Export your custom resolution video by setting the resolution in CapCut's export menu, not in the project settings

CapCut lets you export at any resolution you want, regardless of what resolution you used while editing. Open your finished project, tap the export button (usually an arrow or share icon), and you will see resolution options in the export menu. Select custom resolution or custom, then enter your width and height in pixels. CapCut will render and save the video at exactly those dimensions.

The key difference: your project resolution (what you see while editing) and your export resolution (what gets saved) are separate settings. You can edit at 1080p but export at 720p, or edit at 720p and export at 4K. This flexibility matters because exporting at a different resolution than your project uses takes longer to process but gives you the file size or quality you actually need.

Key Takeaways

  • Custom resolution export is found in CapCut's export or share menu, not in project settings.
  • Enter width and height in pixels — common options are 1920×1080 (1080p), 1280×720 (720p), and 3840×2160 (4K).
  • Exporting at a lower resolution than your project uses reduces file size; exporting higher increases it and takes longer to render.
  • CapCut will letterbox (add black bars) or crop your video if the custom resolution does not match your project's aspect ratio.

Where to find the custom resolution option

The export menu location depends on whether you are using CapCut on mobile or desktop. On mobile (iOS or Android), finish editing your video, then tap the checkmark or next button at the bottom right. This opens the export screen. Look for a button labeled export, save, or a resolution number like 1080p. Tap it to see resolution choices.

On desktop (Windows or Mac), click Export in the top menu bar. A panel will open on the right side showing resolution options. Both versions show preset resolutions (720p, 1080p, 4K) and a custom option. Tap or click custom to enter your own width and height.

Entering your custom width and height

Once you select custom resolution, CapCut shows two input fields: one for width (horizontal pixels) and one for height (vertical pixels). Type the numbers you need. Common resolutions are 1920×1080 (standard HD), 1280×720 (smaller file, faster upload), 3840×2160 (4K), and 1080×1920 (vertical video for mobile or TikTok).

The numbers must be whole numbers — CapCut will not accept decimals. If you are exporting for a specific platform, check that platform's recommended resolution first. YouTube accepts up to 4K (3840×2160). Instagram and TikTok work best at 1080×1920 (vertical). Smaller resolutions like 640×480 work but produce noticeably lower quality.

How aspect ratio affects your export

Your project has an aspect ratio — the relationship between width and height. If your project is 16:9 (widescreen) but you export at a square resolution like 1080×1080, CapCut will either add black bars on the sides (letterboxing) or crop the edges to fit. You can usually choose which before exporting.

To avoid this, match your export aspect ratio to your project. If your project is 1920×1080 (16:9), export at another 16:9 resolution like 1280×720 or 3840×2160. If your project is 1080×1920 (9:16, vertical), export at another 9:16 size. CapCut will show you a preview of how the video will look before you confirm the export.

File size and export time at different resolutions

Lower resolutions create smaller files and export faster. A 5-minute video at 720p might be 200 to 400 MB and take 2 to 5 minutes to export. The same video at 1080p might be 500 MB to 1 GB and take 5 to 10 minutes. At 4K, expect 2 to 4 GB and 15 to 30 minutes or longer, depending on your device.

If you are uploading to the internet, a smaller file saves bandwidth and uploads faster. If you are saving for archive or printing, higher resolution preserves more detail. Most phones and tablets display 1080p clearly; anything higher is usually not noticeable on a small screen. Choose the resolution that matches how you will actually use the video.

Troubleshooting common export problems

If CapCut will not let you enter a custom resolution, check that you have tapped the custom option, not a preset. Some older versions of CapCut have the custom option in a different menu — look for a settings icon or a dropdown arrow next to the resolution display.

If your exported video looks stretched or squashed, the aspect ratio did not match. Go back and export again, this time choosing to letterbox (add bars) rather than crop, or change your custom resolution to match your project's aspect ratio. If the export fails or gets stuck, close CapCut completely and restart it, then try again with a lower resolution to test whether your device is running out of storage or memory.

Frequently Asked Questions

Can I export at a resolution higher than my project resolution?

Yes. CapCut will upscale your video, but the quality will not improve — you will just get a larger file. Exporting a 720p project at 4K makes the file bigger without making the video look sharper. Export at your project resolution or lower for the best balance of quality and file size.

What resolution should I use for TikTok or Instagram?

TikTok and Instagram both work best with vertical video at 1080×1920 (9:16 aspect ratio). This fills the phone screen without letterboxing. If your project is already vertical, export at 1080×1920. If it is horizontal, you will see black bars on the sides unless you crop.

Why is my exported video taking so long?

Higher resolutions and longer videos take longer to export. A 4K export of a 10-minute video can take 30 minutes or more. Close other apps to free up memory, and make sure your device has enough storage space. Exporting at a lower resolution will finish much faster if you are in a hurry.

Does custom resolution affect the quality of my video?

Exporting at a lower resolution than your project reduces quality slightly because CapCut removes pixels. Exporting at a higher resolution does not improve quality — it just makes the file bigger. The best quality comes from exporting at or near your project's native resolution.

Can I export the same video at multiple resolutions?

Yes. After you export once, go back to the export menu and choose a different custom resolution, then export again. CapCut will create a second file. This is useful if you need one version for YouTube (1080p) and another for mobile (720p).