HD SDI DVR Qvis HD SDI DVR 28/04/2012 by blogadmin The new Qvis HD SDI DVR and camera range will be on sale and available to buy here in the UK from May 2012. The Qvis HD SDI DVR will have lots of juicy features as standard and these will include, D1 imaging with 25fps recording on all channels. H.264 compression this will enable the […] Read more » Dahua HD SDI DVR HD-SDI cameras QVIS QVIS HD SDI DVR