private static long summarizeFrameDimensions(VideoRenderer.I420Frame frame)
{
long ret = frame.Width;
ret = ret * MAX_DIMENSION + frame.Height;
ret = ret * MAX_DIMENSION + frame.YuvStrides[0];
ret = ret * MAX_DIMENSION + frame.YuvStrides[1];
ret = ret * MAX_DIMENSION + frame.YuvStrides[2];
return ret;
}