If you want 'chase play' then use the internal vdr player by accessing the "Recordings' menu from the internal vdr OSD main menu...select the recording you want to watch and hit 'OK' to play it...this recording can continue to grow in size as you watch it (hit the 'OK' button while watching the recording to see the playback OSD...notice the time code on the right is growing).
Thanks for the reply, should have described that better
I am trying to replay an ongoing recording as you say. And I am trying that using the recordings menu directly in VDR
The timecode is growing, but replay stopps at the point where the recording is when I start replay using the recordings menu of VDR ...
So something must not be right - I just have no idea what it is ...