Poor frame rate in Deo, High frame rate in Media Player Classic

vrmaster

Thanks for the response @philpw99 - i did what you suggested and re-installed the k-lite codec pack and must have done it right this time since i finally get the little LAV icons in the navigation pane when i play videos on my desktop. I fooled a bit with the decoders, and found that i personally get WAY better performance from the DVXA2 native compared to the Nvidia CUVID. It feels a bit like a half-fixed the problem. I can now run virtually all 6k videos at full 60fps with DeoVR. However I still cannot get good frame rates, even watchable frame rates, in DeoVR with 7k or 8k videos despite the fact that i can get full 60 fps on those same videos in media player classic or VLC or whatever. I noticed in my task manager that when i'm decoding these 7k and 8k videos in media player classic, the 'video decode' on the GPU tab of task manager gets pretty much pegged at 100%, but when i'm running the same video on DeoVR, which gets 25 fps give-or-take, the video decode is pegged at only 80% and the LAV icons on the notification do not appear when decoding with DeoVR (not sure if they should).

Anyways, i appreciate anyone else's insight. Does anyone else find much higher frame rates in these high-end videos played on desktop vs played in DeoVR or VR in general?

philpw99

vrmaster
When using DeoVR to play those videos, you should see 3 LAV icons: LAV splitter, LAV Audio Decoder and LAV Video decoder.

If you don't have those LAV icons when decoding with DeoVR, then LAV is still not the decoder. DeoVR is using some other decoder for the 8k video. It explains why the decoder usage is 80%, not 100%. For 8k videos it should go above 90%.

Also uncheck the "unity player" in settings. It will only cause problems.

boboweb

vrmaster

vrmaster - what VR set do you have ? If you have Quest 2 and play vids trough VD there is a way to make DeoVR play 8K vids with a lot more fps ...

Otherwise as the latest versions of DeovR over 9.0 are really broken you cant make them play natively 8K vids smooth anymore ... Still waiting devs to fix that low fps issue but nobody knows if and when this will happens ...
Anyway you can try two things:

1.) Roll back DeoVR to v8.55 - then you can play smooth all 8K vids .
2.)If you are using the latest v9.4 you can try to check "Alternative decoding" in DeoVR options menu .

Yar

Hi guys!
DeoVR player works great at 60 and 90 (FPS) frames per second. Without any problem.
Maybe you can share some technical information with us so that we can reproduce and investigate the issue?

boboweb

Yar

This is just not serious ! No - the new versions of the player dont work great - actually they work really bad and practically are useless . How many more people should report here and in Steam discussion board for low fps issues
to make you believe this and do something to fix this ?!? If you still pretend there is no problem that wont resolve the problem and the problem will still exist !
What specific technical information want me to share - tell me exactly and i will share ?

Yar

boboweb
The player works great without any issue and allows you to get 60 and 90 FPS.

Record a video of what you are doing and what your problem looks like. Submit links to the videos you are watching.
Any information to help reproduce your situation.

boboweb

Yar

I am still here if you need some more info .

Yar

boboweb I understand your message. Removed unnecessary.
Sorry, we are unable to reproduce your problem. The video that you cited as an example opened perfectly and showed us 90 fps.

vrmaster

Thanks for all the responses guys. I'm going to try rolling back to 8.55 and see if that helps. My setup is weird, i'm running a Nvidia 1660-Ti eGPU - that is, EXTERNAL video card via a thunderbolt 4 port off a 2021 LG Gram 17. CPU is an i7-1165G7, 16gb RAM, and playing stored videos off the SSD. I'm using an HP Reverb G1 as my rig, so running through windows mixed reality and steam VR. Which is why i've been wondering if windows mixed reality and steam just bog down the system too much to get the full frame rate - since i can play 8k 60fps videos at full FPS when using an external monitor, but not through DEO. Heresphere is even worse, way worse actually, so that's why i wondered if it was a setup issue.

I don't do any VR gaming, but I'm never sure if i SHOULD be able to play 8k video off at 1660-Ti at full frame rate within VR, or is my system just not good enough? CPU never seems to go over 20% within Deo, but my Nvidia is working hard (though as i mentioned, decode seems to get stuck at 80% and never goes up to 100% when in deoVR - this is different on an external monitor where it does go to 100%).

vrmaster

Okay, i just found an old link to download an older version of DeoVR, i'm not sure which, but i think it's 8.55, uninstalled the old one and ran the new one, and BOOM, everything worked great - i was able to load up 7k & 8k videos and play them at 60fps, and skip forwards and backwards instantaneously with no lag or jitter. Even loading thumbnails seemed to freak out my computer way less. Sorry devs! Not sure what's up with that, just relating my experience. Anyways, thanks @boboweb for the suggestion.

Incidentally i still don't get the LAV icons appearing, but i suppose it doesn't matter since video is now silky smooth.

boboweb

vrmaster

I am glad that helped you vrmaster !

Yar

boboweb You have no reason for this behavior. I strongly advise you not to lose face on the forum and maintain a culture of communication.

boboweb

Yar

The only reason is you - i tried to help you and waste a lot of my time to write a post to describe the whole problem ,
and the only thing that you did in return is to delete all my post and tell that there is no any problem and all works fine like an real russian communist ... So dont pretend you are surprised of my behavior because you become even more pathetic ..

Now what is your comment about vrmaster problem solution !?!? hahaha

Yar

boboweb
I copied your message and sent it to devs. But he cannot stay on the forum, because it is intended for adult content. I also wrote about this. I'm sorry you didn't get it. However, this does not give you the right to go beyond decent communication on the forum...
Regarding different playback, versions 8.X and 9.X are made in different development environments, in version 9 the new XR system management is used, which allows you to work without flickering when tracking is disabled. But be that as it may, the player itself comes without built-in codecs, but uses those that are installed on your system. It is for this reason that in order to solve a problem, we need to reproduce it.
And also wrote that the video that you sent via the link plays normally with us.

boboweb

Yar

OK then back my post here without the adult content link ?! Why need to delete it all ???
You say the video works fine at you - cool but this doesnt sound serious ?! You dont provide even the technical specifications of the testing system ? What VR set , GPU , VR engine , settings and so on ...
Yes its possible the video playback on GTX 3090 or 3080 to be smooth even they load just 20% but on less powerful cards same video will stutter ... So if you want to be good support - show some more respect to your customers and try to respond with more specific hardware and software information .

Alternombly

philpw99 I'm really trying to follow these instructions but I don't really know what to do. Where in the codec tweaker do I ensure LAVFilter handles my video?

Also, where should I see the icon? In the playback itself?

It just seems like it doesn't matter what settings I change, nothing happens. I'm having poor performance on videos that use the alternative method, takes a long time to seek to new spots on the video - this is with the microsoft HEVC drivers installed.

Without those drivers installed, it literally doesn't work at all.

I'm also having a bizarre issue with aspect ratio & stereo playback not working on this same alternative method, which I mentioned here but have had zero replies on: https://forum.deovr.com/d/510-strange-mono-aspect-ratio-issues-with-particular-videos

philpw99

Alternombly The LAV icons should appear in the lower right corner of your computer screen, where it's called "notification area", and where the little speaker and time should be.
When you open DeoVR and start playing a video, you should see those 3 LAV icons appear in that "notification area", otherwise DeoVR is not using LAV to decode, it uses something else. If this is the case, you need to use "Codec Tweaking Tool" to fix it.

From my experiments, it does seem DeoVR have a problem with maximum hardware decoding for some videos.
Those 7k and 8k video needs over 60% of decoder power to decode. Yet DeoVR will not give the Nvidia decoder all the power. Therefore the video appears to be choppy and slow. Yet the VR frame rate is still good (90Hz).

Yar

To verify that the codecs are working correctly, you need to perform a clean install of the codecs. Those remove all installed codecs, cleanup with a program like CCleaner, restart the system.
Install HVEC from Microsoft Store. And then try to open your video through Windows media. If it works well, it will do the same with DeoVR.

Alternombly

Thanks for the reply, so just to clarify, I need to remove LAVFilters / k-lite and use CCleaner, then install HVEC?

Then do I install LAVFilters or k-lite on top of that again?

Also has anyone taken a look at the other issue I mentioned?

EDIT: That has brought the videos back, but the performance is still poor when seeking, it takes several seconds to play each time I seek, and the framerate is noticeably choppier.

Also I'm glad you've shown me that I can reproduce the issue in Windows Media Player, because I'm getting the same squashed aspect ratio in Windows Media as I am in DeoVR, so this gives me an easier way to test the issue.

In PotPlayer, for instance, it just works, I get none of the performance or aspect ratio issues, and it appears to be independent of what codecs I've installed.

boboweb

Alternombly

Just dont waste your time with LAVFilters reinstall . Read my first post in this topic and try it .

Alternombly

boboweb Neither of those helped me I'm afraid.

EDIT: But I went back to the most recent version of Deo and some combination of things has improved the framerate at least. I've still got lag when seeking though.