---
title: bitsPerBlock
framework: corevideo
role: symbol
role_heading: Instance Property
path: corevideo/cvpixelformatdescription/pixellayout/bitsperblock
---

# bitsPerBlock

Number of bits per pixel. If blockSize is greater than (1, 1) then this represents bits per block.

## Declaration

```swift
var bitsPerBlock: Int
```