Video Flipper
FFmpeg PoweredFlip horizontally, vertically, or rotate 90°
Drag & drop files here, or click to select
Supports MP4, WebM, AVI, MOV, MKV and other common formatsHow to Use
- Click the area above to select a file, or drag and drop a file onto the page
- Adjust parameters in the settings area
- Click the process button and download the result when ready
Frequently Asked Questions
How It Works
The Video Flipper uses FFmpeg WebAssembly with the hflip (horizontal flip), vflip (vertical flip), and transpose (rotation) video filters. These filters operate on the pixel matrix of each video frame during the decoding-encoding pipeline.
Horizontal flipping mirrors each frame along the vertical axis — pixel column N becomes column (width-1-N). Vertical flipping mirrors along the horizontal axis — pixel row M becomes row (height-1-M). 90° rotation uses the transpose filter which re-maps pixel coordinates: (x,y) becomes (height-1-y, x) for clockwise rotation.
All operations require full re-encoding since the pixel data is fundamentally transformed. The tool uses the libx264 encoder for H.264 output, preserving the original resolution and frame rate. Audio tracks are passed through unchanged since flipping/rotating has no effect on audio data.
Tips & Best Practices
- Fix mirrored webcam recordings: Many webcams record mirrored — use horizontal flip to restore natural orientation.
- Combine operations sequentially: To flip horizontally AND rotate 90°, apply flip first, then rotate in a second pass.
- Check aspect ratio after rotation: Rotating a 16:9 video by 90° produces a 9:16 video — ensure this matches your target platform.
- Preview before processing: Flipping a video that doesn't need it wastes processing time — verify the issue first.
- Preserve original orientation: When sharing with others, ensure the video's display orientation metadata is correct for consistent playback.
- For screen recordings: Horizontal flip is useful when mirroring a screen recording to correct left-right orientation.
Use Cases
Webcam users correcting mirrored video from front-facing cameras for a natural left-right orientation. Mobile phone recorders rotating 9:16 portrait videos to 16:9 landscape for widescreen display.
Social media creators flipping videos to correct text that appears backwards in selfie-mode recordings. Educators rotating whiteboard recordings that were captured at an angle. Film editors creating mirror effects for artistic sequences. Product reviewers flipping close-up shots to match the correct product orientation for their audience.