alt Hacker NewsI just had a problem installing iMovie on a MacOS 14 - 11-year old MBP13, perfectly functional otherwise (my 10-year old kid uses it), the original iMovie that used to work earlier, just stopped launching (maybe I need to change some xattrs for it?), and the new iMovie from the App Store can't be installed on such an old OS (why not show the older version there, like iOS AppStore does on older OSes?)...
I had a similar hunt for iMovie to extract video off of MiniDV which required some FireWire to thunderbolt cables. In any event I did find the install on archive.org. May have what you want.