You recorded a video on your phone, transferred it to your computer, and now it's playing sideways. Or upside down. Or your selfie video looks mirrored and the text in the background is reversed. These are some of the most frustrating video problems — and some of the easiest to fix.
All you need is a quick rotation or flip, and you can do it for free in your browser with VideoTools Video Rotator. No software to install, no account to create, and the preview updates instantly so you can confirm the fix before processing.
Why Videos End Up Sideways
This happens more often than you'd expect, and it's almost always caused by how smartphones handle video orientation.
When you record a video on your phone, the camera sensor always captures in one physical orientation. Your phone's gyroscope detects how you're holding the device and writes a rotation metadata tag into the video file. When you play the video back on your phone, it reads that tag and displays the video correctly. The raw video data itself is never actually rotated.
The problem comes when you transfer the video to another device or app. Many desktop video players, editing tools, and social media upload pipelines ignore the rotation metadata and display the raw video orientation. This is why a video looks perfect on your iPhone but plays sideways on your Windows PC. It's the same file — one player reads the metadata, the other doesn't.
This issue is especially common with iPhone MOV files transferred to Windows. Windows Media Player and some older versions of VLC don't respect Apple's rotation metadata, so the video appears rotated 90 degrees. The permanent fix is to actually rotate the video pixels, not just the metadata.
How to Rotate a Video Online (Step by Step)
Here's how to fix a sideways or upside-down video using the free VideoTools Video Rotator:
Step 1: Open the Video Rotator. Go to the VideoTools Rotate tool in your browser. Works on desktop and mobile — no download needed.
Step 2: Upload your video. Drag and drop your video onto the upload area, or click to select a file. MP4, MOV, WebM, AVI, and MKV are all supported.
Step 3: Click the rotation button you need. Choose 90° Right, 90° Left, or 180° depending on how your video needs to be corrected. You can also apply horizontal or vertical flips. All transformations are combinable — rotate and flip in one go.
Step 4: Preview the result instantly. The preview updates immediately using CSS transforms — no waiting, no processing. Check that the orientation looks right before committing to the final render. If it's not quite right, try a different rotation or reset and start over.
Step 5: Click Process and download. Once the preview looks correct, hit the process button. VideoTools will re-encode the video with the rotation baked in. Download the result and it'll play correctly on every device and player.
Your file never leaves your device — all processing happens in your browser.
Rotate vs. Flip — Which Do You Need?
These are different operations, and picking the right one saves you time.
Rotate turns the entire frame around its center point. A 90° right rotation turns a landscape video into portrait (or fixes a video that's sideways to the left). A 180° rotation fixes an upside-down video. This is what you need for most sideways video problems — the video was recorded in the wrong orientation and needs to be turned.
Horizontal Flip mirrors the video left-to-right, like looking in a mirror. The video stays the same orientation (landscape or portrait), but left and right are swapped. This is what you need to fix mirrored selfie videos where text appears backwards.
Vertical Flip mirrors the video top-to-bottom. This is rare, but occasionally needed for footage from action cameras or drones that were mounted upside down.
How to Fix Mirrored Selfie Videos
Front-facing cameras on most smartphones mirror the preview by default — you see yourself as if looking in a mirror, which feels natural. Some phones also save the final recording in this mirrored state, which means text, logos, and surroundings appear reversed in the video.
To fix this, use the Horizontal Flip option in the Video Rotator. One click reverses the mirror effect, and text in your video will read correctly again.
To prevent this in future recordings: on iPhone, go to Settings > Camera and turn off "Mirror Front Camera." On Android, the setting varies by manufacturer but is usually found in the camera app's settings under "Save selfies as previewed" or similar. Turning this off saves the un-mirrored version by default.
Rotating Videos for Different Platforms
YouTube expects 16:9 landscape video. If you have a vertical video that you want to post on YouTube without black bars on the sides, rotating it won't help — you'd end up with a sideways video. Instead, the video was likely meant to be vertical. Consider posting it as a YouTube Short (which uses 9:16) or cropping it to fit 16:9 if there's enough content in the frame.
TikTok, Reels, and Shorts expect 9:16 vertical video. If you have a landscape video you want to post here, rotating it 90° would technically make it vertical, but the content would be sideways. The better approach for landscape-to-vertical conversion is cropping the center of the frame to 9:16, which keeps the content upright.
When rotation is the right answer: Rotation solves orientation problems — a video that was captured at the wrong angle. It doesn't solve aspect ratio problems. If your video content is upright but the frame is the wrong shape, use crop or resize instead. If your video content is literally sideways or upside down, rotation is exactly what you need.
FAQ
Why is my video sideways on my computer but not on my phone? Your phone reads the rotation metadata embedded in the video file and auto-corrects the display. Many desktop players ignore this metadata and show the raw video orientation. Rotating the video with a tool like VideoTools permanently fixes the pixel orientation so it plays correctly everywhere.
Can I rotate a video on iPhone without an app? Yes — the Photos app on iPhone has a built-in rotate and crop tool. Open the video, tap Edit, then tap the crop/rotate icon. However, if you want to avoid using phone storage for processing or need more control (like combining rotation with a flip), you can use VideoTools in your mobile browser.
Does rotating a video lose quality? There is minimal quality change. VideoTools uses high-quality H.264 encoding (CRF 23) that produces results visually identical to the original. The file size may differ slightly due to re-encoding, but the visual quality is preserved.
How do I rotate a video and crop it at the same time? Do these as two quick steps: rotate first with the Video Rotator to fix the orientation, then use the Video Cropper to trim the frame to your desired aspect ratio. Each step takes just a few seconds.