To get any MP4 files imported to iMovie, you will need to perform a format transcoding process. In other words, if the MP4 file is encoded with other unsupported codec, you will fail to load it into iMovie. Although iMovie has native input support for MP4 files, however, only MP4 files encoded with MPEG-4 compression codec is recognized by iMovie.

It is well known that MP4 is a multimedia container file format which can hold various different video and audio codec. And actually, it seems that just about no video files at all on my computer can be added (all greyed out)-even other MP4 files.' Why iMovie won't open MP4 files? mp4 files on my hard drive, they're all greyed out. When I select File->Import->Movies and browse to the directory where I saved all the. They open properly in QuickTime and VLC but can't be imported into iMovie (or iPhoto). For GoPro users, I used the R2 (720p) format. Specifically, I'm trying to add MP4 files that I copied to my hard drive from my GoPro HD 960.

'For some reason iMovie '11 won't let me import videos. I think I was told I needed to convert to mp4, which I did with isquint. Original clip was filmed with the movie setting on my regular digital camera as a. 'Thought I could drag and drop - but it's not working. Sometimes, you may even fail to load some of iMovie supported file formats such as MP4 into it for editing. However, the media compatiblity of iMovie is very limited, you can only load iMovie supported file formats inlcuding MPEG-4, QuickTime movie, MPEG-2, AVCHD, DV & HDV into the program. As Apple's consumer free video editing software, iMovie enables you to easily turn all your common videos into great movies by inserting titles, adding effects or creating full soundtrack with powerful tools that as simple as drag and drop.

Imovie into mp4