Is there an easy way to edit the start point for a recorded programme?

So I’ve been trying out Plex DVR for a few days and it’s been working pretty well so far.

My only problem is that many of the programmes I record are kids shows from CBeebies (I’m in the UK) who are hopeless at sticking to their schedule with any accuracy.

That means that recordings frequently have a minute or more of the previous programme at the front.

Is there any way to tell Plex to alway start playback of a recording at a set point, or to trim a chunk off the beginning?