Are people really bothered by this? Matroska is hardly new and is well-supported in modern media players. It is also free open-source software, and technologically equivalent or even superior to MP4.<p>MP4 on the other hand is patent-encumbered, and supports DRM — not things people who take a radically different stance on intellectual property tend to appreciate.<p>But all that has nothing to do with the actual encoding of video. Matroska is a container format, so if you have an MP4 and a MKV video file encoded with the same audio and video codecs, you get the same quality. From what I understand from Matroska, it has better support and flexibility for including additional resources such as subtitles.<p>So what kind of ancient media player are people using that makes this switch relevant to them at all?