Vero4K: want to use as PVR / view OTA broadcasting

But in your screenshot, it says /diskstation/volume2/video/PVR. The notation NFS://ip of NAS/… is specific to kodi and will not be understood by tvheadend. I suggest you first set that path to a local directory (say /home/osmc/TVrecordings - create the directory first) and make sure it’s all working with that.

Then I suggest you mount the NAS recording directory in your vero’s filesystem. I mount mine at /mnt/nasdisk/TVrecordings for example. Have a look here: