Rotate video
Turn a clip a quarter, a half or any angle. On MP4 a quarter turn is written as the orientation flag: instant, no re-encoding, no quality lost. A free angle (to straighten a horizon) redraws the picture, with the corners in the color you pick.
Updated October 30, 2026
Options
How it works
- Drop one or more videos anywhere on this page.
- Choose 90° right, 180°, 90° left, or type any angle.
- Press Rotate video and download the result.
Phone videos that play sideways
A phone records with the sensor fixed and notes which way it was held; some players and editors ignore that note, so the clip shows lying on its side. Choose 90° right or 90° left and, for MP4, the turn is written as the orientation flag: it takes a second, nothing is re-encoded and the quality is untouched. If the player you care about still shows it wrong, tick Re-encode and the turn is drawn into the pixels, which every program then shows the same way.
Straightening a tilted horizon
Type a small angle such as 2.5 or minus 3 for a clip shot slightly crooked. The picture is redrawn, so this always re-encodes. With Grow the frame to fit nothing is cut and the uncovered corners take the background color; untick it to keep the original size and lose the corners instead. Crop video afterwards removes the colored corners for a clean result.
Time, sound and batches
A flag rotation is instant whatever the length; a re-encode takes about as long as a conversion, more on a phone. The sound is copied as it is whenever the output format can hold it. Up to 5 videos of up to 2 GB each take the same turn in one run, in the source format or MP4, WebM or MKV. Everything happens on your device, so a family video is never uploaded.
Why people use it
Free, no account
Every tool is free, with no sign-up, no e-mail address and no limit on how often you use it.
Your files stay on your device
The browser opens the file and processes it in memory, on your device. Nothing is uploaded, so nothing can be kept, leaked or looked at.
No watermark
The result is yours as it is: no watermark, no branding, no trial version.
Any device
A phone, a tablet or a computer with a current browser is enough: no app to install, no software to update.
Works offline after the first visit
The browser keeps the pages and their engines, so a tool you have opened once keeps working without a connection.
Open-source engines
The code that does the work is open-source software, named on the Licences page, running as WebAssembly in your browser.
Why it is private
Everything you type or drop here is handled by your browser, on your device. Nothing is uploaded. To verify, open your browser's developer tools, go to the Network tab, and use the tool: you will see no request carrying your data.
While a file is being processed, the counter under the result shows the page's network traffic: 0 requests and 0 B for your data.
How to check it yourself, step by step
What you can check yourself
Open your browser's developer tools on the Network tab before you drop a file: while the tool works you will see no request carrying your data, and the counter under every result shows the page's own measurement.
The site sets no cookies, so there is no cookie banner. Anonymous usage counts and error reports without file names are the only things that leave the page, as the privacy policy describes.
Every change goes through thousands of automated tests in three browser engines, including a guard that fails a test if a single byte of a file leaves the page.
Frequently asked questions
- What is the difference between the orientation flag and re-encoding?
- MP4 files carry a flag that tells players to turn the picture. Writing it is instant and keeps every pixel, and phones, browsers, VLC and most sites follow it. A few players and editors ignore it; for those, tick Re-encode and the turn is baked into the pixels.
- Why is my WebM or MKV always re-encoded?
- WebM and MKV have no orientation flag that players follow, so the picture itself is turned. Choose MP4 as the output if you want the instant, lossless way.
- Can I straighten a tilted video?
- Yes: type a small angle such as 2.5° or −3°. The frame grows to hold the turned picture and the uncovered corners take the background color; untick Grow the frame to keep the original size instead.
- What happens to the sound?
- It is copied as it is, packet for packet, whenever the output container can hold it.
- Does my video get uploaded?
- No. Everything runs in your browser, and the video never leaves your device.
- Can I rotate a video on my phone?
- Yes, in the browser. A quarter turn on an MP4 is instant even for a long clip; a free angle re-encodes, which takes longer on a phone.
- Will the rotation show on WhatsApp, Instagram or YouTube?
- Most services follow the orientation flag and many re-encode the upload anyway. If you want to be certain, tick Re-encode so the turn is in the pixels themselves.
- Does rotating reduce the quality?
- Not with the flag: every pixel is copied. Re-encoding, needed for WebM, MKV and free angles, writes the picture again at about the source's bitrate, which is hard to tell apart from the original.
- Why does the video still look sideways in one player?
- That player ignores the orientation flag. Run the clip again with Re-encode ticked and the rotated picture is stored directly, so no flag is needed.
- Can I rotate a MOV from an iPhone?
- Yes. MOV is accepted; the result comes out as MP4, which holds the same streams and plays on everything, with the quarter turn written as the flag.
Install it as an app
Chrome, Edge and Android browsers offer to install this site from the address bar or the menu; on iPhone use Share, then Add to Home Screen. It opens like an app, keeps working offline and still processes everything on your device.