I'm doing some hacking around the IIS Smooth streaming format. Microsoft provides an SDK called "IIS Smooth Streaming Format SDK" which will enable me to contribute a libav muxer based on this SDK in a few days. the microsoft SDK has C interface, is not open source, and it is windows only. I am not aware of any licensing issues.
while the smooth streaming format should be very similar to a .mp4 file. it is centered around using 'moof' and 'mdat' atoms, along with some other microsoft-specific atoms which supposedly could be ignore for file playback. unfortunately I am not aware of any tool that can demux, parse or play these files without using IIS-webserver as intermediary. the format itself is documented in a document called "Protected Interoperable File Format (PIFF) Specification 1.0<http://go.microsoft.com/?linkid=9682897> " I think that this segmentation protocol has some interesting ideas and merits -- Aviad Rozenhek
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