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• FFMPEG.wasm Cannot Add Album Cover To MP3 File

  5 juillet 2022, par Shaan Khan

  for a project I'm working on I'm trying to split a video into multiple audio clips whilst adding metadata for each individual track. Whilst doing this, whilst I've added most of the metadata including title & artist, I'm unable to add an album cover via FFMPEG.wasm. Whilst my command works fine with regular FFMPEG.wasm, I'm unable to get it to work via the webassembly version.

  


  I'm aware that my album cover is correctly being assigned via FS.readfile and that my command in theory should work, but I'm unable to figure out why it isn't working. Is this a FFMPEG.wasm limitation and if so, is there any workaround for this ?

  


  

  • Normal FFMPEG Command

  


  


  ffmpeg -i "song.mp3" -i albumCover.jpg -map 0:0 -map 1:0 -y -codec:a libmp3lame -ac 2 -ar 48000 -ab 320k -ss 00:00:00 -t 00:00:20 -id3v2_version 3  -metadata title="SongOne" -metadata album_artist="Artist Name" -metadata album="Youtube Name" -metadata track="1" "output.mp3"


  


  

  • FFMPEG WASM Implementation

  


  


    let commandArray = [
      "-i",
      "song.mp3",
      "-i",
      "albumCover.jpg",
      "-map",
      "0:0",
      "-map",
      "1:0",
      "-y",
      "-codec:a",
      "libmp3lame",
      "-ac",
      "2",
      "-ar",
      "48000",
      "-ab",
      "320k",
      "-ss",
      startTime.toString(),
    ];

    if (duration != "-1") {
      commandArray.push("-t", duration.toString());
    }

    commandArray.push(
      "-id3v2_version",
      "3",
      "-metadata",
      `title="${title}"`,
      "-metadata",
      `album_artist="${artist}`,
      "-metadata",
      `album="${albumInfo.name}"`,
      "-metadata",
      `track="1"`,
      `${timestamp.songName} - ${timestamp.artistName}.mp3`
    );


  


• ffmpeg processes pile up until they crash

  9 mars 2021, par Ultra Cookie

  I am coding a bot which streams music using ytdl and @discordjs/opus. It uses ffmpeg for that and when I end the dispatcher the process doesn't get killed. After a while this piles up and the process list looks like this :

  


  0     0 27864 27863  20   0 120348 14380 sock_a Sl+  pts/2      0:01 /root/bot/node_modules/ffmpeg-static/ffmpeg -i - -analyzeduration 0 -loglevel 0 -f s16le -ar 48000 -ac 2 pipe:1
0     0 27887     1  20   0 120104 13496 sock_a Sl+  pts/2      0:00 /root/bot/node_modules/ffmpeg-static/ffmpeg -i - -analyzeduration 0 -loglevel 0 -f s16le -ar 48000 -ac 2 pipe:1
0     0 27893     1  20   0 120040 13676 sock_a Sl+  pts/2      0:00 /root/bot/node_modules/ffmpeg-static/ffmpeg -i - -analyzeduration 0 -loglevel 0 -f s16le -ar 48000 -ac 2 pipe:1
0     0 27900     1  20   0 120048 13676 sock_a Sl+  pts/2      0:00 /root/bot/node_modules/ffmpeg-static/ffmpeg -i - -analyzeduration 0 -loglevel 0 -f s16le -ar 48000 -ac 2 pipe:1
0     0 27906     1  20   0 120048 13676 sock_a Sl+  pts/2      0:00 /root/bot/node_modules/ffmpeg-static/ffmpeg -i - -analyzeduration 0 -loglevel 0 -f s16le -ar 48000 -ac 2 pipe:1
0     0 27913     1  20   0 103740 13792 sock_a S+   pts/2      0:00 /root/bot/node_modules/ffmpeg-static/ffmpeg -i - -analyzeduration 0 -loglevel 0 -f s16le -ar 48000 -ac 2 pipe:1



  


  This is just a preview the actual list is much longer... I don't know how I can prevent this.

  


  Code that might be helpful :

  


  Play:
connection.play(ytdl(song.url, { quality: "highestaudio", highWaterMark: 1024 * 1024 * 30, type: "opus" })).on("finish", () => {play next song});

Skip:
connection.dispatcher.end();


  


• Mp3 file not showing in any media player after creating through ffmpeg

  4 mai 2019, par Aashit Shah

  Mp3 file not showing in any application after the mp3 file is saved . After 15 odd minutes it is automatically shown . if i manually change the name from file manager it will be instantly shown . How to solve this problem .

  Uri uri = MediaStore.Audio.Media.EXTERNAL_CONTENT_URI;
  
              String[] projection = {
  
                      MediaStore.Audio.Media.TITLE,
  
                      MediaStore.Audio.Media.DATA,
  
                      MediaStore.Audio.Media.DISPLAY_NAME,
  
                      MediaStore.Audio.Media.DURATION,
  
                      MediaStore.Audio.Media.ALBUM_ID
  
              };
  
              String sortOrder =  MediaStore.Audio.Media.DISPLAY_NAME
  
              Cursor c = getContentResolver().query(uri,projection,null,null,sortOrder);
  
              if(c.moveToFirst())
  
              {
  
                  do {
  
                      String title = c.getString(c.getColumnIndex(MediaStore.Audio.Media.TITLE));
  
                      String data = c.getString(c.getColumnIndex(MediaStore.Audio.Media.DATA));
  
                      String name = c.getString(c.getColumnIndex(MediaStore.Audio.Media.DISPLAY_NAME));
  
                      String duration = c.getString(c.getColumnIndex(MediaStore.Audio.Media.DURATION));
  
                      String albumid= c.getString(c.getColumnIndex(MediaStore.Audio.Media.ALBUM_ID));
  
                      Songs song = new Songs(title,data,name,duration,albumid);
  
                      songs.add(song);
  
                      title1.add(name);
  
                  }while (c.moveToNext());
  
              }

  Output file path :

   Environment.getExternalStorageDirectory()+ "/Trim"+".mp3";

  This is my command :

  "-y","-ss", start,"-i", input_path,"-t", end,"-metadata","title=Trim","-acodec", "copy","-preset", "ultrafast",output_path