mkvs windows 7 h/w accel

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hasole

382 posts

Ultimate Geek

# 34681 27-May-2009 21:50

Excuse my ignorance but can mkv play back using the haler codec make use of h/w acelleration?

mikerussellnz

283 posts

Ultimate Geek

# 218573 28-May-2009 10:24

Not sure about Windows 7, but I haven't had any luck with MKV's on Windows XP with NVIDIA cards. Seems that a lot of people that encode MKV files don't adhere to the Blu Ray / DVB standards with regards to Reference Frames.

The NVIDIA Linux driver seems a lot less fussy about that and plays all my MKV's with VDPAU acceleration ok.

hasole

382 posts

Ultimate Geek

# 218583 28-May-2009 10:38

I've got a pentium d 805 2.66 1mb l2 cache proc with 1gb of ram and the playback is choppy at 1080p resolution. surely the box isn't under spec?

garvani

1874 posts

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# 218600 28-May-2009 11:17

i have mkvs playing in media player classic with h/w acceleration under windows 7 with a ati 4850.. 1080p playing with 5% cpu

hasole

382 posts

Ultimate Geek

# 218606 28-May-2009 11:28

I've got a 4350 ati

garvani

1874 posts

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# 218614 28-May-2009 11:35

4350 will be all good.. it will be capable, you just have to go through the hassle of setting it up (20 mins work)

geekiegeek

2231 posts

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# 218616 28-May-2009 11:38

It will work if you use the CoreAVC codec 1.9.0 or above with an nvidia card that supports CUDA. I have also had it work using the PowerDVD codec. This is using MediaPortal and vista (although the first solution should work for any OS)

Basically if you use a codec that does hardware H.264 decoding it should work as .mkv is just a container like .ts

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hasole

382 posts

Ultimate Geek

# 218713 28-May-2009 15:02

Ok, just played transformers 1080 mkv. cpu cores around 50%. def not h/w offloading. I'll try that coreavc

garvani

1874 posts

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# 218788 28-May-2009 16:12

dont worry about coreavc its not needed! and isnt free. there is a guide on how to setup media player classic home cinema.. ill post it when i get home, in a bit over an hour, its really quite straight forward. You just need to disable some internal filters, enable some other setting and it works.. takes 5 mins to do and really is quite simple.

Also, your videos need to be dxva capable videos for hardware decoding to work

hasole

382 posts

Ultimate Geek

# 218792 28-May-2009 16:15

For the life of me I cannot get my 1080 transformers mkv to playback sound in media player, it can in vlc though.. other mkvs are ok

garvani

1874 posts

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# 218794 28-May-2009 16:17

Found the article without going home! Bonus :)

Link to Article

Follow that guide word for word, no shortcuts!!! and you will be good to go

Edit: I struggled and struggled for a good couple of days with many codecs and other shiz, until i found that guide.. ive followed it twice now for my windows 7 builds, and had it working flawlessly in less than 5 mins.. it works, and is easy..

Edit2: Media player that comes with your computer is NOT media player classic home cinema, you have to download it from that site in the guide.. Thought i should point that out.. let me know how you go anyway

geekiegeek

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# 218874 28-May-2009 18:01

Seems that a lot of people that encode MKV files don't adhere to the Blu Ray / DVB standards with regards to Reference Frames. .

I have seen this happen also (downloaded the terminator series and couldnt get picture - just sound) - you can re-package the file updated to perform h/w decode but it takes a bit of time and pissing about.

Thats one plus with CUDA that its not using h/w decode its just passing the processing to the GPU instead of the CPU so it doesnt matter how its encoded/packaged.

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