Editing Clips and Sequences > Navigating the Timeline >

# About Timeline Tracks and Versions

Different areas on the timeline form a hierarchy that allows you the flexibility to composite on multiple tracks while maintaining different video streams or versions of your work.

Think of a version as a single stream of video on the timeline. Each version can have multiple tracks. While you can also use sequences on the timeline to accomplish similar results, use versions for the following:

- Compare two streams, such as an offline and online version. You can use the player in a split view to compare versions.
- Create matte containers with an Axis timeline effect, to help you key using a separate fill and matte, for example.
- Create different versions of a track or tracks, to try out different effects without affecting each other.

Tracks on the timeline are stacked vertically within a version to help you composite.

#### Topics in this section

- Track Indicators and Tools
- Adding Tracks and Versions
- Moving, Resizing, and Deleting Tracks

#### Related Information

- Comparing Tracks in Split Screen
- About Timeline Patching