100% local & free

Rotate videos online & save them losslessly — free

Fix sideways or upside-down videos with a 90° or 180° rotation. Only the rotation flag is rewritten — no re-encoding, zero quality loss, instant even for multi-GB files. No upload, everything stays in your browser.

Drop a video / tap to select
MP4, MOV & M4V ・ free, unlimited
Nothing is uploaded — everything runs in your browser

📖How to use

1

Pick a video

Drag & drop the video you want to fix (MP4, MOV or M4V), or tap to select it.

2

Set the orientation

Use "Left 90°", "Right 90°" and "180°" while watching the preview until it looks right.

3

Save

Press "Save in this orientation" — the file with the rewritten rotation flag is created instantly and downloaded.

4

Check

After saving, the preview switches to the rewritten file. If it looks right, you're done.

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❓FAQ

Does the quality degrade?
No. Not a single byte of the video or audio data is changed — only the rotation flag (metadata) area is rewritten. The file size stays practically the same.
Is it really free?
Yes, completely free. No account needed.
Is my video uploaded to a server?
No. All processing happens in your browser, so your video never leaves your device and your privacy is protected.
Does it work with large files?
Yes. The video body is never loaded into memory, so even multi-GB files finish in an instant. It also works on smartphones.
Which video formats are supported?
MP4, MOV and M4V. The rotation flag is an MP4/MOV (ISOBMFF) mechanism, so WebM and AVI are not supported.
I saved the file but the orientation didn't change
Your player may ignore the rotation flag. Check with a flag-aware player such as VLC, Windows Media Player, or the default players on iPhone/Mac. Uploads to YouTube and social media are handled correctly.
Why do iPhone videos appear sideways on a PC?
iPhones and other smartphones record portrait videos as "landscape pixels + a rotation flag". If a player ignores that flag, the video appears sideways. Rewriting the flag with Yokotate makes it display correctly.
Will the orientation be respected on YouTube and social media?
Yes. Major video sites and social networks such as YouTube, X and Instagram recognize the rotation flag and process the video in the correct orientation.
The preview won't play
Some codecs such as HEVC can't be played in every browser, but rotating and saving still work. Check the saved video in a compatible player.
Can it rotate the actual pixels (re-encode)?
No — Yokotate only rewrites the rotation flag and does not re-encode pixels. For videos used in old flag-unaware software, rotate and export with a video editor instead.
My player can rotate the video, but can't save it
Rotation in most players only changes the display — nothing is saved to the file. Yokotate downloads an actual video file with the rotation flag rewritten, so it stays rotated when you save, share or upload it.
How do I rotate and save a video on Windows 11?
No app needed. Open Yokotate in your browser, pick the video, rotate, save — done. Built-in editing tools re-encode, which is slow and degrades quality; Yokotate is lossless and instant. It works the same on Windows 10, Mac and smartphones.

📚What to know about fixing video orientation losslessly

Rewriting only the rotation flag makes it lossless and instant

MP4 and MOV files contain a rotation flag (the tkhd display matrix) that says "display this video rotated by 90°". It's why portrait iPhone videos appear upright. Yokotate rewrites only this flag and never touches the video itself — zero quality loss, no re-encoding, done in an instant.

Built for multi-GB files with no waiting

Only a few dozen bytes in the video's index are rewritten, and the video body is never loaded into memory. Length and size don't matter — long meeting recordings and 4K footage finish immediately, with no upload or conversion wait.

Everything runs in your browser, so privacy is safe

Your video is never sent to a server. All processing happens locally in your browser, so even confidential or personal footage can be fixed with peace of mind. No account, no installation.

Why smartphone videos come out sideways

iPhones and Android phones store portrait videos as landscape pixels plus a rotation flag. Flag-aware players show them correctly, but some software ignores the flag and shows them sideways or upside down. Rewriting the flag to the correct value with Yokotate resolves the mismatch.

Player support, and what to do when it doesn't work

iPhone/iPad/Mac, Chrome, Safari, Edge, Firefox, VLC, Windows Media Player, and uploads to YouTube, X and Instagram all honor the rotation flag. Some older players and video editors ignore it — in that case the pixels themselves must be rotated by re-encoding.

The easiest way to rotate & save a video on Windows 11

Windows 11 has no quick built-in way to rotate a video and save it — editing apps re-encode, costing time and quality. With Yokotate it's three steps in your browser: pick, rotate, save. No install, lossless, and you download the rotated MP4/MOV as-is.