Windows 8 No DXVA in NPVR

[Lao Pan]

I have discovered very high CPU usage in NPVR when using Direct show to play back Video - Videos that are playing back at 16 - 20% in GraphStudeoNext are running at 65-85% in NPVR (Enough to take the CPU Temp over 100C) This is WMV HD downloads and MKV Bluray Rips. I will have to do some testing this weekend - but in the meantime has anyone got any bright ideas. All was working well on vista :eek:

[whurlston]

Logs?

[pcostanza]

I have a question unrelated to your question Lao Pan......what tuner(s) do you have and did Windows 8 install them or did you have to manual install the drivers? I am curious if W7 drivers work in W8.

[Lao Pan]

Logs?

Yep I know but will do some further testing this weekendand get some logs - they were a bit messy but was using evr.

I have a question unrelated to your question Lao Pan......what tuner(s) do you have and did Windows 8 install them or did you have to manual install the drivers? I am curious if W7 drivers work in W8.

Once I got the network connection sorted - Turned DHCP server back on in the router and did a second install - I'd messed up a few settings the first time (And yes you can do a fresh install over a copy of 8 Upgrade no need to install your previous OS) All the drivers were installed Automagicaly that was the Videomate E700 PCI-E and PCTV DVB-T2 USB Nanostick - only Catalyst 12.10 and Realtek HD needed installing after.

[pcostanza]

Thanks much for the info.

[Lao Pan]

I have done a bit of testing - WMV 720p VC1 File - One Copy on Hard Drive on Local Machine - One Copy on Unraid Server Share on Gigabit network.
LAF Splitter Audio & Video Decoder (DXVA Native) EVR Renderer ATI HD5670 - I believe LAf Video is the only way to get WMV Acceleration on ATI Card in Direct Show ?
Verified being used from Log & Connect to remote graph

In GraphStudioNext
Local Copy 11-15% CPU usage
Server Copy 16-18% CPU usage

In NextPVR
Local Copy 35-50% CPU usage
Server Copy 65-80% CPU Usage = High Temp Shutdown after about 5 mins (Need better cooling)

NPVR appears to be using very high CPU usage for rendering the file and also for network access.

[hoborg]

LAV video decoder doesnot support VMW video decoding by its own. It usinq WMV DMO decoder do decode WMV.
SAF have full support of VC-1 DXVA decoding (over FFDshow DXVA decoder).

[sub]

I have done a bit of testing - WMV 720p VC1 File - One Copy on Hard Drive on Local Machine - One Copy on Unraid Server Share on Gigabit network.
LAF Splitter Audio & Video Decoder (DXVA Native) EVR Renderer ATI HD5670 - I believe LAf Video is the only way to get WMV Acceleration on ATI Card in Direct Show ?
Verified being used from Log & Connect to remote graph

In GraphStudioNext
Local Copy 11-15% CPU usage
Server Copy 16-18% CPU usage

In NextPVR
Local Copy 35-50% CPU usage
Server Copy 65-80% CPU Usage = High Temp Shutdown after about 5 mins (Need better cooling)

NPVR appears to be using very high CPU usage for rendering the file and also for network access.

When it comes to .wmv/.mkv files, NextPVR just askes directshow to play them, and Windows takes care of the rest (choosing decoders etc).

[whurlston]

I suspect it's due to not having DirectX installed and not related to actual playback, which was why I asked for logs.

[Lao Pan]

Finaly Logs Attached
Took a while to find something that wouldn't offend

Full Direct X was installed right at the start followed by web update - nothing extra added (apart from Bing Toolbar - damn missed that)

As said in post above in GraphStudio full DXVA in LAV Video with about 2% cpu for network overhead NPVR over 50% CPU + 25% for Network Overhead this on an AMD 5600 Dual Core.

Log is for playback from Local D drive