android mute camera shutter sound?

Question

I am using this

camera.takePicture(null, rawCallback, jpegCallback);

but with some devices it makes a sound when the camera captures the image.<

Answer 1

As harism mentioned, this is not possible to do on some devices, because there are legal requirements in some markets (Japan, for example) that taking a picture always results in an audible shutter sound.

The stream type used for these types of sounds is STREAM_SYSTEM_ENFORCED, and there's a read-only system property that determines whether or not you can mute such a stream.