Library for playing Matroska (.MKV) in Flash?

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Is there any library for playing MKV (matroska multimedia container) files in Flash (AS3, MXML)? I am looking for an open source or similar to open source implementation. Since my MKV file has only Theora video, I am okay even if library supports only one type of video stream.

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You can only play videos in Flash that the player natively supports. If you write or convert an actual video codec in ActionScript (or even use the C to Flash bytecode compiler) the performance will not be good enough to get acceptable video quality.

For internal purposes we implemented a Motion JPEG display within ActionScript and even though all that did was modify the headers a bit and display a series of jpeg files using mostly native code, the effective framerate was poor.

Flash player natively supports a few formats

  • On2 VP6
  • Sorenson Spark (Sorenson H.263)
  • H.264

Mostly everyone uses H264 which is the most recently added.