The scrub bar is located below the Cinema's main controls and runs the entire width of the GUI.
The scrub bar has many more uses over and above the usual functionality of frame accurate positioning of the play-head, such as displaying information about the clip and, when appropriate, the memory cache. Note that unlike the transport controls described above, the scrub bar is not bounded by the "in" and "out" playback points.
You can scrub through a clip by dragging while holding down the left mouse button. You can also zoom the scrub bar by dragging while holding down the middle mouse button. When zoomed, dragging while holding down the right mouse button can be used to pan the scrub bar.
The various elements of the scrub bar are, from left to right, as follows:
The start of the frame range displayed at the left-hand edge of the scrub bar. You can't scrub to an earlier frame with the mouse. A new value can be typed into this control.
Click to reset the frame range displayed in the scrub bar to a particular value. By default, this is the start and end frames of the clip. However, right mouse clicking on this button brings up a context menu which allows other frame ranges to be selected such as the playback in and out frames and a user-defined customized frame range.
The end of the frame range displayed at the right-hand edge of the scrub bar. You can't scrub to a later frame with the mouse. A new value can be typed into this control.
In the scrub bar itself various colour-coded indicators are shown to mark particular frames. These are:
Play-head, i.e. the current frame.
Playback in and out points.
Frame markers. These show the locations of user-specified frame markers (described fully later in this chapter).
Bad frames. These show the location of problematic frames (described fully later in this chapter).
Edit points (only relevant if the Cinema is displaying a sequence of clips). These mark the locations in the sequence where the edits between individual clips occurs.
Clip processing start and end points. The default range of frames that will be processed by all of the effects unless overridden for a given effect.
Effect processing start and end points. The range of frames that will be processed for the current effect.
Tagged processing frames. Discrete frames that have been tagged for processing for the current effect.
Processed frames. The range of frames that have been processed for the current effect.
The last 4 indicators are fully described in the "Workbench" chapter of this manual.
If one or more indicator is present on a particular frame then they are displayed in the following order, with subsequent indicators overwriting earlier ones:
edit points, processed frames, effect processing start/end, clip processing start/end, bad frames, frame markers, tagged frames, playback in/out, the current frame.