Rotate a video 90 degrees
A quarter turn to the right is preselected. Pick 90° left if the top should go the other way: the preview shows the result before anything is written.
Your file never leaves this device. Everything runs in your browser.
How it works
- Drop your video.
- Pick a turn or a mirror and check the preview.
- Press Rotate and download the video.
Questions
Which way is 90° right?
Clockwise: the top of the picture moves to the right-hand side. If your video lies on its left side, with its top at the left, turn it 90° right. If its top is at the right, turn it 90° left.
What happens to the size?
Width and height swap: a 1920 × 1080 video comes back playing at 1080 × 1920. In an MP4 or a MOV the pixels themselves are untouched; only the flag changes.
Does rotating lose quality?
Not for an MP4 or a MOV. A turn only changes the rotation flag, the setting that tells a player which way up to show the video, and every frame is copied as it was. A mirror, or a turn of a WebM or an MKV, is re-encoded to H.264 at high quality.
Why is a turn so fast?
Because nothing is decoded. Phones record what the camera sensor sees and store which way up it goes as a flag, and this tool rewrites that flag. A file of any length takes seconds.
Why is a mirror re-encoded?
A mirror is drawn into every frame rather than written as a flag, so it looks the same in every player and every app you upload to. That takes a re-encode, for videos up to 15 minutes.
What format do I get?
A turned MP4 stays an MP4 and a MOV stays a MOV. Anything re-encoded comes back as an MP4 with H.264 video and AAC sound: WebM and MKV have no rotation flag players honour.
Does my video get uploaded?
No. It's turned in your browser, on your device.
Which browsers does it work in?
A turn of an MP4 or a MOV needs no encoder, so it works in current Chrome, Edge, Safari and Firefox. A mirror or a re-encode makes H.264 video, which Chrome, Edge and Safari can.