I have tried asking on a few platforms and have had limited responses so I thought I would try to ask again, in other words, because I am genuinely just curious. Here is the scenario.
Add HD 1080P 59.94 FPS video to timeline
Cut and discard end at 02:49,21
Verify duration of 02:49,21 and end point at 02:49,21
Move video forward 00:03,00 (In other words, add a 3 second black color clip to the beginning)
End point now showing 02:52,22 but same duration of 02:49,21
???
Why do I get that added 00:00,01? It only does it with this video. Other 4K UHD 59.94 FPS videos do not do this.
Is this just a matter of the software interpreting a video that is not an even 60 FPS. Can I just ignore it? Everything looks fine. The duration of the clip stays the same. It is just that the end point increase by 00:00,01.

