Unfortunately, a number of video software tools use the Quicktime codec. Here's Adobe's contradictory response.
“native decoding of many .mov formats is available today (including uncompressed, DV, IMX, MPEG2, XDCAM, h264, JPEG, DNxHD, DNxHR, ProRes, AVCI and Cineform)”...
“Unfortunately, there are some codecs which remain dependent on QuickTime being installed on Windows, most notably Apple ProRes. We…have no estimated timeframe for native decode currently.”
Adobe isn't alone in it's misguided reliance on Quicktime for Windows. For instance, a number of Blackmagic Design products rely on Quicktime. Speaking from experience, Blackmagic's Intensity Shuttle is little more than a plastic door stop without it.