Resizing macOS app windows for 16:9 screen capture

I frequently need to capture a window of some Mac app for a recording (usually for my YouTube channel), and I've used a little AppleScript I wrote years ago for the purpose.

Somehow, that script (which I saved as a 'one shot' App (.app extension) that just runs then quits) got deleted off my Script Editor folder in my iCloud Drive, so I had to re-create it.

Luckily, the syntax for this operation is dead simple:

tell application "Safari"
	set bounds of front window to {0, 50, 1280, 770}
end tell

You can adjust the {X, Y, width, height} parameters accordingly—note that the width and height seem to be additive to the X/Y. So I use 770 instead of 720 for the height (720 + 50).

In Script Editor, save the file as a .app, with the option to keep it running unchecked. Now, whenever you want a window sized perfectly for capture, just press Command + Spacebar, then type in the name of the Script/App you saved, and hit enter. The top-most window in Safari will scale to exactly 720p resolution.

I have similar scripts set up for Terminal and other apps I frequently capture, so I just hit Command + Spacebar, type the name of the app I need to resize, and press enter.

I also had an earlier post describing resizing Terminal here, but that method required a bit more AppleScript that's really not necessary for my use case.

I also use an open source app, DeskPad, to put my screen in a virtual desktop monitor sometimes. It's useful when I need to record it over a long period of time, and don't want my other activity to interfere (e.g. a long-running task without my mouse flying over the screen a bunch).