Is there any card that can be recomended and that works well? - Or is there
any other solution than buying a fullfeatured card only for the OSD?
I think the Nova-T works quite well for me. Small "locks" in the pictures
sometimmes only.
Hauppage WinTV DVB-T for approx 268 EUR (A Swedish company; www.dustin.se)
Technotrend DVB-T 1.2 229 EUR (www.dvbshop.tv)
You could buy a full featured DVB-s (satellite) or DVB-c (cable) card as
primary interface (around 180 EUR or cheaper from ebay) and then use vdr to
feed the primary card with data in transfed mode. Note however that
currenly the drivers have a problem with no signal on the primary card and
ARM crash. This will hopefully be fixed in the future but until then you
either need a strong statellite or cable signal on the primary card.