usage align: Cross-correlate media files using their audio tracks final result = await AlignMedia.align([path1, path2]); See the reference for the fields of AlignResult. replaceAudio: Replace the audio track in a video with a given audio, auto-align await AlignMedia.replaceAudio( audioPath: 'audio.mp3', videoPath: 'video.mov', outputPath: 'replaced.mov', );