Hi,
I am working on an application in Android and I have to manipulate the data coming from the preview.

I read that the default frame rate is 15fps.
I measured the time from one call of the onPreviewFrame function and the next one and I noticed that I got different times depending on the size of the preview (at the moment no other operations are done in this function).
How can it be possible?
I thought it would be called at any frame so 15 times in a second (approximately every 66ms).

Can someone help me please?
Thank you!
Maurizio