Video Rotator/Flip
Rotate a video 90°/180°/270° or flip horizontally/vertically — fixes phone clips with the wrong orientation.
What is Rotate & Flip?
An orientation fixer for videos recorded sideways or mirrored by a front-facing camera.
How it works
The rotation is applied with ffmpeg's transpose filter and flips with hflip/vflip, followed by an even-dimension scale so encoders accept the result after a 90° turn. The pixels are re-encoded, which bakes the orientation into the file rather than relying on a metadata flag.
- Load your file. Drag a file onto the drop zone or pick one from your device. It is read locally by the browser and never uploaded.
- Set the options. Adjust the handles, format, quality or threshold controls — the preview updates as you change them.
- Process and download. Run the tool, then download the result. Compare the reported before/after size for compressors and converters.
Examples
A 42 MB podcast episode → 9 MB MP3
Trim the intro, normalise to −16 LUFS, and export at 96 kbps mono — a typical interview lands around a fifth of the original size.
A phone video with the wrong orientation
Rotate 90° and the width/height swap in the output, so it plays upright in every player instead of relying on metadata flags.
Common mistakes
Expecting instant encoders
Video encoding runs in single-threaded WebAssembly, so a clip takes roughly its own length (or a little longer) to re-encode. Stream-copy operations are near-instant by comparison.
Re-encoding when a copy would do
Trimming, removing audio and joining same-codec clips can copy streams without re-encoding — pick the copy option when it is offered to avoid any quality loss.
Ignoring the first-load download
The media engine is about 31 MB and is fetched on first use, then cached. The first conversion on a connection is slower than every later one.
Frequently asked questions
Why do some videos play sideways in one app and not another?
The rotation is stored as a metadata flag that some players honour and others ignore. Applying the rotation here writes the pixels in the new orientation, so every player agrees.
Does rotating change the resolution?
Yes — at 90° or 270° the width and height swap. 1080×1920 becomes 1920×1080.
Will text be mirrored after a flip?
A horizontal flip mirrors everything, including text. Use it for selfie-style footage, where matching the mirror is usually what you want.