How to rotate a video — online, Windows, Mac, iPhone, Android

You filmed something on your phone and the video came out sideways. Or upside down. You transfer it to your computer and it plays at the wrong angle. This is one of the most common video problems, and it has nothing to do with the content — just the orientation. Fixing it should take seconds.

This guide covers how to rotate a video on every platform: in the browser (no install), on Windows, on Mac, on iPhone, and on Android. It also covers the difference between rotating and flipping, and explains why the rotation problem happens in the first place.

Why videos end up rotated

The short version: your phone knows which way it was held, but it does not always burn that into the video frames. Instead, it stores a rotation flag in the file’s metadata — a small piece of information that says “play this at 90 degrees.”

Apps on your phone read that flag and display the video correctly. Many desktop players, web players, and video hosting platforms ignore it entirely. When you transfer the file or upload it somewhere, the rotation metadata can also get stripped out. The result is a video that looked fine on your phone but plays sideways on a computer.

The proper fix is to bake the rotation into the actual video frames — not just update a metadata tag — so the output plays correctly in every player, everywhere, regardless of what it supports.

How to rotate a video online — no install needed

The fastest way to fix a rotated video is in the browser. The video rotator at privateconvert.org runs entirely on your device: no upload to a server, no account, no waiting for a cloud process to finish.

1. Go to the Rotate Video tool at privateconvert.org.
2. Drop in your video file — MP4, MOV, WebM, MKV, and AVI all work.
3. Choose the rotation you need: 90° clockwise, 90° counter-clockwise, or 180°. You can also flip horizontally or vertically.
4. Click Download. The corrected file saves to your device.

The rotation is baked into the video frames, not just added as a metadata flag. That means the output will play at the right angle in every player — desktop, browser, TV, and anywhere else — regardless of whether that player respects metadata.

Because the file is processed locally in your browser, it never leaves your device. This matters for personal videos, work recordings, or anything sensitive.

This is the simplest path if you want to rotate a video online for free, rotate an MP4, or fix any video without downloading software.

How to rotate a video on Windows

Using Clipchamp (built into Windows 11)

Windows 11 includes Clipchamp, a built-in video editor that handles rotation:

1. Open the Start menu and search for Clipchamp, or find it in the Apps list.
2. Click Create a new video, then import your video file.
3. Drag the clip to the timeline.
4. Select the clip in the timeline. In the right panel, look for the Transform controls.
5. Use the rotation control to rotate 90°, 180°, or 270°. You can also flip horizontally.
6. Click Export when done and choose your resolution.

Using the Photos app (Windows 10 and 11)

On Windows 10, the built-in Photos app has a rotate option. Open the video in Photos, click Edit & Create, and look for the rotate button in the toolbar. Note that this method updates the metadata flag rather than re-encoding the frames, so the result may not display correctly in all players.

For a properly frame-baked rotation that works everywhere, use the browser tool above.

Using VLC (if you already have it)

VLC can rotate video on export without additional cost. Open VLC, go to Media > Convert/Save, add your file, and click Convert/Save. In the profile settings, open Video codec > Filters, check the Video transformation filter, then go to Filters > Video transformation and set the rotation angle. Start the conversion and save the output file. This is more involved than Clipchamp but works well if VLC is already part of your workflow.

How to rotate a video on Mac

QuickTime Player — the default video app on every Mac — can export a rotated copy of any video in four steps:

1. Open the video in QuickTime Player.
2. Click the Edit menu in the menu bar.
3. Choose Rotate Left, Rotate Right, or Flip Horizontal depending on what you need. Each click applies immediately and you can see the result in the preview.
4. Go to File > Export As, choose a resolution (1080p is a safe default), and save the file.

QuickTime re-encodes the video with the rotation baked in, so the output plays correctly on any device.

For other rotation angles — 180°, or combinations of rotate and flip in one step — the browser tool at privateconvert.org handles those cases without requiring any additional software on your Mac.

How to rotate a video on iPhone

The Photos app on iPhone can rotate videos directly, though the interface is slightly tucked away:

1. Open the video in the Photos app and tap Edit in the top-right corner.
2. Tap the crop and rotate icon (two overlapping corners with a rotate arrow) in the toolbar at the bottom.
3. In the crop/rotate view, tap the rotate button (the square with an arrow) in the top-left corner. Each tap rotates 90° counter-clockwise.
4. Tap Done to save. The edited version replaces the original (the original is kept as a revert option).

This method works for 90° and 180° increments. The edit is applied to the stored video, not just the display — so exports and shares will use the corrected orientation.

If you need a 90° clockwise rotation, tap the button three times (three counter-clockwise steps = one clockwise step).

How to rotate a video on Android

Google Photos is the most widely available option on Android and handles video rotation cleanly:

1. Open the video in Google Photos.
2. Tap Edit (the pencil icon) at the bottom of the screen.
3. Tap Crop.
4. In the crop toolbar, tap the rotate icon (a square with a curved arrow). Each tap rotates 90° counter-clockwise.
5. Tap Save copy when done. Google Photos saves the corrected version as a new file, leaving the original intact.

The edit is saved permanently in the output file and will display correctly when shared or transferred to other devices.

If Google Photos is not your default gallery app, most Android manufacturers include their own gallery editor with a similar rotate option. Look for an Edit button inside the video player, then find the crop or transform controls.

Rotate vs. flip — what is the difference

Rotation and flipping are related but solve different problems.

Rotation turns the video around its center — 90° clockwise, 90° counter-clockwise, or 180°. Use rotation when a video is sideways (held the phone in landscape when it should be portrait, or vice versa) or upside down.

Flipping mirrors the video along an axis. A horizontal flip (left-right) is the most common case — front-facing camera recordings sometimes come out as a mirror image, where text appears backwards and everything looks like a reflection. A vertical flip (top-bottom) is rarer but occasionally needed when footage was captured from an inverted mount or a camera rig.

You can often tell the difference at a glance: if the video content is recognizable but at the wrong angle, you need rotation. If it looks like a mirror (text is backwards), you need a horizontal flip.

The video rotator at privateconvert.org handles rotation and flip in the same tool, and you can combine them — for example, rotate 90° and flip horizontally — in a single pass.

The black bar problem

When you rotate a video that was filmed in landscape (wide) and need it in portrait (tall), the aspect ratio changes. A 16:9 landscape video rotated 90° is now very tall and narrow — 9:16 — and players that expect a standard frame may add black bars on the sides to fill the gap.

This is normal and expected. The black bars are not a processing error; they reflect the original footage dimensions. If you want to fill the frame without bars, you would need to crop the video after rotating, which trims off the top and bottom of the original wide shot.

Prevention: how to hold your phone to avoid the problem

Most sideways video problems come from starting a recording before the phone’s orientation sensor has locked in. Here are two habits that eliminate most rotation errors:

Lock orientation before hitting record. Before you start filming, hold the phone in the position you want, wait a moment for the screen to settle into that orientation, then tap record. If the auto-rotate icon in the status bar is still animating, wait another second.

Use landscape for anything that will play on a TV or computer screen. Landscape (16:9) is the default aspect ratio for most screens. Portrait video (9:16) is optimized for mobile feeds. If you are unsure, landscape is the safer default.

Frequently asked questions

Can I rotate a video without losing quality? Rotation involves re-encoding the video, which technically applies compression again. In practice, with modern codecs, the quality difference is not visible to the eye, especially at high bitrates. The tool at privateconvert.org uses efficient browser-based processing that preserves quality well for typical phone and camera footage.

Does rotating a video change the file size? Slightly, yes — re-encoding applies the codec again, which can change the file size up or down by a few percent. The change is small and not a practical concern for most use cases.

Can I rotate an MP4 file specifically? Yes. MP4 is the most common video format and is fully supported by all the tools covered in this guide. The browser tool at privateconvert.org handles MP4, MOV, MKV, WebM, and AVI.

Why does my video look rotated on my computer but fine on my phone? Your phone reads the rotation metadata stored in the file and compensates automatically. Most desktop video players and web players do not. The reliable fix is to bake the rotation into the frames rather than relying on metadata — which is what the browser tool does.

Will the rotated video play correctly when I share it or upload it? If the rotation is baked into the frames (as with the browser tool, QuickTime export, and Clipchamp), yes — it will play correctly everywhere. If the rotation was only applied as a metadata flag (as with some quick in-app edits), it may display incorrectly in players that ignore that flag.

How do I rotate just a portion of a video? The tools covered here rotate the entire video. If you only need a segment rotated, you would first need to split the video into clips, rotate the relevant clip, and then rejoin them. That requires a more capable editor like Clipchamp, iMovie, or DaVinci Resolve.

Is it safe to use an online video rotator with private footage? It depends on the tool. Most online video rotators upload your file to a server to process it. The tool at privateconvert.org is an exception: it runs entirely in your browser with no server upload. Your file never leaves your device, which makes it safe to use with personal or sensitive recordings.

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Ready to fix your video? Use the Rotate Video tool — no install, no upload, no account required.