MP4 vs MOV: Which Format for Screen Recordings?

In MP4 vs MOV for screen recordings, export MP4 with H.264 when you'll share the video. It plays in virtually every browser, chat app and operating system. Choose MOV when the file stays on Macs or goes to a video editor, especially MOV with HEVC, which gives smaller files at the same quality.

MP4 and MOV are only wrappers. The codec inside the file decides most of the compatibility and file size, so the real choice is usually H.264 or HEVC.

MP4 vs MOV at a glance

The table compares the two most common pairings for Mac screen recordings.

If you don't know who will watch the video or on what device, use MP4 with H.264.

MP4 and MOV are containers

A video file has two layers:

• The container (.mp4, .mov). It holds the video track, audio track and metadata, and records how they line up in time.
• The codec (H.264, HEVC, ProRes, AAC). This is how the picture and sound are compressed inside the container.

MOV is Apple's QuickTime file format. MP4 (MPEG-4 Part 14) is an international standard based on the QuickTime format, so the two are built in a very similar way. Both can carry H.264 or HEVC video and AAC audio. MOV is also the usual home for professional codecs such as Apple ProRes, which is one reason Mac video editors often work in MOV.

So an H.264 video in a .mov and the same H.264 video in a .mp4 look identical. Only the wrapper differs.

macOS defaults to MOV. Recordings from the Screenshot toolbar (⇧⌘5, Command-Shift-5) and QuickTime Player are saved as .mov files, which is why most Mac screen recordings start out as MOV. Screen Bolt does the same during capture: the raw recording is H.264 in a .mov with 48 kHz stereo audio, stored as recording.mov inside the project. You pick the final format when you export. If you can't find a recording, see where screen recordings go on a Mac.

The codec matters more: H.264 vs HEVC

• H.264 (also called AVC) is the older, near-universal codec. Practically every browser, phone, TV, chat app and video platform can decode it.
• HEVC (also called H.265) is newer and more efficient. It keeps the same visual quality at a lower bitrate, so files are smaller. It takes more work to decode, and older devices, some browsers and some Windows setups can't play it without extra support.

When a MOV won't play on someone else's machine, the codec is the usual suspect, not the container. An H.264 MOV plays in most places an H.264 MP4 does, though MP4 is still the safer container for web pages. An HEVC file, in either container, is the one more likely to fail.

For more on the two codecs, see H.264 vs HEVC for screen recordings.

Compatibility: Slack, YouTube, Windows, browsers

• Web pages and embeds. H.264 in MP4 is the safe choice for a video on a landing page or in docs. HEVC playback in browsers depends on the browser, the operating system and the hardware. Safari on a Mac plays it, but not every visitor uses Safari.
• Windows. H.264 MP4 plays in the built-in Windows player. HEVC often needs Microsoft's HEVC Video Extensions from the Microsoft Store. Colleagues without it may see an error or a blank video.
• Slack, Teams, email and Notion. These accept almost any file as an upload. Whether it plays inline depends on whether the viewer's app or browser can decode it. H.264 MP4 is the format least likely to end up as a download-only attachment.
• YouTube. YouTube accepts both MOV and MP4 and re-encodes every upload. Its recommended upload settings are MP4 with H.264 video and AAC audio. The container matters little here, so upload at the highest resolution and bitrate you have.
• LinkedIn, X and other social platforms. Each publishes its own list of accepted formats, and those lists change. H.264 MP4 is the common denominator. For resolution and frame rate per platform, see screen recording settings for YouTube, X and LinkedIn.
• Video editors on the Mac. MOV with H.264 or HEVC opens fine in Mac editors, and MOV is the natural format to hand to someone who will cut the video further.

MOV vs MP4 quality and file size

The container has no effect on quality. A .mov is not sharper than a .mp4. What you see depends on:

• Codec. HEVC needs fewer bits than H.264 for the same quality.
• Bitrate. Screen recordings are mostly sharp text and flat color. Too low a bitrate shows up first as soft or smeared text, especially while scrolling or during zooms.
• Resolution and frame rate. A 4K frame (3840×2160) has four times the pixels of a 1080p frame (1920×1080), and 60 fps has twice as many frames as 30 fps. Both raise file size at a given quality.

Re-encoding counts too. Every time you convert and re-compress a file (MOV to MP4 or the other way), you lose a little detail. If you need both formats, export each from the original project instead of converting one export into the other.

To estimate a file size before exporting, use our video file size calculator. For high-resolution captures, see how to screen record in 4K on Mac.

Which to export from a Mac screen recorder

Pick MP4 (H.264) if:

• The video goes into Slack, email, a ticket, a help center or a web page.
• Anyone watching might be on Windows, Android or an older device.
• You're uploading to a social platform and want the format it expects.

Pick MOV (HEVC) if:

• You're archiving recordings and want them to take less disk space.
• Everyone watching uses recent Apple devices.
• You're handing the file to an editor on a Mac.

When unsure, export MP4. A slightly larger file is a smaller problem than a video your viewer can't open.

In the built-in Mac tools

The Screenshot toolbar and QuickTime Player save .mov files and offer no MP4 option. For sharing between Macs that's usually fine. If you need an MP4 for a web page or a mixed audience, you'll have to convert the file or record with an app that exports MP4 directly. Our QuickTime screen recording guide covers what the built-in recorder can and can't do.

In Screen Bolt

In Screen Bolt, format and codec come as a pair: MP4 always uses H.264 and MOV always uses HEVC. Choosing the format is also choosing the codec.

1. In the editor, click Export in the toolbar.
2. Under Format, choose MP4 or MOV.
3. Under Quality, choose Original, 4K, 1080p or 720p. Presets larger than your recording are disabled.
4. Check the size estimate in the summary line (it's accurate to within about ±30%).
5. Under Save to, click Change… if you don't want the default Desktop folder.
6. Click Export, or press Return. Details that affect the result:

• Bitrate. Settings ▸ Quick export ▸ Compression (Studio, Social Media, Web, Web (Low); default Social Media) sets the bitrate for both formats. At the same setting, HEVC gets a lower base bitrate than H.264 (about 3 bits per pixel against about 5), which is why MOV exports come out smaller.
• Frame rate. Settings ▸ Quick export ▸ Frame rate (30 or 60 FPS, default 60) applies to recording and export.
• Audio. Both formats export AAC audio at 48 kHz stereo, 128 kb/s.
• The Share button. It sends the raw, unedited recording.mov through the macOS share sheet. To share your edits, export first and send the exported file.
• Quick export. The Quick export settings list only MP4 and GIF, and quick exports are saved inside the project package rather than the Desktop. For a MOV, use the editor's Export sheet.
• Free version. MP4 and MOV are both available. Exports are limited to 720p and 3 minutes and carry a watermark; GIF export needs Pro.

The export documentation lists every option. You can download Screen Bolt free and export both formats to compare them on your own recordings.

FAQ

Is MOV better quality than MP4?

No. Quality comes from the codec, bitrate and resolution, not the container. A MOV looks better than an MP4 only if it was encoded with more data or a more efficient codec.

Can I rename a .mov file to .mp4?

Renaming changes the extension, not the contents. It sometimes plays anyway because the formats are so similar, but it isn't a reliable fix. Export or save a real MP4 instead.

Why won't my MOV play for someone on Windows?

The usual cause is the HEVC codec, not the MOV container. Send an H.264 MP4, or ask them to install Microsoft's HEVC Video Extensions.

Does it matter which format I upload to YouTube?

Not much. YouTube re-encodes every upload. Send the highest-quality file you have, and use MP4 with H.264 to match YouTube's recommended settings.