DVB != HDMI. I believe DVB-T uses MPEG-2 or some variation. While HDMI video doesn't use a motion vector based encoding. So when you have errors with MPEG-2, i

DVB != HDMI. I believe DVB-T uses MPEG-2 or some variation. While HDMI video doesn't use a motion vector based encoding. So when you have errors with MPEG-2, it could be on B or P frame which results in the delta from the previous I frame being drawn incorrectly (or not at all). With HDMI, the error won't show up in a delta frame (because there aren't any), rather just white pixels.