You are two version behind on your DirectX. You have Ver9
Make sure you have the latest codecs like K-lite and FFdshow, (did not see that in your specs in the directshow section) I think the codecs not being up to date are the reason you can only do avi.
Your ATI driver looks like it got last months update.
I think if you were using it before assuming with little issues, and not now with a clean OS install, more than likely updating everything and getting it current will help especially those codecs and directx.
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Windows 8 Pro 64 bit
CyberLink PowerDirector 10 Tutorials
PDtoots PowerDirector Tutorials
**NOTICE**
When you are asked to provide a DXDIAG you go the following link and do part "B". Your posted specs are NOT what we are looking for as they tell us nothing. The specs on the box of your computer mean nothing. The DXDIAG shows us how your computer is configured as it runs.
DXDIAG Link