It defaults to the maximum resolution of the first clip that you import. So if you import a 720p movie first and want to export to 4k later on, you can't. You can export smaller but not larger. To export at 4K, you have to get rid of everything, import a 4k clip, and put everything back. And even then, resolutions are preset, you can't do a custom resolution.
I think “iMovie can’t upscale” is a lot more accurate then. “iMovie doesn't allow you to select the resolution” is very misleading, because it does allow you to do that.
No, it's not just about upscaling, please re-read what I wrote. iMovie can upscale. You just have to trick it into doing so, because you can't set the resolution. Also, you are limited to the 720, 1080, 4k etc. If you want to export a square movie you can't. Best option is to export from iMovie and crop it in iPhoto.
You keep saying that, but you can set the resolution though. I set the resolution every time I export from iMovie. You’re telling me it doesn’t have an option I’ve used every single time I’ve opened the app.
Your complaint is not that you can’t set the resolution, your complaint is that it doesn’t have the options you want.
Okay so how do I set the resolution of an output video to 100 x 100 in iMovie?
(The answer of course is that you cannot)
And yes, my complaint is that it doesn't have the options I want, which makes it a deficient video editor -- the same way an image editor not having history makes it deficient. I want to set arbitrary resolutions on the output video, not be relegated to 540 720 and 1080, and I don't want to have to do gymnastics to get it to upscale.
