Learning About Blender


My Work


I found the solution: when you choose the H264 option from "Preset" AVI and 
a couple of other options are offered. If you then change to Quicktime 
(under "Format") those other AVI options remain in the menu - the don't 
appear if you select H264 from the "Format" menu directly... Under those 
other AVI options there is one (flags:loop) that causes the problem, 
disabling solves it.

Video editing with Blender