Hi,
me (V9.0) works's synonymous with the mov format directly from the Cam -
only jerky's powerful rendering and runs from RAM
about.
Got it already with DNxHD tried?
http://forum.slashcam.de/endlich-gelost-eos-550d-full-hd-videos-flussig-auf-altem-pc-bearbeiten-vp464405.html?highlight = # 464 405