I find that Bandicam is a fairly good, easy-to-use video recording program for Mugen. (your videos will have a Bandicam watermark if you're using the free version, but I doubt that anyone here cares about that)
One thing I would want changed, however, would be to have some of the foreground objects, especially the aquarium and the kimchi, moved so that they're behind the fighters instead. (or perhaps even given a transparent effect) As it is, the fighters are almost completely covered up and would have a hard time reading each-other's moves for most of the fight.
UPDATE: I made a simple edit to show how I would prefer this stage to be
(don't worry, I won't release it without your permission)