Rotate a Video
Turn a sideways MP4 the right way up in your browser, instantly and without quality loss. Runs entirely in your browser, so your data never leaves your device.
Drop a video here, or click to browse
Up to 5 GB · never leaves your device
Output
Press Rotate video and the result appears here.
Your videos never leave this tab
Rotate a Video is JavaScript that your browser has already downloaded, and it does the whole job on your own machine. On a normal site, a 5 GB video means 5 GB uploaded, a wait in somebody's queue, and 480 MB downloaded again. Here it means 0 bytes up and 0 bytes down.
- No upload
- No file size limit
- Works offline once loaded
- Nothing stored or logged
How to use Rotate a Video
- 1. Upload the MP4 video. Drop or browse for the .mp4 file that plays sideways or upside down. Videos up to 5 GB work: the file is read in small chunks rather than loaded whole, and it never leaves your device. The tool analyzes the video and shows its duration, resolution and codec, including any rotation the file already carries.
- 2. Pick the rotation angle. Choose 90 clockwise, 180, or 90 counterclockwise. The turn is applied on top of the video's current orientation, so a clip that is already sideways ends up exactly where you point it.
- 3. Rotate and download the video. Press Rotate video. In almost every case the tool only rewrites the file's rotation flag, a lossless operation that finishes in seconds even for huge files and keeps every pixel untouched. Preview the result, then download the rotated MP4.
When to use Rotate a Video
Rotate a Video turns an MP4 by 90, 180 or 270 degrees entirely in your browser, without uploading it to any server. Because MP4 stores orientation as metadata, the rotation is usually a lossless flag rewrite rather than a slow re-encode, so even multi-gigabyte files finish in seconds.
- Fixing a sideways phone recording. Phones sometimes record with the wrong orientation flag, so the clip plays sideways on a computer or TV. A single 90 degree turn puts it upright without touching the video quality.
- Correcting an upside-down webcam or action cam clip. Cameras mounted upside down record inverted footage; rotating by 180 flips it the right way up in one step, with no re-encoding wait.
- Preparing clips for players that ignore rotation metadata. Some older players and editing tools ignore the MP4 rotation flag entirely. If the fast path cannot be applied the tool re-encodes with the pixels physically rotated, producing a file every player shows correctly.
- Keeping private footage private. Online video rotators upload your footage to their servers; this tool rewrites the file inside your browser, so personal recordings never leave your machine.
Examples
Fix a sideways phone video
Input
clip.mp4 recorded sideways + rotate 90 clockwise
Output
clip-rotated.mp4 that plays upright, finished in seconds
Flip an upside-down recording
Input
webcam.mp4 filmed upside down + rotate 180
Output
webcam-rotated.mp4 the right way up, no quality loss
About the Rotate a Video tool
Rotate a Video is a free online tool that works entirely inside your web browser. Turn a sideways MP4 the right way up in your browser, instantly and without quality loss. Because the processing happens on your own device, nothing you enter is uploaded, logged or stored anywhere.
This page is one of 12 Video utilities on EditSafely. Each one does a single job well, and all of them follow the same rule: your input stays on your machine.
You can shape the output with the Rotate by setting, and the result refreshes the moment you change it. The finished file is put together in browser memory and saved with the Download button, so it never touches a server on the way to your disk. 2 worked examples further down the page show exactly what the tool produces for real inputs.
Because nothing leaves your device, the tool is suitable for sensitive content such as internal documents, credentials or customer data. It also responds instantly, since every keystroke is handled on your own machine rather than by a remote API.
Frequently asked questions
Does Rotate a Video cost anything?
Yes, it is completely free. All 2,671 tools on EditSafely work without an account, a subscription or usage limits.
Are my files uploaded to a server?
No data leaves your device. The whole tool is JavaScript that runs inside your browser tab, so there is no upload, no server-side processing and no log of what you did. If you disconnect from the internet after the page loads, it keeps working.
Which files does Rotate a Video accept?
It accepts MP4 videos. There is no file size cap imposed by a server; very large files are limited only by your device's memory.
Do I need to sign up or install anything?
Nothing to install and no account needed. Open the page in any up-to-date browser, including on a phone or tablet, and the tool is ready.
How do I save the output?
Click the Download button once the result is ready. The file is built in your browser's memory and handed straight to your downloads folder, without passing through a server.