Tvheadend

Hi all, I have a little 'feature' of well it could be Tvheadend or Kodi, but between them they have a teddy in the corner moment when I record the first broadcast of the evening from Freesat BBC Four. I have a four minute offset so the broadcast starts from what was CBBC earlier in the day.
The recording won't play on kodi but will in a browser from the gui. My solution is to copy the file to a USB stick and sneakernet it to the HTPC.
If I remove the offset then this doesn't happen, but then I occasionally miss the start of a program.

Anybody got a better way of overcoming this clitchette ?

Strebor