Tame huge 4K iPhone recordings
Compress 4K Video for iPhone
iPhone 4K clips can take 300MB or more per minute of footage. Shrink them into shareable MP4 files without the video ever leaving your device.
Drop a video here
Tame huge 4K iPhone recordings. MP4, MOV, and WebM are processed locally in your browser.
Your video is processed in this browser and is not uploaded to this site.
How to compress your video
- 1Drop your MP4, MOV, or WebM file into the compressor, or click to choose one.
- 2Set a target size in MB, or pick a quality preset if you have no strict limit.
- 3Click Compress video and wait while your browser encodes the file locally.
- 4Download the compressed MP4 - no watermark, and nothing was uploaded.
Recommended settings
Use a target MB when a chat app or email has a hard limit.
Balanced mode cuts most 4K clips by well over half with little visible loss.
Very large files can be slow in a browser — a desktop handles them best.
Questions
Why are iPhone 4K videos so large?
4K at 30 or 60 fps stores a huge amount of pixel data — roughly 170 to 400MB per minute depending on settings.
Will the compressed video still look sharp on a phone?
For sharing in chat and social apps, yes. Most of the size drop comes from bitrate the eye barely notices on a phone screen.