Block linear format

Hello, I am using jetson multimedia tools to process video image resize, I just want to know how to get the block pitch and height information in block linear format by using jetson multimedia api? Is the performance of block_linear surface better that pitch format for processing nvbuffer?

It is duplicate of

If you don’t need to do postporcess to the buffer, suggest keep the buffers in blocklinear.

Information about block linear format is not public.