Why Re-encode Instead Of Only Changing A Rotation Tag?

Display tags are not interpreted consistently by every player. Baking the visible orientation into pixels and clearing the tag creates a more predictable result.

In What Order Are Flips Applied?

The source display orientation is normalized, the selected quarter turn is applied, then horizontal and vertical flips run in the final screen axes.

It can retain the primary audio track while omitting subtitle, attachment and data tracks.

Video Rotator

Bake quarter-turn rotation and horizontal or vertical flips into video pixels while clearing stale rotation metadata.

Local processing: your media stays on this device.First export downloads about 31 MB of FFmpeg WebAssembly

01 · Source

Source Video

Bake rotation and mirror changes into pixels without a stale display tag.

Drop a video hereor choose a local file · maximum 250 MB / 30 minutes

02 · Settings

Output Controls

Settings are validated before the runtime starts.

Quarter Turn

Flip HorizontallyFlip Vertically

Source display orientation is normalized first. Requested flips are applied after the quarter turn, then the output rotation tag is cleared.

Output ContainerQuality (CRF 24)Lower values preserve more detail and make larger files.

Remove Container MetadataInclude Primary Audio

03 · Output

Output Workspace

The completed file and processing receipt will appear here.

Open a source, confirm the settings, then run Rotate Video.

Codec note: exports run in FFmpeg WebAssembly after a first-use download of about 31 MB. The 250 MB / 30 minutes picker ceiling is not a success guarantee: the complete source and output occupy browser memory, available decoders vary, and large 4K or unusual-codec media may still fail. Processing uses a duration-aware 5–45 minute job timeout. Fast trimming follows source keyframes and is not frame-perfect; re-encoded timing can still vary slightly on variable-frame-rate media.

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What Is the Video Rotator?

The Video Rotator repairs or changes orientation with 90-degree clockwise, 180-degree and 90-degree counterclockwise turns plus independent horizontal and vertical flips. FFmpeg first honors the source display orientation, then applies the requested pixel transform and clears the output rotation tag so players do not rotate it a second time. It retains optional primary audio and exports MP4 or WebM with a reproducible receipt.

How It Works

Open a video, choose a quarter turn and optional flips, then review the swapped output dimensions. Flips happen after rotation. Select container, quality, primary-audio and metadata preferences before encoding locally.

When to Use It

Use it for sideways phone footage, mirrored camera recordings, orientation-tag compatibility problems or simple quarter-turn editorial fixes. Unusual camera display matrices can be interpreted differently, so compare the source and rendered previews before delivery.

Frequently Asked Questions

Why Re-encode Instead Of Only Changing A Rotation Tag?: Display tags are not interpreted consistently by every player. Baking the visible orientation into pixels and clearing the tag creates a more predictable result.
In What Order Are Flips Applied?: The source display orientation is normalized, the selected quarter turn is applied, then horizontal and vertical flips run in the final screen axes.
Does It Keep Audio?: It can retain the primary audio track while omitting subtitle, attachment and data tracks.

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