---
title: videoCompositionTrackIDs
framework: cinematic
role: symbol
role_heading: Instance Property
path: cinematic/cnassetinfo-2ata2/videocompositiontrackids
---

# videoCompositionTrackIDs

Source video track IDs required to implement the video composition instruction protocol.

## Declaration

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