Radeon cards corrupting H264 HD TV - and yes, they still do...

...at least in Denmark.

So, the problem is quite simple, but the solution...? I've bought a Radeon HD5750 card, and it took me hours to figure out that even though AMD/ATI's bragging about H264 decode acceleration, at least on Win7 64 all radeon cards simply can't decode the Danish DVB-T HD signal to a nowhere close to acceptable image quality. It's stuttering and pixelated, and no it's not the antenna. All the trouble shooting has been done, and the problem inarguably is in the way that AMD's hardware and Win7 are communicating. A part of the problem is that the problem is exactly in the middle, so neither AMD nor Microsoft want to solve it. They just point at each other.
Nvidia cards are not having any trouble at all.

I've followed desperate danish users (you can get links to these fora if you want) beg AMD to fix the issuse through their drivers, but only BBC HD and some others has been fixed. Danish DVB-T is still a no-go.

Sadly, the AMD forum admins and supporters seem to be in total denial or downright rude to the customers who ask for help. Polite questions get deleted and no meaningful answers are given at all, except for AMD pointing their finger at Microsoft.
This has been going on for around a year now, and AMD not even lists this as a known issue in their driver release notes - although being perfectly aware of it.

How, I ask, how can we get a reaction from AMD and an explanation on how they're going to fix this problem?

This error is very easily reproduced. Take some danish DVB-T HD TV content and play it on an ATI/AMD powered win7 pc. It's a horrible sight, but very visble.

So far I run my PC with AMD's H264 acceleration deactivated in my registry. It works, but what kind of fix is that?