Advanced Timeline editing
Note: Other approaches to the kinds of edit described here, making use of the overlay track, are covered in Two-track editing.
During most editing operations, Studio automatically keeps the clips on the various Timeline tracks synchronized. For instance, when you insert a scene from the Album onto the video track, the relative positions of all clips to the right of the insertion remain unchanged.
Sometimes, though, you might like to override the default synchronization. You might want to insert a new video clip into your project without displacing any clips of other types. Or you might want to edit video separately from its accompanying original audio – a valuable technique with several variations. See Insert editing and Split editing for more information.
Such special edits are possible using the track lock buttons along the right edge of the Movie Window in Timeline view. Each of the standard tracks (all except the menu track) provides a lock button.
A locked track is grayed out in the Timeline view, indicating that the clips on the locked track cannot be selected or edited in any of the three views; nor are they affected by editing operations on unlocked tracks.
Apart from the menu track, any combination of tracks can be locked.
Locking the title track, for example, prevents the duration of a title from being changed even when you trim clips on the main video track at the same time index.
When the title track is unlocked, trimming the main video clip above it automatically trims the title.