What Is a Camera Mirror Test?
This tool shows your live camera feed with a genuine on/off mirror toggle, so you can see exactly what mirroring does to your video in real time - flipping it horizontally, the same way a bathroom mirror flips your reflection. Holding up actual text to the camera while toggling mirroring on and off gives you a clear, hands-on way to confirm the difference, since mirrored text becomes visibly backwards.
Mirroring confusion is common because different apps handle it differently by convention: most video call apps mirror your own self-preview for a natural, comfortable feel - matching how you're used to seeing yourself in a mirror - while the video actually sent to other participants is typically not mirrored, so they see you the way others would see you in person.
How to Use the Camera Mirror Test
- Choose your camera from the Camera Device menu, or keep Default camera. Optionally choose a preferred video quality; your browser may deliver a different resolution.
- Click Start Camera and allow camera access. Live video appears only in your browser. Use Stop & Release whenever you want to turn off the camera.
- Hold up a piece of paper displaying text such as ABC → directly in front of the camera. Enable Mirror single preview to see how the text flips horizontally, then disable it to see the unmirrored original.
- Turn on Compare both orientations to see mirrored and unmirrored live views side by side. Both panels show the same camera stream with different display transformations, not recordings.
- Optionally enable the alignment crosshair to compare hand movements, or use Fullscreen for a larger view. Choose Exit or press Escape to return.
- Check the actual video frame (decoded browser video dimensions), camera-reported FPS when the camera exposes it, and active preview time. These values are not physical camera performance certifications.
- After visually checking the text, select Mirror effect verified or Could not verify. These are your manual observations; download them with Export CSV or remove them with Clear history. No camera images are saved.
- Use Refresh devices after connecting another camera. If you switch camera or video quality during a session, the old camera stream is stopped before a new one is requested. Stop the camera when finished.
How It Works
This tool applies a CSS transform: scaleX(-1) to the live video element, which flips the
displayed image horizontally - a real, visible transformation, not a simulated effect. The underlying video
stream from your camera is unchanged; only its on-screen presentation is flipped, which is exactly how most
applications implement a "mirror my preview" feature internally.
Understanding Your Results
- Text reads backwards with mirroring on, correctly with it off - the toggle is working exactly as expected, and you now have a clear visual reference for what "mirrored" looks like.
- Your hand moving right appears to move left on screen when mirrored - this is the expected mirror effect, matching how a real mirror or bathroom mirror behaves.
- Confused about why a specific app shows you differently than this test - that app may apply its own separate mirroring logic for its self-preview versus what it actually transmits; this tool demonstrates the effect itself, not any particular app's specific behavior.
Browser Limitations
This tool can only control mirroring for its own preview on this page - it cannot detect or change how any other application, like a video conferencing tool, chooses to mirror or not mirror your camera. Whether a specific app mirrors its self-view or the video it actually sends is entirely that app's own design decision, which this test cannot inspect or override.
Common Mistakes to Avoid
- Assuming this test reflects how another specific app mirrors your camera - every app makes its own independent choice about self-preview mirroring; this tool only demonstrates the effect itself clearly.
- Testing without holding up actual text or an object with clear orientation - text is the clearest way to visually confirm mirroring, since left-right symmetric objects can look identical either way.
- Confusing mirrored self-preview with what others actually see of you on a video call - many apps mirror only your own preview for comfort, while the feed other participants receive is typically not mirrored.
Frequently Asked Questions
Why do I look mirrored on video calls but not in recorded video?
Many video call apps intentionally mirror your own self-preview so it feels natural, like looking in a mirror, while the actual footage saved or sent to others is typically not mirrored, matching how they would see you in person.
Does mirroring change the actual video my camera captures?
No, mirroring here is purely a visual flip applied to how the video is displayed on screen - the underlying camera stream itself is unchanged.
Can this tool tell me if a specific app, like Zoom or Teams, mirrors my video?
No, this tool can only demonstrate what mirroring looks like using its own toggle; each application makes its own independent choice about mirroring that this test cannot inspect.
Is my video recorded during this test?
No. Video is only displayed live in your browser and is never recorded, saved, or transmitted anywhere.
Why does text look backwards but my face looks roughly the same either way?
Faces are nearly symmetric left to right, which makes mirroring hard to notice by looking at a face alone - text, with its clear directional letters, makes the flip immediately obvious.
Conclusion
Once you've seen text flip clearly with this toggle, you'll have a solid reference for spotting mirroring in any other app going forward. For a broader check of your camera's overall feed quality, pair this with the Webcam Tester.