Hi,
This does tend to get into the realms of fuzzy logic regarding some of this.
It is probably best if I explain with a bit of Historical background.
iChat 2 stated that the min for 1-1 Video chat was 128kbps and this basically has not changed.
The Data speeds rates we get from our ISPs has though.
Depending on Processor, the internet speed available, any capping in the iChat Preferences (or System Preferences > Quicktime in/for iChat 4 or earlier) and the speed of the Buddy will cause iChat to come up with the Pic size it is sending.
AT best it will aim for a pic 640 X 480 pixels (0.3mp) at 30fps
In most cases a MacBook Pro would do about 20fps at this size.
My G4/1Ghz dual Process manages 15fps at a smaller pic size. (on my now 5Mbps Download and at 780kbps upload).
Once you get over about 1Mbps download and at least 500kbps Upload then the natural variance in the service from the ISP can also Play a factor.
It is this that capping iChat to 500kbps helps with.
In essence you can have issues if one buddy has a fast service and the other one is really slow but do better from each to moderate speeds Buddies.
If one end is on an extremely fast service then it can be very difficult to "Balance" things as the ends iChat can think the other end is not responding when in fact they service is just that much slower and therefore haven't replied quick enough.
8:33 PM Thursday; February 23, 2012
Please, if posting Logs, do not post any Log info after the line "Binary Images for iChat"
iMac 2.5Ghz 5i 2011 (Lion 10.7.3)
G4/1GhzDual MDD (Leopard 10.5.8)
MacBookPro 2Gb (Snow Leopard 10.6.8)
Mac OS X (10.6.8),
"Limit the Logs to the Bits above Binary Images." No, Seriously
