Why FPS is not same as original camera app

Question

I tested with original camera application (video mode) comes with Samsung Galaxy Tab 8.9. The saved front camera video able to achieve 24 fps, 640x480. (By looking at the pr

Answer 1

Camera FPS depends of lighting conditions and AutoExposure parameter. For getting fixed frame rate in all lighting conditions (from API 14, Android 4.0):

Camera.Parameters p = camera.getParameters();
p.setPreviewFpsRange( 30000, 30000 ); // for 30 fps
if ( p.isAutoExposureLockSupported() )
     p.setAutoExposureLock( true );
camera.setParameters( p );