Operation Manual

Chapter 3: Full-Screen Presentation mode
51
Editing Clips in the Timeline
‘Editing clips’ is a broad term that encompasses a number of different functions: you can, for
example, trim unwanted sections from video or audio clips, adjust the color of a video clip, and
more. Since your presentation may contain audio portions as part of the imported video clips as
well as independent audio files in the Audio track - all of which have probably been recorded at
different levels - StreamAuthor also allows you to mix the audio levels of these different clips to
produce a more harmonious sound track for your presentation. All of the editing processes that
you can perform on the different types of media clips are described in this section.
Split a Video/Audio Clip
You can split a video/audio clip into two clips at the current position of the Timeline slider.
Splitting a video/audio clip does not delete any portion of the content. Both halves of a split clip
can be stretched back to any length up to the original duration.
To split a video/audio clip, do this:
1. Select a clip in the Timeline.
2. Drag the Timeline slider to the point at which you want to split the clip.
3. Click . The clip is split into two independent clips that can be moved or modified
separately in the Timeline.
Trim a Video/Audio Clip
Video/audio clips captured from external capture devices often contain unwanted portions that
can easily be removed using the Trim function.
To trim a video/audio clip, do this:
1. Select the clip in the Timeline.
2. Drag the Timeline slider to the point at which you want to perform the trim, then do one of
the following:
• Click to trim video to the left of the current Timeline slider position.
• Click to trim video to the right of the current Timeline slider position.