To remove advertisements or unwanted scenes from a video clip:

• Place the video clip on a sequence and make sure it is selected.
• Move the current sequence playback position to the beginning of the unwanted scene.
• Select Sequence -> Split Tracks -> Split Selected Clip(s), or click the right hand side of the Split button (scissors icon) under the sequence preview and select Split Selected Clip(s).
• Move the current sequence playback position to the end of the unwanted scene.
• Select Split Selected Clip(s) again.
• Select the unwanted scene and select Sequence -> Cut, or right-click on it and select Delete Selected Clip(s).
• Move the remaining clip to fill the gap.