TinePlayer

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Multi-track Videos

The best way to use TinePlayer to output two tracks to separate audio devices is to use multi-track video files. These are containers like .mkv or similar that can carry many video, audio, and subtitle tracks.

Not Required. An output can play an external audio file instead, which can be used for simply playing a synchronized audio description track along with a video.

Checking What a File Has

Open it in TinePlayer and look at the Audio Track and Subtitles lists. It should list every audio track in the file along with its language and format. You can also use the --list-tracks command line argument.

Alternatively, you can use other applications like MediaInfo or VLC.

Creating MKV Files

If you have multiple versions of the same video with different soundtracks, or external audio files you want to combine with a video, you can use tools like MKVToolNix do this without re-encoding.

However, be aware that the audio from different sources may not be completely in sync with your video file. TinePlayer can automatically sync external audio files without combining them, or you can use this fork of describealign to sync and combine them together.

When adding audio tracks to an MKV, give them appropriate language and kind tags if possible so that TinePlayer can display and choose them automatically.