---
title: previousFrameCount
framework: videotoolbox
role: symbol
role_heading: Instance Property
path: videotoolbox/vttemporalnoisefilterconfiguration/previousframecount
---

# previousFrameCount

Maximum number of past reference frames that the processor can use to process a source frame.

## Declaration

```occ
@property (nonatomic, readonly) NSInteger previousFrameCount;
```

## See Also

### Inspecting the configuration

- [frameWidth](videotoolbox/vttemporalnoisefilterconfiguration/framewidth.md)
- [frameHeight](videotoolbox/vttemporalnoisefilterconfiguration/frameheight.md)
- [nextFrameCount](videotoolbox/vttemporalnoisefilterconfiguration/nextframecount.md)
- [sourcePixelBufferAttributes](videotoolbox/vttemporalnoisefilterconfiguration/sourcepixelbufferattributes.md)
- [destinationPixelBufferAttributes](videotoolbox/vttemporalnoisefilterconfiguration/destinationpixelbufferattributes.md)
- [frameSupportedPixelFormats](videotoolbox/vttemporalnoisefilterconfiguration/framesupportedpixelformats.md)