[Mp4-tech] SYSTEMS

[Mohit Agarwal]

Hi,
Can anybody what is the Significance of Optional Descriptors
associated with a SI Table like PMT,NIT mentioned in H.222.0.
Does the word optional means its optioanl for the Broadcster to send it,
or the Broadcaster will send it,but its optional for the Receiver to Parse
it or not.
Thanks
Mohit
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