[Live-devel] Trick play

[Ross Finlayson]

> We have been checking the trick play with the Live555 Server. We found that when doing the FFW or REW, The PID values of the stream id, PMT and Video Elementary Stream are changed to different values.

Strictly speaking, the trick play mechanism isn't 'changing' the PID, because it's not reusing the original Transport Stream.  Instead, it is creating a whole new Transport Stream, using only the video content that appeared in the original Transport Stream.  Therefore - as a whole new Transport Stream - the 'trick play' stream uses its own PIDs, which have no relationship to whatever PIDs happened to have been in the original.

This should not be a problem, because the new 'trick play' transport stream has proper PAT and PMT tables, and therefore compliant receivers should have no problem playing it.


>  Can we revert it to the original PID values.

No.  This would be non-trivial to do, and there are no plans to do so.


Ross Finlayson
Live Networks, Inc.
http://www.live555.com/

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