What’s the difference between horizontal and vertical mirror?
Horizontal flips left/right (common for selfie footage). Vertical flips up/down (less common).
Mirror Video Online
Right in your browser. Flip horizontally or vertically and export a new file locally — fast and private with no uploads.
FAQ
Does mirroring require re-encoding?
Usually yes. Mirroring changes pixel layout, so encoding a new file is typically required.
Will quality drop?
Transcoding may. Use higher quality presets when needed.
Which browsers are supported?
The fast path relies on WebCodecs — recommended: latest Chrome / Edge.
Which formats are supported?
Common inputs: MP4/WebM/MOV/MKV. Output containers: MP4/WebM/MOV/MKV.
Are my files uploaded?
No. Processing happens locally in your browser.