A subframe has 1/80 the duration of a video frame and is thus a more precise unit of reference when editing audio at the sample level.
You can view subframes in the timecode display of the Dashboard. In the General pane of the Final Cut Pro Preferences window, click the Time Display pop-up menu and choose the subframe option (HH:MM:SS:FF + Subframes).
You can use compound clips to group any combination of clips in the timeline or the browser, and nest clips within other clips.
Compound clips can contain video and audio clip components, clips, and other compound clips. Effectively, each compound clip can be considered a mini project, with its own distinct project settings. Compound clips function just like other clips: You can add them to your project, trim them, retime them, and add effects and transitions.
When you add media (clips) to the contents of a standard clip, the clip automatically becomes a compound clip.
Compound clips have many uses. You can:
The browser displays clips, projects, photos, titles, or generators, depending on the item selected in the sidebar. The sidebar appears to the left of the browser and contains three panes for selecting different types of media: the Libraries sidebar, the Photos and Audio sidebar, and the Titles and Generators sidebar. When you select an item in the sidebar (such as an event containing clips, or a category of sound effects or 3D titles), the item’s contents are displayed in the browser.
You select clips or portions of clips in the browser to work with them. You can sort items in the browser by creation date, name, and duration. You can also view the browser contents as filmstrips or in a list.
Connected clips are attached to clips in the primary storyline in the timeline and are used for cutaway shots, superimposed or composited images, and sound effects. Connected clips remain attached and synced until you explicitly move or remove them. A sequence of connected clips is a storyline.
