Inserting videos that have a shorter duration that the timeline

I've encountered the same problem; it seems to become more of an issue as the length of a video clip increases. I would like to know how Storyline calculates the displayed duration and how it takes frames-per-second (FPS) into account. For example, the number of frames in a 30-second clip can be:

• 15 FPS - 450 frames
• 24 FPS - 720 frames (traditional film)
• 25 FPS - 750 frames (PAL, SECAM)
• 30 FPS - 900 frames (NTSC)
• 60 FPS - 1,800 frames

The timeline in Storyline's video editor is largely useless, IMHO, as it completely ignores 25+ years of digital video editor convention (which was based on decades of analog video editor convention). Below 1 second, the number of frames is displayed, not 1/10's, 1/100's or (inexplicably) 1/1000's of a second.

It reminds me of multiple "conversations" I had as a Value-Added Reseller with Adobe, Apple, and Radius engineers in the early 90s. While Radius "got it," Adobe could not seem to grasp the concept of a 29.97 NTSC frame-rate (the 3/100 of a second needed for the black-burst/video sync/gen lock signal), insisting 30 FPS was exactly the same as 29.97 FPS. It wasn't until version 5 of Premiere that Adobe FINALLY acknowledged 29.97 FPS and could officially state Premiere was, in fact, "broadcast quality."