---
title: sampleDataTrackIDs
framework: cinematic
role: symbol
role_heading: Instance Property
path: cinematic/cnassetinfo-2ata2/sampledatatrackids
---

# sampleDataTrackIDs

The source metadata track IDs required to implement the video composition instruction protocol.

## Declaration

```swift
var sampleDataTrackIDs: [CMPersistentTrackID] { get }
```