egghead.io has a requirement that videos conform to a 1280/720 (or doubled to 2560/1440) to match the video player. But sometimes we forget to switch resolutions before we record and you put a lot of effort into a lesson only to realize the entire thing was at the wrong resolution. Screenflow allows you to switch back to "document settings" to support our resolution requirements, but it's still up to you to make sure your content fits within the fixed document settings.