Rotate Video Tool
Rotate 90° / 180° / 270° or flip horizontally / vertically. Fixes phone clips that play sideways.
Local processing only — your file never leaves the browserUseful next tools
What this tool does
- 90° clockwise / 180° / 90° counter-clockwise
- Horizontal mirror and vertical flip
- Overrides source rotation metadata so it plays the same way everywhere
- Video is re-encoded; audio is stream-copied (lossless)
- Local-only processing — your file never leaves the browser
How to use
- 1
Drop the video
MP4 / MOV / WebM, up to 500 MB.
- 2
Pick a direction
5 options. The most common fix for "iPhone clip plays sideways" is 90° CW.
- 3
Run
Preview will appear when complete; download the result.
What each setting means
Recommended settings
Common pitfalls
Symptom: Output still plays the same direction
Cause: Some old players honor metadata over pixel orientation.
Fix: This tool overwrites the rotate metadata too (-metadata:s:v rotate=0), so a fresh download will play correctly.
Symptom: Slight quality drop after 90° rotation
Cause: Resampling for the swapped dimensions.
Fix: CRF 20 keeps the loss imperceptible. To avoid entirely, re-shoot in the correct orientation.
Symptom: Mirror flip made on-screen text unreadable
Cause: Mirroring flips text along with the rest of the frame.
Fix: Skip mirror flip for text-heavy footage; use a different effect like a background-only mirror layer.
Equivalent FFmpeg commands
Reference commands you can run on the desktop FFmpeg CLI.
ffmpeg -i input.mp4 -vf transpose=1 -metadata:s:v rotate=0 -c:v libx264 -crf 20 -c:a copy output.mp4ffmpeg -i input.mp4 -vf "transpose=2,transpose=2" -metadata:s:v rotate=0 -c:v libx264 -crf 20 -c:a copy output.mp4ffmpeg -i input.mp4 -vf hflip -c:v libx264 -crf 20 -c:a copy output.mp4Browser support & limits
- Recommended max: 500 MB
- No hardware encoding (browser sandbox restriction)
Privacy
This tool runs ffmpeg.wasm directly in your browser. Files never leave your device — everything runs locally. Read the privacy policy →
Frequently asked questions
Should I rotate my phone clip or re-shoot?
For an existing clip, rotate. For new shoots, check your camera app settings — phones write rotation metadata via the accelerometer, so this is normally automatic.
Two 90° rotations = 180°?
Yes, mathematically. Use the 180° preset directly so the encode runs once instead of twice.
Should I rotate before uploading to YouTube?
YouTube respects rotation metadata, but TikTok and some other social platforms don't. Pre-rotating physically is the safe path.
Does audio change?
No — audio is stream-copied (-c:a copy), unchanged in length or quality.
Does file size change after rotation?
Pixel count is identical; encoded size differs only marginally because of how H.264 handles the new aspect.