    libavresample   2.  1.  0 /  2.  1.  0
  
    libswscale      3.  1.101 /  3.  1.101
  
    libswresample   1.  2.101 /  1.  2.101
  
    libpostproc    53.  3.100 / 53.  3.100
  
  [mp3 @ 0x7fd2d380da00] Skipping 0 bytes of junk at 33.
  
  [mp3 @ 0x7fd2d380da00] Estimating duration from bitrate, this may be inaccurate
  
  Input #0, mp3, from 'working.mp3':
  
    Metadata:
  
      encoder         : Lavf52.64.2
  
    Duration: 00:00:00.65, start: 0.000000, bitrate: 64 kb/s
  
      Stream #0:0: Audio: mp3, 22050 Hz, mono, s16p, 64 kb/s
  
  [mp3 @ 0x7fd2d4008800] Skipping 0 bytes of junk at 417.
  
  Input #1, mp3, from 'not_working.mp3':
  
    Duration: 00:00:01.83, start: 0.025057, bitrate: 46 kb/s
  
      Stream #1:0: Audio: mp3, 44100 Hz, stereo, s16p, 46 kb/s
  
      Metadata:
  
        encoder         : LAME3.99r