MotionShineShort answer: Keep the .mov while you edit and store it. Make an MP4 when you send it somewhere that rejects .mov, or to people on Windows, Android or a TV. Apple's Support page says Mac screen recordings are saved as .mov files, and that QuickTime Player does not export MP4. So the switch is a second step, and it can be quick.
Apple facts here come from two Apple Support pages, read on 23 October 2026: "Take screenshots or screen recordings on Mac" and "Export movies to other file formats and resolutions using QuickTime Player on Mac". Neither shows a publish date. Facts about MotionShine's converter come from its own tool page.
What MOV and MP4 actually are
Both are containers. A container is the box that holds the picture and the sound. The picture inside is compressed by a codec such as H.264 or HEVC, which is a separate choice: read H.264 vs HEVC for screen recordings. So "MOV or MP4" is about the box, not about how sharp the picture looks.
Apple's page calls the .mov format a QuickTime movie. It is Apple's own format, so Macs, iPhones and Apple's apps handle it without fuss. MP4 is the one other systems and upload forms most often ask for.
MOV vs MP4 side by side
| Question | MOV | MP4 |
|---|---|---|
| What your Mac saves | Yes, screen recordings are .mov (Apple Support) | No |
| What QuickTime Player exports | Yes, all video options are QuickTime .mov (Apple Support) | No, Apple says it does not export MP4 |
| Best on | Macs, iPhones, Apple apps | Windows, Android, TVs, upload forms |
| Picture quality | Set by the codec inside, not the box | Set by the codec inside, not the box |
The last row is why a good converter does not have to hurt quality. When the picture and sound inside are already something an MP4 can hold, a tool can copy them across as they are. MotionShine's MOV to MP4 tool page says it does exactly that when common players can open the streams, and only re-encodes a stream that would not play in an MP4.
When to keep the MOV
- You are still editing. Keep the original recording and work on a copy.
- Everyone who will watch uses a Mac or an iPhone.
- You want an archive of the exact file your Mac made.
When to make an MP4
- A website or form says "MP4 only".
- Someone on Windows says the file will not open.
- You are putting the video on a TV or a device you do not control.
How to get from MOV to MP4 on a Mac
Apple does not offer MP4 in QuickTime Player, so you need another tool.
- Open the free MOV to MP4 converter in your browser. Its page says files are converted in your browser and are not uploaded.
- Drop in the recording. One file or a batch works.
- Download the MP4.
The full walk-through, including Apple's own export, is in how to convert QuickTime to MP4 on Mac.
Can I just rename .mov to .mp4?
Apple's pages do not cover this, so there is no promise it works. Renaming only changes the name, not what is inside the file. A real converter is the safe route.
Where MotionShine fits
MotionShine is a free Mac screen recorder, made by the same person who wrote this post. It adds auto zoom on clicks and a smooth cursor, and has an editor for text, pictures, music and voice over. Free exports go up to 720p at 30 fps with no watermark and no time limit. Pro unlocks 1080p, 1440p, 4K and 60 fps. It is not for you if you only need to change a file type: use the converter above.
FAQ
Is MP4 better quality than MOV?
No. The picture quality comes from the codec and settings inside, not from the box. See the table above.
Why does my Mac save screen recordings as MOV?
Apple's Support page says screen recordings are saved as .mov files.
Can QuickTime Player save as MP4?
No. Apple's page says QuickTime Player does not export movies as MP4 videos.
Does converting MOV to MP4 lose quality?
Not when the picture and sound can be copied across unchanged. MotionShine's converter page says it does that when it can, and re-encodes only when a stream would not play in an MP4.
Which should I upload to YouTube or a client?
MP4 is the safer pick when a site or person is unknown. If you are unsure, check the site's upload rules.
