# Membrane Matroska Plugin

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Membrane plugin for muxing and demuxing files in the [Matroska]( format.

It is part of [Membrane Multimedia Framework](

- Both muxer and demuxer support tracks encoded with VP8, VP9, H264 and Opus.
- Opus tracks with more than 2 channels are not supported.
- Demuxing of files containing [laced]( frames is not supported.
- Passing tag values is not supported

## Installation

The package can be installed by adding `membrane_matroska_plugin` to your list of dependencies in `mix.exs`:

def deps do
    {:membrane_matroska_plugin, "~> 0.3.1"}

## Usage

### `Membrane.Matroska.Muxer`
Matroska muxer requires a sink that can handle `Membrane.File.SeekEvent`, e.g. `Membrane.File.Sink`.
For an example of muxing streams to a regular matroska file, refer to [`examples/muxer_h264.exs`](examples/muxer_h264.exs).

To run the example, you can use the following command:
elixir examples/muxer_h264.exs

### `Membrane.Matroska.Demuxer`
For an example of demuxing streams, refer to [`examples/demuxer_h264.exs`](examples/demuxer_h264.exs). 

To run the example, use the following command:
elixir examples/demuxer_h264.exs

You can expect `demuxing_output` folder to appear and contain an audio file `2.ogg` and a video file `1.h264`.

## Copyright and License

Copyright 2022, [Software Mansion](

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Licensed under the [Apache License, Version 2.0](LICENSE)