Configuring the Track Editor

You can configure the Track Editor to suit your needs. You can set the size of the streams, how many of each stream type appear, and the timeline zoom amount.

Viewing the Streams

A track can contain up to 49 streams total, but viewing this many streams at once requires some effort. It’s unlikely that you’ll need to view more than ten streams at once; depending on the types of projects you create, you may use only two or three streams. There are three ways to control how many streams appear.

  • You can change the size of the Track Editor’s quadrant. You can even drag the Track tab into its own window. See Working with the Quadrants for more information.

  • You can use the Track Editor’s separator bars to control how many of each stream type appear. For example, if you do not plan to add subtitles, you can hide the subtitle stream area by dragging the separator bar above the subtitle area to the bottom of the window.

  • You can select a different stream height. This changes the height of the streams as they appear in the Track Editor. This can be useful if you want to see larger or smaller thumbnails of the video at the markers.

Using the Stream Configuration Buttons

The Track tab includes a set of controls that you can use to quickly change which streams appear. The size of the Track tab determines how many streams appear.

To choose which streams appear
Do one of the following:
  • Click the video icon to show only video streams.

  • Click the audio icon to show only the V1 stream and the audio streams.

  • Click the subtitle icon to show only the V1 stream and the subtitle streams.

Figure. Track Editor showing the stream view select buttons.

If you select more than one of these views at the same time, the separator bars move to show as many of the selected streams as possible. Once you select one of these views, you can drag the separator bars to customize the stream types that are displayed.

Setting the Timeline Zoom

The Track tab contains a zoom control you can use to expand or contract the timeline. When working with large projects, you often need to be able to expand the timeline in order to set a marker or insert a subtitle. Using the zoom control in conjunction with the scroller at the bottom of the timeline allows you to configure the timeline so that it provides enough detail to work with.

Figure. Bottom part of the Track Editor showing the timeline zoom and scroll controls.
To use the zoom control
Do one of the following:
  • Drag it to the right to zoom out, showing more of the timeline. If the playhead is not visible, the timeline scroller automatically jumps to a position that does show it.

  • Drag it to the left to zoom in, showing less of the timeline but more detail in the part that shows. If the playhead is not visible, the timeline scroller automatically jumps to a position that does show it.

Hold down the Shift key while dragging the zoom control to prevent the scroller from automatically changing its position to show the playhead.

You can also set the timeline zoom using keyboard shortcuts.

To zoom using keyboard shortcuts
Do one of the following:
  • Press Command-Hyphen (-) to zoom out on the timeline. If the playhead is not visible, the timeline scroller automatically jumps to a position that does show it.

  • Press Command-Shift-Hyphen (-) to zoom out without moving the scroller to show the playhead.

  • Press Command–Equal Sign (=) to zoom in on the timeline. If the playhead is not visible, the timeline scroller automatically jumps to a position that does show it.

  • Press Command–Shift–Equal Sign (=) to zoom in without moving the scroller to show the playhead.

  • Press Shift-Z to zoom the timeline out to its maximum.

  • Press Shift-Option-Z to fit the currently selected clip into the Track tab.