Matroska is one of the best container formats that exist at present. Its high compression ratio and its high quality make it one of the best formats available, even without taking into account the multiple options that it offers when it comes to playing video files.
DirectShow filter for Matroska
This container is capable of merging audio, video and subtitles into a single file and then allowing quick searches within the files, it has full support for metadata, chapters, selection of different subtitle files, expandable modular system and it's even capable of recovering the playback in damaged files.
And what we have here is Matroska Muxer, a DirectShow filter for the Matroska format with which it will be possible to optimize the playback of both video and audio.
Add the filter to your favorite player and start enjoying all the advantages that Matroska Muxer has to offer, with the added bonus of being totally free of charge.