The nDVR documentation says:
For example, if you set the WindowDuration value to 3 hours, the recording will be 3 hours long. As time continues past 3 hours but is still less than the 30-hour maximum, the recording will be the last 3 hours and the earliest chunks are deleted as time progresses. Note: Purged chunks to maintain the WindowDuration amount of time don't count toward the 30-hour maximum.
So, what exactly happens when WindowDuration is set to 3 hours, but the stream lasts much longer than 30 hours? Does DVR stop recording after 30 hours? OR Will the recording continue forever, and last 3 hours will always be available?
Also, is WindowDuration limiting the HDD space required for a DVR recording?
The documentation is quite confusing on this matter.