Yes, all recordings fully accessible. Everything on freeview is in the clear. Some channels play tricks with by messing with the IDs to hide the picture & sound, plus some are just placeholders for streaming services (those with channel nos between 250 and 299 and the adult PPN channels).

VLC will play pretty much anything anyway, as will kodi.

If you can though, consider freesat. More channel choice, often in better quality, and you can get boxes with FBC tuners which give you access to more tuners, without more wires. At present there are no FBC tuners for DVB-T/T2 (freeview). Just for clarity Freeview = DVB-T/T2 broadcast over TV aerial, Freesat = DVB-S/S2 broadcast over a satellite dish.