This may well have been done to death elsewhere - please be gentle with me as I'm not familiar with this forum's tools and am proceeding with L plates firmly in place!
I had a previous version of the Humax freeview box on which it was possible to edit recorded programmes to e.g. delete space taken up by commercial breaks.
Looking through the instruction manual of my newer freeview box, there does not appear to be any text covering this topic.
I'd be really grateful if any of you knowledgeable folks could let me know if this is possible and if there are any instructions available to let me know how to do it. I have realised that the 500gb hard drive will soon be full so thought it worth trying to trim down the size of files before worrying about how to move files to my mac, which I'm sure is an altogether more complicated process!!