Been going through quite a few converters recently, I have a media network set up and a hd with video in mkv, flash, avi divx etc.. I use tversity which is okish converting on the fly, but have different issues with poor visual and many a time mucked up sound on the ipad, our household streams to a kindle, 2 Xbox, wii, android phones, a couple of pc's & me ipad,
It's been pretty tireless converting then finding its rubbish again, only just this week found freemake, it is slower than many but the quality is superb across the board, for myself I'm not looking anywhere else... It is slow but put a few up at a time and walk away, go to work, go have a beer and forget about it, you'll not be disappointed