If our content is purely a PNG image animated within iScreensaver, will the users still need the screensaver to be rendered by QuickTime or WebKit? (We are seeing if we can leave any of the System Requirements off of the description for our users.)
PNGs would be rendered by OpenGL, so you don’t need quicktime. However, on Macs quicktime is built in, so it’s pretty much guaranteed to be there. The max quicktime version on 10.4.11 is 7.6.