Explore our collection of 150+ developer tools, PDF editors, and image converters. Everything runs locally in your browser.
Ubify Media & Design Operations
UI/UX & DIGITAL MEDIA SPECIALISTS
About This Tool
The Rotate Video tool corrects rotated, sideways, or inverted video recordings directly in your browser without uploading multi-gigabyte video files to cloud render servers.
### Client-Side Canvas & MediaRecorder Pipeline Video transformation runs entirely within your device browser environment: - Dimensional Coordinate Transform: When rotating by 90° or 270°, the tool swaps source canvas width and height ($$W_{\text{out}} = H_{\text{in}}$$, $$H_{\text{out}} = W_{\text{in}}$$), recenters the video context matrix via translate, and rotates by exact radian angles ($$\theta = \frac{\text{deg} \times \pi}{180}$$). - Directional Mirroring: Flip Horizontal and Flip Vertical controls invert canvas scaling parameters ($$\text{scale}(-1, 1)$$ or $$\text{scale}(1, -1)$$) to correct front-facing selfie camera mirror recordings. - Browser Re-Encoding: The rendered frames stream via canvas.captureStream(30) into native browser MediaRecorder (encoded as video/webm using VP9 or baseline WebM codecs) and package into a local downloadable blob URL.
### Worked Example Workflow 1. Upload a sideways portrait clip recorded on a smartphone. 2. Select 90° clockwise rotation and click "Flip Horizontal" if mirrored. 3. The live HTML5 video player displays the reoriented canvas stream. 4. Click "Render & Download Rotated Video" to generate the re-encoded WebM video file.
### Private On-Device Processing All video frame decoding, rotational transforms, and WebM packaging execute locally inside browser memory. Zero video bytes or personal media assets leave your computer.
How to Use
- 1
Select a video file from your computer or use the sample clip.
- 2
Choose your rotation angle (90°, 180°, or 270° clockwise).
- 3
Optionally toggle Flip Horizontal or Flip Vertical to fix mirrored camera footage.
- 4
Click "Render & Download Rotated Video" to re-encode and save your corrected video file.
Frequently Asked Questions
What video file formats can I rotate?
The tool accepts standard MP4, WebM, and MOV video containers supported by your web browser and exports a re-encoded WebM video file.
Does rotating a video degrade the original visual clarity?
Canvas re-encoding captures video frames at original resolution at 30 frames per second using efficient VP9 WebM compression.
Are my personal videos uploaded to external servers?
No. The entire transformation pipeline runs client-side via HTML5 Canvas and MediaRecorder with zero remote network requests.