Recent videos

While I don’t have as much time to devote to YouTube videos as I’d like, here are a few of my more recent ones:

And if you have more time, here they all are!

I should also mention that I do shoot and edit video professionally too, so if you have an event you’d like to document or a presentation you’d like recorded, check out some of my work at, and contact me via iain.a [at]

Quartz Composer .qtz files working as screensavers on macOS Mojave

If you’ve upgraded to macOS Mojave (10.14) and been disappointed that your collection of .qtz screen savers stopped working, it’s good to know that you can get them working again for just a few dollars.

One of my Quartz Composer compositions
One of my Quartz Composer compositions

The app you’ll need is called Backgrounds, and it’s on the Mac App Store. This app lets you use Quartz Composer files as not only screen savers, but as desktop wallpaper as well. The developer has been responsive by email, and I’ve not had any problems.

Note: This is not a paid post! Also, a competing app (Mach Desktop 4K)  claimed to do the same thing, but didn’t work properly for me.