From HyperCaster v5.5+, you are able to trim your video directly from the Preview pane. This is a virtual, non-destructive trim for playout purposes. The original video file remains intact.
In the preview pane, drag and drop the ends of the green toolbar to select new in and out points for the video.
As you do, you will see the timing changes reflected in the File Information window on the left of the media page.
Click on the time marker’s forward/backward buttons to move the start or end points forward or backward, one second at a time.
You can also trim a video by editing the Offset and Runtime directly in the File Information fields.