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Diagnóstico Paso a Paso

Detector de Bloqueo de Cámara

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.

Cámara apagada

Comprobaciones

Pasos del Diagnóstico

  • 1. Estado del permiso del navegador:Comprobando…

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  • 2. Prueba de transmisión de cámara:Esperando

Haz clic en «Ejecutar Diagnóstico Completo» arriba para empezar.

  • 3. Comprobación del contenido del fotograma:Esperando

Se ejecuta después de que la comprobación de transmisión tenga éxito.

Notas

Qué significa realmente cada resultado

Permiso del navegador denegadoEl propio navegador está bloqueando el acceso. Se puede solucionar desde el icono de la cámara en tu barra de direcciones o desde la propia configuración de privacidad del navegador.
Bloqueo a nivel del sistema operativo (el navegador dice concedido, la transmisión sigue fallando)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.
No se encontró ningún dispositivoHardware or driver issue — the browser cannot see any camera at all. Check cables, Device Manager, or whether the camera is disabled in the OS.
No se pudo iniciar (en uso)Almost always another application already holds the camera open. Close other video apps and tabs first.
En vivo pero parece cubiertaPermission 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.

Referencia de Rendimiento

Códigos de Error Reales del Navegador

Nombre del errorDiagnósticoReparar
NotAllowedError (perm. concedido)Bloqueo a nivel del sistema operativoRevisa la configuración de privacidad de la cámara del sistema operativo.
NotAllowedError (perm. no concedido)Permiso del navegador denegadoHaz clic en el icono de la cámara en tu barra de direcciones.
NotFoundErrorNo se encontró ningún dispositivoRevisa los cables, el Administrador de dispositivos, o la deshabilitación a nivel del sistema operativo.
NotReadableErrorCámara en uso en otro lugarCierra otras aplicaciones/pestañas que usen la cámara.
OverconstrainedErrorDesajuste de restricciones, no bloqueadaNot actually inaccessible — request different settings.

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

Paso a Paso

Cómo Ejecutar el Diagnóstico

  1. Haz clic en «Ejecutar Diagnóstico» — no necesitas configurar nada.
  2. Responde a la solicitud de permiso si aparece una.
  3. Read the three-step readout: permission state, stream attempt result, and a frame-content check for physical obstruction.
  4. Sigue la orientación específica mostrada para el error que se haya detectado realmente, si lo hay.

Preguntas Habituales

Preguntas Frecuentes

¿Puede un sitio web saber si otra app está espiando mi cámara?
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.
¿Qué significa 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.
¿Cómo compruebo qué app está usando mi cámara en Windows o 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.
¿Por qué dice «permiso concedido» pero la cámara sigue sin iniciarse?
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.