[SLED] helping speed up Quicktime streaming ...
blair at cc.gatech.edu
Wed Oct 10 16:15:53 PDT 2007
I assume a lot of you stream quicktime video into SL, I'm wondering
if anyone has had any luck decreasing the delay between sender and
receiver. Using a fairly straightforward setup using Quicktime
Broadcaster and a Quicktime Streaming Server, I am getting a latency
from capture in a video camera to display in Second Life of about 10
seconds, typically; I've managed to get it down to 6 or 7 seconds
fiddling around. And this is for machines on the same network.
I know that lower latency is possible, but I can't figure out how. I
bought an Elgato Turbo H.264 in the hopes it would speed up encoding,
but it doesn't appear to work with Quicktime Broadcaster.
I've also tried to use Wirecast (which I own for other reasons) and
it didn't help either (which seems obvious, since it's using all the
same software internally).
For us, this is a significant problem because we're doing augmented
reality, where the video in SL is displaying a mixture of the real
world and the SL space the avatars are standing it. I want to create
some interactive exhibits where people in the real and virtual worlds
can see themselves together in a physical space. Now, when an
avatar moves, it's 8-10 seconds before they see their avatar move in
the real world. A latency of 1-2 seconds would be more tolerable
(although still not great, but I understand that Quicktime streaming
will not reach video conferencing speeds).
Any help would be appreciated.
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