NV12 format and UV plane

The NV12 format is subsampled as 4:2:0

The total size of a frame is W x H x 3 / 2 Where W is width and H is height.

1 frame in vga resolution is 460800 bytes, where

• Y-part is 640x480 bytes
• Cb-part is 640*480/4=76800 bytes
• Cr-part is 640*480/4=76800 bytes

Hope this answers your question...