This involves some tweaks that might have some effects on the overall quality of your video.īefore getting into how an MP4 export from iMovie can impact your video’s quality, let’s look at how to do it. Technically, iMovie won’t let you select one, but you can always export in MP4 if you want. Unfortunately, there is no way to select what file format you want the video to be, or is there? Instagram will let you upload files with the MP4 file extension almost every time, but files with the iMovie MOV file extension are less supported. Unless you convert the video to something that Instagram can decode, the problem will persist. i Movie files automatically save with a file extension that Instagram doesn’t support. The primary reason this happens is quite simple. When you send an iMovie to your iPhone, however, it doesn’t save to an accessible location for Instagram. You can only create iMovie videos on your Mac, and you can only post to your Instagram on your smartphone. How Do You Size an iMovie for Instagram?.Make adjustments to force iMovie to export as MP4.

Click on the Share button to export the files.

Imovie export mp4