Upload a video file and rotate it. For MP4 and MOV files the rotation is written as metadata, so it is lossless and near-instant; WebM and MKV files are re-encoded.
Your file never leaves your device. All processing happens right in your browser, and nothing is uploaded to a server.
For MP4 and MOV files, rotation is written as container metadata: the video data itself is copied untouched, the operation is lossless, and it finishes instantly. Players then display the file correctly rotated.
For formats without rotation metadata, the tool re-encodes the frames at high quality instead, so the result is correct everywhere regardless.
Phone clips recorded before the sensor caught up with how you were holding it, footage from mounted cameras installed sideways, and screen recordings of rotated devices.