[Live-devel] Rare 2s "delay" when viewing live streams

[Ross Finlayson]

Of course our code doesn't buffer anything for 2 seconds.  (The 'packet reordering' queue delays incoming packets for at most the 'packet reordering threshold' - which is, by default, only 100 ms - and only if packet loss occurs.)

The delay is obviously caused by the TCP implementation - i.e., in the OSs of your server and client.  This is not a bug; this is simply TCP's way of ensuring reliable data delivery, in the face of high data rates and lossy networks.  To overcome this, either send less, or stream via UDP instead of TCP. (You should stream RTP-over-TCP *only* if there's a firewall - between the server and client - that blocks UDP packets.)


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

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