Video Rotator
Rotate a video 90°, 180° or flip it horizontally or vertically, in your browser. Free, private, no signup or upload.
About the Video Rotator
This free video rotator fixes clips that were filmed sideways or upside down. Rotate 90° clockwise or counter-clockwise, flip 180°, or mirror the video horizontally or vertically — then download a corrected file that plays the right way up everywhere.
The rotation is applied in your browser using FFmpeg WebAssembly, so your video is never uploaded. The engine (about 30 MB) downloads from a CDN on first use and is cached, so the first run is slower than the rest. The video is re-encoded as an H.264 MP4 with a web-friendly yuv420p pixel format so it plays on every device.
Rotating requires re-encoding the video, which takes a little time and can slightly change the file size, but the visible quality is kept high. Videos up to 100 MB are supported.
How to Use the Video Rotator
- 1Choose a video file, up to 100 MB.
- 2Pick a rotation: 90° left, 90° right, 180°, or a horizontal/vertical flip.
- 3Click Rotate Video and wait for the progress bar.
- 4Preview the corrected video and download it.
Frequently Asked Questions
Is my file uploaded to a server?
No. All processing runs in your browser using FFmpeg compiled to WebAssembly. Your file never leaves your device — only the converter engine is downloaded, once.
Why is the first run slow?
The first time you use any converter here, the browser downloads the FFmpeg core (about 30 MB) from a CDN and compiles it. It is then cached for the session, so later runs are much faster.
Why does my phone video appear sideways?
Some players ignore the rotation metadata phones add. This tool bakes the rotation into the video itself, so it displays correctly no matter which player opens it.
What is the difference between rotate and flip?
Rotate turns the whole frame by 90 or 180 degrees. Flip mirrors it — horizontal flip swaps left and right (like a mirror), vertical flip swaps top and bottom.
Is there a file size limit?
Yes, 100 MB per file. Because everything runs in your browser's memory, very large files can be slow or run out of memory. Trim long clips first if you hit the limit.