Applying Switches to Events
Event switches determine the behavior of events on the timeline.
From the Edit menu, choose Switches and choose a command from the submenu to toggle event switches on or off.
You can also adjust event switches in the Event Properties dialog.
Select the event(s).
From the Edit menu, choose Switches (or right-click an event and choose Switches from the shortcut menu).
Select the type of switch you want to apply to the event:
Excludes the selected event from playback.
Muted events are darkened on the timeline to indicate their muted state. In the following example, the middle events are muted:
Locks an event so that it cannot be moved or edited.
Enabling the Loop switch on an event will allow you to drag the right edge of the event out and have it repeat the file over and over rather than inserting silence.
Reverses the phase of the sound data. Although inverting data does not make an audible difference in a single file, it can prevent phase cancellation when mixing or crossfading audio signals.
Maximizes an audio event’s volume without clipping.
If you want to recalculate the normalization value for the selected event, click the Recalculate button on the Event Properties dialog to determine the normalization value for the selected event. If you trim or extend a normalized event, you will want to recalculate the normalization to account for the different audio levels that may have been exposed.
Maintain Aspect Ratio
Prevents aspect ratio distortion (stretching of video frames) when the length-to-width ratio between the source media and project’s frame size are not the same.
Reduce interlace flicker
This switch can be useful in cases where the source material didn’t originate as video and contains extremely high spatial or temporal frequencies.
When you watch the rendered (interlaced) output on video of this sort of media, you may see flickering or crawling edges if this switch is not applied
Enable this switch when using imported images that were not created using a video camera (such as photographs) or when using generated media or text.
Select a radio button to determine how video frames will be resampled when the frame rate of a media file is lower than the project’s frame rate. This can occur either when the event has a velocity envelope or when the frame rate of the original media is different than the Frame rate setting on the Video tab of the Project Properties dialog.
With resampling, the intervening frames are interpolated from the source frames, much like a crossfade effect between the original frames. This may solve some interlacing problems and other jittery output problems.
Resampling occurs only when an event’s calculated frame rate does not match the project frame rate and the project frame rate is 24 fps or greater.
The calculated frame rate takes into account any changes made to event speed with velocity envelope, playback rate, and undersample rate.
The event is always resampled, regardless of its frame rate or the output frame rate.
No resampling will occur.