What are MediaEngine and MediaSession playback methods?
Or where I can read about them?
Both are part of Windows Media Foundation:
The documentation isn't great, especially in terms of explaining what either of them are or why/when you'd want to use one or the other, or why both even exist instead of just one API for using Media Foundation...
(The plugin supports both because we found some vidoes play in one but not the other, and each API has different bugs and quirks, on top of those from DirectShow, which the plugin can also use. Basically, Windows has three atrocious methods of video playback and none of them work well or are properly documented or designed. More if you count the even older APIs, but those aren't very useful and are mostly forgotten.)
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