thanks martie. those sessions are not videos in the common sense. also because they involve mostly "windows" or "windows screens" and no real video material (like Rocky VI, Rambo III, or game trailers). when we want to save typical screens (screenshots of a ordinary Windows application) the most appropriate FORMAT is *.gif, and not *.jpeg. VLC media player's default screenshot format is *.png (which is a lossless format) and other image processing software (Photoshop, PaintShop Pro) use their own image format. But typically, when you have a Java application (e.g. a textual email written in OpenOffice with primitive graphical objects, no photos), the image format which results in the smallest file size
is GIF.
With Elluminate i dont see any real photographical video material, so if Camastasia produces 50GB for a 3h-session, then it is the wrong software.
There are highly-specialized
screen capturing programs for your type of screens ("GIF-screens") which produce high-quality small-sized video files, see for example the
Kelby Training videos.
Apparently Kelby doesnt use stream recorders to author their videos. They use primitive screen capturing software. If you want to produce videos similar to Kelby, then ask Kelby support team (and not me

).
And to answer your question: No, Elluminate has nothing to do with video streams and therefore cant be recorded in original quality from the streaming server (because there isnt such a thing!). The only way to producing good satisfactory "videos" of your session is thru the Kelby method.
Good luck.