Playing a video in Quicktime

Getting Started
4

This will launch your movie with QuickTime Player, you might have to use AppleScript to get it to go full screen.

dim theMovieFile as FolderItem // I'll leave this part up to you
#if TargetMacOS then
  // Launch file with selected app
  declare function NSClassFromString Lib "Foundation" (name as CFStringRef) as Ptr
  declare function sharedApplication Lib "AppKit" Selector "sharedWorkspace" (obj As Ptr) as Ptr
  dim sharedWorkspace as ptr = sharedApplication(NSClassFromString("NSWorkspace"))

  declare function openFile Lib "AppKit" Selector "openFile:withApplication:" (id as ptr, urlString as CFStringRef, appName as CFStringRef) as Boolean
  call openFile(sharedWorkspace, theMovieFile.NativePath, "QuickTime Player")
#end