What is Video Rotator?

Video Rotator fixes sideways, upside-down, or tilted clips. Spin them 90°, 180°, 270°, or any custom angle from 0 to 359, or flip horizontally and vertically. The preview rotates live as you choose, and ffmpeg.wasm runs the re-encode privately on your device — your footage never leaves it.

Pick a rotation — left 90, right 90, 180, or any custom angle from 0 to 359 degrees — and add a horizontal or vertical flip on top. Both are applied together in one pass, so you can rotate and mirror without re-uploading. The Quality control sets how hard the re-encode works: High keeps the most detail, Small file trims the size, Balanced sits in between. A live preview shows the result the moment you change a setting, and the audio track is preserved as-is. ffmpeg.wasm runs the re-encode inside the page, so footage from a private medical visit or a family event never reaches a server.

How to use

1. Upload the video that needs rotation or flipping
2. Pick a rotation and, if you like, add a flip on top — then set the quality. The preview updates instantly so you can confirm the orientation
3. Click Apply and download the correctly oriented video

When to use

• Fixing a portrait phone clip you need to play on a TV connected horizontally.
• Mirroring a tutorial video so a left-handed viewer can follow along naturally.
• Correcting an upside-down recording from a body camera that was clipped on backwards.

Result

Your phone recorded a video in portrait mode but you need it in landscape for a presentation. Upload the clip, rotate it 90° clockwise, and download the landscape version.

FAQ

Why is the video still sideways after I upload it, even though I see it correctly elsewhere?

Many phone players honour the rotation metadata flag, but some browsers and platforms ignore it. Running a real rotate-and-encode step here bakes the orientation into the pixels, so the video looks right everywhere.

Will rotating cause any quality loss?

There is a small loss because the video is re-encoded to H.264 in an MP4 file. It is usually invisible to the eye. To minimise it, start from the highest-quality source you have rather than a clip already shared on social media.

Can I rotate by 45 degrees or another custom angle?

Yes. Switch to the Custom angle preset, then drag the slider or type the value from 0 to 359 degrees. Any angle that isn't a multiple of 90 fills the corner gaps so the rotated frame stays rectangular — pick the corner fill colour (black, white, or a custom one) to match your content. For pure 90, 180, or 270, the dedicated preset buttons give a tighter crop with no fill bars at all.

Does the file size change after rotation?

The size will be similar but rarely identical. The Quality control decides the trade-off: High keeps more detail and a larger file, Small file shrinks it the most, and Balanced sits in the middle. A heavily compressed source may come out slightly larger, while a high-bitrate original may shrink. Aspect ratios are kept the same.

What's the difference between flip horizontal and rotate?

Flipping mirrors the image left-to-right (or top-to-bottom for vertical), turning text into its mirror image. Rotating spins the entire frame around its centre by 90, 180, or 270 degrees. Use rotate for orientation fixes; use flip for mirror effects.

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