HDHR Prime - no Live TV or playback of recordings

[dcl]

I am new to NextPVR and am having trouble with a SiliconDust HDHomeRun Prime HDHR3-CC. My problem is no picture or sound during Live TV or playback of a recording, although I can manually record a channel with NPVR and externally view the resulting .ts file with VLC media player (good picture and sound). I have searched the forum and tried many suggestions without complete success.

The Comcast cablecard appears to be successfully activated. Using the SiliconDust HDHomeRun Setup utility, NextPVR is selected as the Main Application, the status of the three tuners is "OK", and each tuner has successfully scanned several hundred channels. Channels are showing excellent picture and sound quality using the HDHomeRun QuickTV utility.

In NextPVR, the three HDHR devices have been setup and each has successfully scanned 525 channels. The ATSC and QAM devices were not setup. For rendering, video is set to EVR and audio and music are set to default. For decoding, MPEG2 video is set to Microsoft DTV-DVD Video Decoder, MPEG1 audio is set to Microsoft DTV-DVD Audio Decoder and the others are disabled (I've read that I may need to set AC3 Audio to something like AC3Filter to get sound at some point). I've not yet setup EPG/XMLTV/Schedules Direct so I have no TV Guide.

My computer runs Windows 8 64-bit with an Intel i7-3770 cpu and uses the embedded Intel HD Graphics 4000 processor for video. The NextPVR.exe, NDigitalHost.exe, and NRecord.exe were each added as allowed apps in Windows Firewall (same problems with the firewall completely disabled). No other firewall is installed. NPVR is version 2.5.9 and no plugins have been installed.

Log files are attached. Key events are as follows:
about 19:28 - begin Live TV, channel 9, KUSA (no picture or sound)
about 19:28:48 - change to channel 8, GovtAcc 1 (no picture or sound)
about 19:28:57 - change to channel 7, KMGH (no picture or sound)
about 19:29:30 - exit Live TV, select Recordings menu
about 19:30 - begin manual recording (about 2 minutes) of channel 4, KCNC
about 19:37 - begin playback of 19:30 manual recording (no picture or sound here, but verified OK externally with VLC)

One error in the log files is "Error initialising Direct3D: ...". However, the windows "" utility reports DirectX 11 is installed and Direct3D acceleration is enabled.

Any help will be appreciated.

[sub]

In the logs it looks like the 'Microsoft DTV-DVD Video Decoder' decoder is failing to hookup. This will be the case with Win8 unless you have the Media Center addon installed (to enable the decoder). I'd try a different MPEG2 decoder.

Usually in the US you'll also need an AC3 decoder. As you've mentioned, you could install and select AC3Filter for this.

For the 'Error initialising Direct3D', have you installed the directx9 runtime? http://www.microsoft.com/en-us/download/...aspx?id=35. I'm pretty sure the DirectX11 runtime doesn't include it.

[dcl]

That solved the video problem. I changed the MPEG2 decoder to CyberLink Video/SP Decoder (PDVD10) and I now have video!

I also installed the AC3Filter decoder for AC3 audio and now have sound. For some reason the CyberLink Audio Decoder (PDVD10) shows up as a selection but does not work.

I installed DirectX 9, which removed that error message in the log file.

Thanks for the help sub!