WebcamTest.com
← Terug naar diagnosetools

Stap-voor-stap diagnose

Cameraboycot-detector

When a camera will not show video, the cause is usually one of four different things — a browser permission block, an OS-level privacy block, a driver or hardware conflict, or a genuine physical lens cover — and each needs different guidance. This runs an actual sequence of checks and tells you which one you are dealing with, rather than guessing from a single symptom.

Camera uit

Controles

Diagnosestappen

  • 1. Toestemmingsstatus van de browser:Controleren…

—

  • 2. Camerastreamtest:Wachten

Klik hierboven op "Volledige diagnose uitvoeren" om te beginnen.

  • 3. Framecontrole:Wachten

Wordt uitgevoerd nadat de streamcontrole geslaagd is.

Opmerkingen

Wat elk resultaat werkelijk betekent

Browsertoestemming geweigerdDe browser zelf blokkeert de toegang. Op te lossen via het camerapictogram in de adresbalk of de eigen privacy-instellingen van de browser.
Blokkade op besturingssysteemniveau (browser zegt toegestaan, stream faalt toch)The most commonly missed cause — an operating-system privacy toggle sitting behind an already-granted browser permission. Check your OS's camera privacy settings directly.
Geen apparaat gevondenHardware or driver issue — the browser cannot see any camera at all. Check cables, Device Manager, or whether the camera is disabled in the OS.
Kon niet starten (in gebruik)Almost always another application already holds the camera open. Close other video apps and tabs first.
Live maar lijkt afgedektPermission and stream both succeeded, but the image itself is near-uniformly black — consistent with a physical lens cover or privacy shutter left closed.

What this cannot check

No web page — this one included — can see other browser tabs, other applications, or background system processes. That is a deliberate security boundary, not a limitation of this specific tool. If you need to know exactly which application currently holds your camera, that information only exists at the operating-system level: Windows' camera privacy settings and Task Manager, or macOS's camera indicator and Activity Monitor, both show this directly.

Benchmarkreferentie

Echte browserfoutcodes

FoutnaamDiagnoseRepareren
NotAllowedError (toest. verleend)Blokkade op besturingssysteemniveauControleer de camera-privacy-instellingen van het besturingssysteem.
NotAllowedError (toest. niet verleend)Browsertoestemming geweigerdKlik op het camerapictogram in je adresbalk.
NotFoundErrorGeen apparaat gevondenControleer kabels, Apparaatbeheer, of uitschakeling op besturingssysteemniveau.
NotReadableErrorCamera elders in gebruikSluit andere apps/tabbladen die de camera gebruiken.
OverconstrainedErrorBeperkingsmismatch, niet geblokkeerdNot actually inaccessible — request different settings.

These are the real, standard error names getUserMedia reports — this tool reads yours directly rather than guessing.

Stap voor stap

Hoe de diagnose uit te voeren

  1. Klik op "Diagnose uitvoeren" — geen installatie nodig.
  2. Reageer op de toestemmingsvraag als die verschijnt.
  3. Read the three-step readout: permission state, stream attempt result, and a frame-content check for physical obstruction.
  4. Volg de specifieke aanwijzingen die worden getoond voor de fout die daadwerkelijk werd gedetecteerd, indien van toepassing.

Veelgestelde Vragen

Veelgestelde Vragen

Kan een website zien of een andere app mijn camera bespioneert?
No, and any tool that claims to is not being straight with you. Browser security is specifically designed so a web page cannot see other tabs, other applications, or background processes — that isolation is a core protection, not a gap. This tool reports what a page genuinely can see: its own permission state and stream errors, plus a check of whether the live image looks physically obstructed.
My camera light is off but an app says it's in use — what's happening?
On the large majority of modern webcams, the indicator LED is wired directly to the camera's power rail specifically so software cannot disable it while hiding sensor activity. If the light is genuinely off, the sensor is almost certainly not capturing. Check your OS's own camera-usage indicator or Task Manager / Activity Monitor for which process actually has it open.
Wat betekent NotReadableError?
The camera was found but the operating system would not hand it over to the browser — almost always because another application already has it open. Close other video apps and browser tabs using the camera and try again.
Hoe controleer ik welke app mijn camera gebruikt op Windows of Mac?
Windows 10 and 11 show a camera-in-use indicator in the system tray, and Settings → Privacy → Camera lists recent app access. macOS shows an orange/green indicator light plus, in recent versions, a dot in the menu bar you can click to see which app is using the camera or microphone.
Waarom staat er "toestemming verleend" maar start de camera nog steeds niet?
That specific contradiction — browser reports granted, stream still fails — is the clearest signature of an OS-level privacy block sitting behind an already-approved browser permission. It means something outside the browser, not the browser itself, is the actual blocker.