<!--
{
  "availability" : [
    "macCatalyst: 13.0.0 -",
    "macOS: 10.9.0 - 10.15.0"
  ],
  "documentType" : "symbol",
  "framework" : "MediaLibrary",
  "identifier" : "/documentation/MediaLibrary/MLMediaSource/mediaSourceIdentifier",
  "metadataVersion" : "0.1.0",
  "role" : "Instance Property",
  "symbol" : {
    "kind" : "Instance Property",
    "modules" : [
      "Media Library"
    ],
    "preciseIdentifier" : "c:objc(cs)MLMediaSource(py)mediaSourceIdentifier"
  },
  "title" : "mediaSourceIdentifier"
}
-->

# mediaSourceIdentifier

A unique identifier for the media source.

```
var mediaSourceIdentifier: String { get }
```

## Discussion

For a list of possible media source identifiers, see [Media Source Identifiers](/documentation/MediaLibrary/media-source-identifiers).

---

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)