The problem is as per the attached photo of a still frame from a TiVo recording. What happens is the following:
On some live and recorded programmes (any channel), I occasionally get interference/artefacts appearing in dark scenes, such as the attached from a still. They can be very visible. Ignore the vertical mark, that's part of the actual picture. I don't know how the Virgin logo on Ch999 is supposed to appear, but I've attached a pic of that as best I can. Should that jagged circular frame be there?
This is not a problem with HDMI cables or my TV, as I've connected a different TV using a different HDMI cable and it's just the same.
I thought the picture on HD was supposed to be free from artefacts such as these?
Re: Concentric circles appear in background picture
Thanks for your response.
The picture on channel 999 is consistent with the picture I'm seeing at this end to be honest so I would say that is how it looks. The other issues you're having though do seem strange. The test results I'm getting back don't seem to indicate any problems although I wouldn't expect to see the artefacts and lines you're seeing on the HD feed. I think It's probably best if I organise one of our engineers to come around and have a look at this for you as you're getting the same result on a different TV and HDMI cable. I will send you a private message shortly (purple envelope top right) so we can discuss this further.