How to Upload to YouTube from the iMovie App on Your iPhone You can also Schedule a specific time for your video launch and you can set the video as a Premiere. If you don’t want anyone to see your video, set it to Private. If you want your video to be viable by only people with the link, set it to Unlisted. If you’re ready to go set the status to Public.
In Resolution choose the highest quality – usually HD 1080p or 4K.In the pop-up window, you can enter a title, description, and tags.Click on Export File (if you want to export just a still for creating a thumbnail, choose Save Current Frame).Click on the Share button in the top right or go to File – Share.
Options for Export File sharing from iMovie Highest Quality iMovie Settings