Use MP4 to MOV - free
Frequently asked questions
Does this re-encode the video?
No. MP4 and MOV share the same underlying codecs, so this just repackages the file into a new container, which is fast and lossless.
Will the file size change much?
Only slightly, since the video and audio data itself is unchanged; just the container format differs.
Does this work with any MP4 file?
It works with standard H.264/AAC MP4 files, which covers the vast majority of MP4s in the wild.