Runs on your device · Your file never leaves your device.
A clip filmed with the phone held the wrong way, a screen recording that came out on its side, a mirror-image selfie video: pick the turn, check the preview, download the fixed file. Choices are 90° clockwise, 90° counter-clockwise, 180°, flip horizontally (mirror) and flip vertically.
This tool rotates the picture itself and re-encodes it to H.264, rather than writing a rotation flag into the metadata. A flag is cheap but many players, websites and editing programs ignore it and show the video sideways anyway; rotated pixels are upright everywhere. The audio is copied untouched whenever MP4 can carry it.
The preview shows a still frame turned the same way the video will be, so you can see that "clockwise" is the right choice before waiting for the encode. Everything runs on your device; files over 1 GB are processed in parts that fit in memory.
How to Rotate a video: 90°, 180° or flip it
Add the video.
Choose 90° clockwise, 90° counter-clockwise, 180°, or a flip — the preview turns with your choice.
Press Rotate and download the MP4.
Supported formats and limits
Input
MP4, MOV, MKV, AVI, WebM, MPG, 3GP, TS, VOB and more
Output
MP4 (H.264 + AAC), pixels rotated — not a metadata flag
Not for: Straightening a slightly tilted horizon by a few degrees — this turns in steps of 90° only.
Frequently asked questions
Are my files uploaded to a server?
No. This conversion runs entirely inside your browser using your own device’s processing power. The file never leaves your computer or phone, which is why it also works when your connection drops.
Which way is clockwise?
The way the hands of a clock move: the top of the picture turns to the right. If a clip shows the ground on the left, clockwise brings it upright; if the ground is on the right, use counter-clockwise. The preview shows the result before you commit.
Does rotating lower the quality?
The picture is re-encoded to H.264 at the converter's default quality setting, which is visually transparent for almost everything. The audio is not re-encoded when MP4 can carry it as is.
What is the difference between rotate 180° and flip vertically?
A 180° turn keeps text readable — it is the same as turning your screen upside down. A vertical flip mirrors the picture top to bottom, so text ends up backwards. Use 180° for an upside-down clip; use the flips for mirror-image recordings.