Stuttering issues (Index - Steam VR)

noname128

Philip you mean i klite lav filters? I've tried each combination. Nvidia cuvid seems to work the best

Philip

noname128 If you go to windows task manager with your video playing on the background, is GPU loaded?

noname128

justsomedude101
In the app I'll switch off the direct show filter and it will just come back on. Or if in Whirligig I try a different media path I get some kind of v9 error message. I have tried the SLR app and Playa and I don't notice any difference in performance

justsomedude101

noname128 Sadly the last idea I have is to uninstall your HVEC codecs and LAV filters, restart your system, and reinstall both. If that doesn't work, hopefully Philip or the support team can help you out, and imagine there are at least a few different subreddits that you could post on that might be able to help you out.

MikeTheTV

noname128 In the app I'll switch off the direct show filter and it will just come back on

I was in the EXACT same situation as you. Using the Index/Steam VR, RTX 2070, I had the LAV filters installed (using the recommended link from the DeoVR/SLR App), and "Direct Show" was always forced on, and any video around 3000p or greater would stutter every few seconds, yet the frame rate reported by SLR App stayed high.

This is what I did to fix my situation:
Uninstalled the recommended LAV filters (do not reinstall)
Installed the "K-Lite Standard" codec pack from https://codecguide.com/download_kl.htm (left all settings default during and after installation, no need to change anything at all.)
Uninstalled "HEVC Video Extensions from Device Manufacturer" from the Windows Store
Uninstalled "HEVC Video Extensions" from the Windows Store
Re-installed only "HEVC Video Extensions" from the Windows Store

After that, I was able to turn off Direct Show and it would stay turned off. And all 3000p+ videos have played smoothly since then (downloaded, not streamed).

noname128

Philip
It shows gpu load at about 56% and cpu at around 20%.

noname128

MikeTheTV
great suggestions! I followed them exactly and it didn't help 🙁 .... like direct show is still forced on in DeoVR

MikeTheTV

noname128 Aw, bummer. Sorry. I don't know what else to suggest except maybe to reboot between uninstall/install steps? Hopefully someone from SLR can be more helpful.

wuccer

I had a similiar problem, my hardware is HP Reverb G1 + i7 4790K + GTX3090. SLR app played all local videos just fine, but streaming videos higher than 2160 resulted in stuttering every few seconds, now I found out that this streaming-stuttering only happens if H264 codec was selected. If you start playing a video, open menu for this video, then in the title bar you can select codec H264 or H265. After selecting H265 streaming is totally smooth, even in highest resolutions like 3840, so make sure to select H265, meanwhile I have uninstalled all codecs like LAV-filter and in Settings, Developer, DirectShow ist deactivated, but I have Microsoft Media Foundation Codecs installed. I think using LAV-filter and DirectShow instead of Microsoft Media Foundation would work too, but the crucial point for me was to select H265 instead of H264!!!

Rakly3

wuccer That's correct. Hardware decoders (your graphics card) can decode h264 up to

3,840×2,160@120 (TV 16:9)
4,096×2,048@120 (VR 2:1)

Anything beyond that will be decoded on your CPU. You need server grade systems to do this smoothly. Though the latest desktop CPU's are getting there too.

I suggest always using h265 if you can, even for the lower resolutions.
Browsers can not play h265 so there you are stuck to '4K' h264 max.

Your GPU can decode h265 up to

8,192×4,320@120

There are still differences between the GPU cards ofc. It's not always as simple as just looking at the resolution. But any Nvidia 1650 and newer should be able to run all h265 videos on SLR. That's not up to us. The codec chip is literally, physically a different one than older Nvidia cards.

wuccer
i7 4790K + GTX3090 is quite a mismatch 🙂 The GPU performance is seriously crippled by the CPU here.

wuccer

Rakly3 Thank you very much for these specific details, now all makes sense