Holy crap -- T420 Intel HD DXVA

Apparently Intel drivers do not support GPU decoding right now?!?! My 1080p MKVs are completely blocking, artifacty, and unplayable in DXVA mode. What is going on?


This is with both MPC-HC and VLC. VLC plays the video fine with no hardware acceleration. This is unacceptable and I will have to return the product if this is the case. :/

 

It's not the GPU's fault, it's MPC-HC's codec's fault. Disable the H.264 DXVA and non-DXVA codecs in MPC-HC and let it auto detect. It should pick up the Microsoft DVD-DTV Video Decoder or something as the codec, and that works 100% flawlessly.

 

Omg omg! lol - that works, thank you. I don't know what it picked up instead but I did install ffdshow so I am guessing it is picking up something from there. And the better news is I can still use the shaders MPC provides (another vital thing for me). WHEW!!!!!

Thanks. I was about to flip out as I bought this to push HD video to my HDTV and it would have been a disaster had that failed.

I owe you my life! Almost.

 

It's because the Intel GPUs use a a non-standard DXVA compared to nVIDIA and ATI/AMD..

You can find out by opening the video in MPC-HC and checking the 'Play-> Filters' menu.

 

Thanks. Apparently it is the Microsoft DVD-DTV Video Decoder. I am guessing that is not the ideal solution for the codec community but I am glad it seems to work 100%, shaders and all. Actually works a lot better than my 780G ATI 4200HD chipset.

Is MPC-HD still trying to work with Intel to fix DXVA or has that been abandoned? Seems they were communicating with Intel last year, or so the doom9 forums say. Guess no progress was made?

Also.. do you know how well the Intel chipset works with Youtube acceleration? Is there a similar problem?

 

No problem, glad I could help. Like namaiki said, you can click Play -> Filters to check out what it is using.

I didn't know that; that's interesting. When I got my W520, I just thought that if I couldn't do it with the Intel iGPU, I'll just use my Quadro 1000M for DXVA.

 

Just install CCCP pack and use windows media classic for the best combo ever.

 

I generally use madVR which doesn't support DXVA, but otherwise I still would not use DXVA as my CPU is stronger than my GPU for video.

Nothing that I've heard.

You can check Youtube acceleration by right-clicking the video and clicking 'Show video info'.

For a while, my PC always reported 'undefined video rendering/decoding' but now it just seems to report software decoding for both my Intel and nVIDIA GPU. (edit: I need to use an Intel graphics driver 2021 or newer for Flash acceleration - currently 1994)