Josh Centers, TidBITS:

We’ve been trying to incorporate screencasts into more of our articles here at TidBITS—there are times when a short video conveys some point better than any number of screenshots. As far as tools go, ScreenFlow is the gold standard, but QuickTime Player can record screen actions and iMovie is a decent video editor. And both come with all Macs for free, so that’s where we’re starting.

But I recently stumbled across an infuriating problem: no matter what I did with my original screen recordings, I couldn’t use File > Share > File in iMovie to save a video file at a resolution higher than 720p.

Solid detective work by Josh Centers, as he works out a kludge to get a better iMovie resolution. But even better, his bit of hackery stuck and he now has reset the default iMovie resolution to something much more usable.

Even if you don’t use iMovie, you never know when the need will arise. Take a read through this, just to get a sense of the technique.

And:

I don’t want to sound ungrateful, since iMovie is an impressive tool to be bundled with the Mac for free, but hacks like this shouldn’t be necessary.

Yup.