Rotate a Video

Yes. The rotation is written into the actual frames rather than left as metadata, so players that ignore rotation flags still show the video the right way up.

Both. The video is processed with WebCodecs on your own device and never uploaded, so there is no account, no quota and no server that sees your file.

Phones record in one physical orientation and write a rotation flag into the file telling the player to turn the picture. Some players honor that flag, others ignore it — which is why the same clip looks upright on your phone but sideways on a website or in an editor. This tool rotates the actual frames and removes the ambiguity, so the video reads the same everywhere instead of depending on whether a player respects the flag.

The rotation is clockwise. If your video is lying on its right side and you want it upright, choose 270 (a quarter-turn counter-clockwise); if it's on its left side, choose 90; 180 is for footage that's fully upside down. If you're unsure which way it's lying, pick one, check the result, and switch to the other quarter-turn if it went the wrong way — re-encoding twice costs nothing here.

Rotating turns the frame; it doesn't mirror it, so text and faces stay the correct way round rather than becoming a reversed image. Because the rotation is burned into the frames, the video is re-encoded, which is a lossy step — but a single pass at the tool's quality setting looks the same as the source. What you get back is a normal MP4 that's genuinely oriented the right way, not one relying on a flag.