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ASF
ASF is a meta file format that contains the audio, video, images, and the control of the command script. -
Meta file: ASX, smil, smi
The definition of Meta file: ASX, smil, smi -
RTMPE
RTMPE which is RTMP encrypted using Adobe's own security mechanism. While the details of the implementation are proprietary, the mechanism uses industry standard cryptography primitives.