---
title: isBuffering
framework: AVKit
role: symbol
role_heading: Instance Property
platforms: [iOS 27.0+, iPadOS 27.0+, Mac Catalyst 27.0+]
path: avkit/avplaybackuserinterfaceplaybackcontrollable-9he54/isbuffering
---

# isBuffering

Indicates whether the media source is currently stalled waiting for data.

## Declaration

```swift
@MainActor var isBuffering: Bool { get }
```

## Discussion

Discussion Returns true when the source cannot immediately sustain continuous playback. This may occur both before isReady becomes true during initial loading, and after isReady is true during mid-playback stalls. When true, isPlaying may still be true, indicating that playback should resume automatically once sufficient data is available.