First 5K videos not playing, installed LAV, now lower res laggs

[Dr. Bunsen]

Title^

So I started out with this, trying 5K videos, that didn't work. I found I had to install LAV, now 5K somewhat works, but lower res videos stutter/lag now. I checked with the dev options, the GPU is being heavily struck when watching lower res videos, but not 5K videos. Is this a known issue?

[DEOVR tester]

We recommend you install Microsoft HEVC File Extensions to play H.265 / 5k / HEVC files with this app.

[Dr. Bunsen]

Originally posted by ted:

We recommend you install Microsoft HEVC File Extensions to play H.265 / 5k / HEVC files with this app.

No dice. Weird.

[quidnunc]

That's for with DirectShow off (assuming it's an hevc file; there's also vp9 extensions although I only needed that for YouTube). I think using the media foundation tends to be better performing (at least on my hardware) than directshow in DeoVR. If the media foundation is set up right to play you can always turn Directshow on and off in settings while viewing a video to see the difference

for DirectShow on (LAV filters) in LAV Video Configuration set hardware acceleration to DXVA native. I found Nvidia CUVID perform worse, and DXVA copy-back have some issues with memory. Assuming of course that LAV is preferred

Worse case you can try Codec Tweak Tool but that's at your own risk if you don't backup before making changes

edit:

https://mspoweruser.com/heres-how-you-can-get-the-hevc-codec-from-microsoft-store-for-free/

[Dr. Bunsen]

Originally posted by quidnunc:

That's for with DirectShow off (assuming it's an hevc file; there's also vp9 extensions although I only needed that for YouTube). I think using the media foundation tends to be better performing (at least on my hardware) than directshow in DeoVR. If the media foundation is set up right to play you can always turn Directshow on and off in settings while viewing a video to see the difference

for DirectShow on (LAV filters) in LAV Video Configuration set hardware acceleration to DXVA native. I found Nvidia CUVID perform worse, and DXVA copy-back have some issues with memory. Assuming of course that LAV is preferred

Worse case you can try Codec Tweak Tool but that's at your own risk if you don't backup before making changes

edit:

https://mspoweruser.com/heres-how-you-can-get-the-hevc-codec-from-microsoft-store-for-free/

I didn't even try nvidia since I do not have a nvidia card.
But I think it is weird that I can play VR games et cetera that perform great, but playing some video file gives me issues.

[DEOVR tester]

"I do not have an nvidia card" to play 5k and better content you need to have a video card that supports H.265 / HEVC decoding. If you don't the decoding is moved off the GPU to the CPU, and HEVC decoding is too taxing even on newer CPUs.

And once again, LAV filters are not required to play the majority of 5k, 6k, 7k content. DeoVR will play content smoothly on your system using the HEVC file extensions from the Microsoft Store with the "Direct Show" toggled off you your player (and a graphics card that supports HEVC decoding). Occasionally a studio will encode 5k content that requires Direct Show and for those few files LAV filters + Direct Show toggled on will play the content just fine.

[Dr. Bunsen]

Originally posted by DEOVR tester:

"I do not have an nvidia card" to play 5k and better content you need to have a video card that supports H.265 / HEVC decoding. If you don't the decoding is moved off the GPU to the CPU, and HEVC decoding is too taxing even on newer CPUs.

And once again, LAV filters are not required to play the majority of 5k, 6k, 7k content. DeoVR will play content smoothly on your system using the HEVC file extensions from the Microsoft Store with the "Direct Show" toggled off you your player (and a graphics card that supports HEVC decoding). Occasionally a studio will encode 5k content that requires Direct Show and for those few files LAV filters + Direct Show toggled on will play the content just fine.

Tried this all, no dice. Weird. Also, playing some video content can hardly be too taxing for my GPU. I tried all settings. Also, if you read my OP, I am saying lower than 5K started lagging after lav, and hevc didn't seem to do anything.

[Nemesis]

I have similar issue to OP. I'm a newbie to VR but after doing some research I installed the K-lite pack and lav filters and got 5k and 7k videos running virtually like butter. Then having returned to 4k content it's incredibly stuttery. I tried resetting the filter packs I had (toggled directshow off and on in all steps to test) and am now stuck with incredibly glitchy sub-5k videos.

Furthermore, I found with 5k up to 7k videos if i set the frame rate to 90fps on valve index this was the 'sweet spot', but it doesn't seem to matter what I set it to for 4k videos now. FPSVR shows that my system is not struggling or dropping frames at all. It just jitters the whole way through...

[NookieMonster]

Originally posted by Mykey:

I have similar issue to OP. I'm a newbie to VR but after doing some research I installed the K-lite pack and lav filters and got 5k and 7k videos running virtually like butter. Then having returned to 4k content it's incredibly stuttery. I tried resetting the filter packs I had (toggled directshow off and on in all steps to test) and am now stuck with incredibly glitchy sub-5k videos.

Furthermore, I found with 5k up to 7k videos if i set the frame rate to 90fps on valve index this was the 'sweet spot', but it doesn't seem to matter what I set it to for 4k videos now. FPSVR shows that my system is not struggling or dropping frames at all. It just jitters the whole way through...

Can you check if the sub-5K are running on your GPU or CPU?
Simply press ctrl+shift+esc and go to the performance tab.

[evin279]

i can't deactivate directshow for 5k or 6k video , you know why ?

[NookieMonster]

Originally posted by evin279:

i can't deactivate directshow for 5k or 6k video , you know why ?

You don't have LAV?
https://codecguide.com/download_k-lite_codec_pack_standard.htm

[evin279]

Originally posted by NookieMonster:

Originally posted by evin279:

i can't deactivate directshow for 5k or 6k video , you know why ?

You don't have LAV?
https://codecguide.com/download_k-lite_codec_pack_standard.htm

yes,i have.