Wavelab Cast problem with .MOV

Hi, I can’t open or import video clips made with iPhone, i.e. with MOV extension. I can open them with VLC player or Windows Media Player, etc. Wavelab shows this: "The file cannot be opened. The format is unknown or Wavelab Cast could not find a suitable decoder on your system. (C:\Users…)
Any help much appreciated!
Cheers,
Peter