90°, 180° and 270°
Use 90° clockwise when the top should move right, 270° when it should move left, and 180° when the whole picture is upside down.
1. Select video
Drop a video here
or click to browse
Supported formats: MP4, WebM, MOV, MKV
Maximum file size: 2 GB
2. Rotate options
Preview
Original
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Original preview
Select a video to compare rotation.
Rotated preview90° Clockwise
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Rotated preview
The rotated frame appears here.
Original
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Output
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Rotation
90° Clockwise
Duration
-
Result
The rotated frame appears here.
- Original size
- -
- Output size
- -
- Size change
- -
- Resolution
- -
- Duration
- -
- Format
- MP4
When verified by the implementation, local files are decoded and encoded in the current browser and are not uploaded to AppKiro. URL mode still downloads data from the remote host and is subject to its CORS, authorization and range-request rules.
How do I fix a sideways video?
Choose 90° clockwise when the top of the picture needs to move right, 270° when it needs to move left, or 180° for an upside-down recording. Preview several points before exporting.
Rotation changes orientation, not duration
A video rotator turns every frame by the same angle for the full timeline. It does not trim time or automatically crop the picture. The output can be re-encoded, so file size and compression may change.
Who should use this tool?
It is useful for phone footage saved sideways, an upside-down camera recording, a screen capture with incorrect orientation, or clips that need a consistent direction before editing or publishing.
When rotating a video is useful
- Correct a portrait phone recording that plays horizontally.
- Fix footage saved upside down by a camera or capture device.
- Standardize clip orientation before merging, cropping or adding overlays.
- Bake the correct direction into the pixels when players disagree about orientation metadata.
- Prepare correctly oriented preview frames and thumbnails.
How to rotate a video
Choose a local file or a public direct media URL and confirm its duration and dimensions.
Select 90°, 180° or 270° based on where the top edge of the picture needs to move.
Play or scrub through several points to check faces, text, logos and frame edges.
Keep the source frame rate unless a delivery specification requires another value; use Auto bitrate when no fixed target is needed.
Process the video, download the new file and verify orientation, audio sync, dimensions and playback.
Understanding the rotation controls
Maintain aspect ratio
Keep this enabled for normal use. A quarter turn usually swaps width and height so the picture is not squeezed.
Preview background
Black, blur or a custom color can make empty canvas areas easier to inspect. Only claim that this background is rendered into the output if the source code actually does so.
Frame rate and bitrate
Keeping source FPS avoids unnecessary motion changes. Bitrate controls the quality-versus-size trade-off and does not guarantee a specific final file size.
Remove metadata
This can omit supported embedded tags from the new file. It does not remove burned-in captions, logos or visual information.
Where processing happens
When verified by the implementation, local files are decoded and encoded in the current browser and are not uploaded to AppKiro. URL mode still downloads data from the remote host and is subject to its CORS, authorization and range-request rules.
Limitations to know
- Rotation does not repair blur, noise, shake, exposure or lens distortion.
- Long or high-resolution videos can exceed browser memory or encoder limits.
- Output codec support varies by browser, operating system and processing engine.
- A re-encode can change compression and size even when the duration stays the same.
Common problems
The preview turns the wrong way
Switch between 90° and 270°. Choose the direction by deciding where the top edge needs to move.
Bars appear around the picture
The source and output canvas may have different shapes. Keep aspect ratio to avoid distortion, then crop or resize in a separate step if needed.
The result is larger than the source
Rotation alone is not compression. Size depends on codec, bitrate, frame rate, duration and audio.
A URL does not load
The link may be a webpage, require authentication, block CORS or lack byte-range support. Use a direct public file URL or select a downloaded file.
Video rotation FAQ
Which angle should I choose?
Use 90° clockwise when the top should move right, 180° for upside-down footage and 270° clockwise when the top should move left. Confirm with the preview.
Will rotation change the duration?
Normally no. The same rotation is applied to every frame, although encoding can slightly alter timestamps depending on the pipeline.
Does rotation crop the video?
No. Rotation changes direction. Use Crop Video when you need to remove edges or reframe the composition.
Will width and height change?
A 90° or 270° turn usually swaps width and height. A 180° turn keeps the same dimensions.
Can I rotate an MP4 without uploading it?
Yes when the verified implementation processes a local MP4 in the browser. URL mode still retrieves the file from its remote server.
Does rotation reduce quality?
The geometric turn can be exact, but exporting through a lossy codec may introduce another compression pass. Actual quality depends on the encoder and bitrate.
Why is the orientation different between players?
The file may contain a rotation flag that players interpret differently. Exporting physically rotated frames can improve consistency.
Is the original file overwritten?
No. The tool should create a separate output file. Keep the source until the new copy has been reviewed.
Related video tools
Crop VideoRemove unwanted edges or reframe the corrected picture.Video ResizerChange output dimensions and fit after orientation is fixed.Video ConverterChange container or codec when playback compatibility is the issue.Video Thumbnail GeneratorExtract correctly oriented preview images from the video.