To get the recording length, pause the recording and then press the blue button on the remote a couple of times to display the length at the top of the screen. If the total length is not the correct amount of time then you'll need to update your Hauppauge drivers to correct a bug that hoses the timeline (and thus skips).
i3-3570k, 8GB RAM, Win10 Pro, Nvidia GT710, HDHomeRun (OTA), NPVR 6.x On a clear disk, you can seek forever...