Client-Side PDF Toolkit
100% Client-Side PDF processing. No server uploads.
About Video Rotate Tool
The Video Rotation & Orientation Flip Tool rotates sideways smartphone videos (90° Clockwise, 90° Counter-Clockwise, 180° Inverted) or applies horizontal/vertical mirror flips losslessly by updating container rotation metadata or re-rendering frames.
How to Use Video Rotate Tool
Step 1
Upload a video file.
Step 2
Click the rotation arrow buttons (90° CW, 90° CCW, 180°) or Flip Mirror.
Step 3
Preview the upright video in the interactive player.
Step 4
Click "Export Rotated Video".
Practical Use Cases for Video Rotate Tool
Fixing Sideways Smartphone Videos Recorded in Wrong Orientation
Rotate sideways videos recorded when phone gyro sensors failed to trigger portrait or landscape mode during camera launch.
Flipping Mirrored Webcam & Selfie Video Recordings
Apply a horizontal mirror flip to webcam recordings so text on shirts and whiteboard writing reads naturally from left to right.
Input & Output Examples
Rotating Sideways Video 90° Clockwise
Video: `phone_video.mp4` (Sideways 1920x1080), Action: `Rotate 90° CW`
Upright 1080x1920 vertical video exported with perfect orientation across all media players
Key Features & Performance
- ✓Rotations: 90° Clockwise, 90° Counter-Clockwise, 180° Upside-Down Flip.
- ✓Mirroring: Horizontal Mirror Flip (Left-to-Right) and Vertical Flip.
- ✓Fast Metadata Mode: updates MP4 `tkhd` display matrix losslessly in 1 second without re-encoding.
- ✓100% Client-Side memory execution.
- ✓1-Click Download rotated video.
Key Terminology & Definitions
`tkhd` Display Matrix
A $3\times3$ transformation matrix in the MP4 track header atom that instructs video players to rotate the video canvas during playback.
Mirror Flipping
Inverting the horizontal X-axis of video pixels so the image mirrors itself, commonly used to fix inverted webcam video feeds.