On Jan 10, 2007, at 5:42 AM, Mikael Abrahamsson wrote:
On Tue, 9 Jan 2007, [EMAIL PROTECTED] wrote:
between handling 30K unicast streams, and 30K multicast streams
that each have only one or at most 2-3 viewers?
My opinion on the downside of video multicast is that if you want
it realtime your SLA figures on acceptable packet loss goes down
from fractions of a percent into the thousands of a percent, at
least with current implementations of video.
Actually, this is true with unicast as well.
This can (I think) largely be handled by a fairly moderate amount of
Forward Error Correction.
Regards
Marshall
Imagine internet multicast and having customers complain about bad
video quality and trying to chase down that last 1/100000 packet
loss that makes peoples video pixelate every 20-30 minutes, and the
video stream doesn't even originate in your network?
For multicast video to be easier to implement we need more robust
video codecs that can handle jitter and packet loss that are
currently present in networks and handled acceptably by TCP for
unicast.
--
Mikael Abrahamsson email: [EMAIL PROTECTED]
