Draft: rtspsrc: Ignore 0 seqbase RTP-Info parameter

Closed Philippe Normand requested to merge philn/gstreamer:rtsp-seqbase into main

Passing a 0 initial sequence number down to rtpjitterbuffer will potentially make it drop packets until the sequence number wraps around, which can take a variable amount of time, delaying pre-rolling. Some camera brands such as Angekis do advertise a 0 seqbase in their RTP-Info. RFC 2326 doesn't mention that 0 is a valid seqbase value either.

Edited by Philippe Normand

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