---
title: realTimePlayback
framework: MediaExtension
role: symbol
role_heading: Instance Property
platforms: [macOS 14.0+]
path: mediaextension/medecodeframeoptions/realtimeplayback
---

# realTimePlayback

A Boolean value that hints to the decoder to use a low-power mode that can’t decode faster than 1x real-time.

## Declaration

```swift
var realTimePlayback: Bool { get set }
```

## Discussion

Discussion The system sets this value to false during all uses other than 1x forward real-time playback, including seeking, playback at other rates, and export. This hint only applies to the current decode session. If multiple instances of a decoder operate at the same time, it may not be acceptable to use a low-power mode if the system can’t sustain real-time playback across all the streams.

## See Also

### Inspecting frame decoding options

- [doNotOutputFrame](mediaextension/medecodeframeoptions/donotoutputframe.md)