Create Media.js

Author: Bloby22

converters/Media.js

@@ -0,0 +1,62 @@
+const ffmpeg = require('fluent-ffmpeg');
+const ffmpegStatic = require('ffmpeg-static');
+
+ffmpeg.setFfmpegPath(ffmpegStatic);
+
+class MediaConverter {
+  convert(inputPath, outputPath, targetFormat) {
+    return new Promise((resolve, reject) => {
+      const cmd = ffmpeg(inputPath);
+
+      this._applyOptions(cmd, targetFormat);
+
+      cmd
+        .output(outputPath)
+        .on('end', resolve)
+        .on('error', err => reject(new Error(err.message)))
+        .run();
+    });
+  }
+
+  _applyOptions(cmd, targetFormat) {
+    switch (targetFormat) {
+      case 'mp3':
+        cmd.audioCodec('libmp3lame').audioBitrate('192k').noVideo();
+        break;
+      case 'wav':
+        cmd.audioCodec('pcm_s16le').noVideo();
+        break;
+      case 'flac':
+        cmd.audioCodec('flac').noVideo();
+        break;
+      case 'aac':
+        cmd.audioCodec('aac').audioBitrate('192k').noVideo();
+        break;
+      case 'ogg':
+        cmd.audioCodec('libvorbis').audioBitrate('192k').noVideo();
+        break;
+      case 'm4a':
+        cmd.audioCodec('aac').audioBitrate('192k').outputOptions('-movflags', '+faststart').noVideo();
+        break;
+      case 'mp4':
+        cmd.videoCodec('libx264').audioCodec('aac').outputOptions('-crf', '23', '-preset', 'fast', '-movflags', '+faststart');
+        break;
+      case 'avi':
+        cmd.videoCodec('libxvid').audioCodec('libmp3lame');
+        break;
+      case 'mkv':
+        cmd.videoCodec('libx264').audioCodec('aac').outputOptions('-crf', '23', '-preset', 'fast');
+        break;
+      case 'mov':
+        cmd.videoCodec('libx264').audioCodec('aac').outputOptions('-crf', '23');
+        break;
+      case 'webm':
+        cmd.videoCodec('libvpx-vp9').audioCodec('libopus').outputOptions('-crf', '30', '-b:v', '0');
+        break;
+      default:
+        throw new Error(`Unsupported media format: ${targetFormat}`);
+    }
+  }
+}
+
+module.exports = new MediaConverter();