Add --audio-multistreams to keep every available audio track (e.g., different languages or commentary).

The most efficient way to handle multiple streams is using the yt-dlp command-line tool . Unlike standard downloaders, it can merge all available "side" data into one file.

Use --embed-subs and --sub-langs "all" to pack all available subtitle tracks directly into the file.

To download a stream with multiple tracks (such as three different audio or subtitle streams) into a single MKV file, you typically need a tool like . MKV is the preferred container for this because it can hold an unlimited number of tracks without needing to re-encode the video. 🚀 How to Download 3+ Streams into MKV

Use MediaInfo to check if all three streams were successfully downloaded into your file. If you'd like to get started, tell me: What website or source are you trying to download from?