> If we Must encrypt the transport stream then what parts of the stream should > we leave it in the clear? Should we specifically leave the I-frames?
The Transport Stream fields (including the PCR and PID) at the start of each 188-byte Transport Stream 'packet' must all remain unencrypted. Also, the entire contents of Transport Stream PAT and PMT 'packets' must remain unencrypted. Also, the start of video I-frames - including at least the MPEG 'system code' (or 'nal_unit_type' for H.264/H.265) - must remain unencrypted. Ross Finlayson Live Networks, Inc. http://www.live555.com/
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