<!--
{
  "availability" : [
    "iOS: 4.3.0 -",
    "iPadOS: 4.3.0 -",
    "macCatalyst: 13.1.0 -",
    "macOS: 10.7.0 -",
    "tvOS: 9.0.0 -",
    "visionOS: 1.0.0 -",
    "watchOS: 1.0.0 -"
  ],
  "documentType" : "symbol",
  "framework" : "AVFoundation",
  "identifier" : "/documentation/AVFoundation/AVPlayerItemAccessLogEvent/playbackStartOffset",
  "metadataVersion" : "0.1.0",
  "role" : "Instance Property",
  "symbol" : {
    "kind" : "Instance Property",
    "modules" : [
      "AVFoundation"
    ],
    "preciseIdentifier" : "c:objc(cs)AVPlayerItemAccessLogEvent(py)playbackStartOffset"
  },
  "title" : "playbackStartOffset"
}
-->

# playbackStartOffset

The offset, in seconds, in the playlist where the last uninterrupted period of playback began.

```
var playbackStartOffset: TimeInterval { get }
```

## Discussion

The property corresponds to “c-start-time”.

The value of this property is negative if unknown.

This property is not compatible with key-value observing.

---

Copyright &copy; 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)