Bug Report OBS 656b - NVENC VBR Framerate issue

[GhostMotleyX]

This has been an issue for quite sometime, I made a thread before but no-one responded. I think I have finally found out what's causing the problem.

The Issue: When I record a video using VBR with the NVENC the video looks really stuttery, jittery - basically looks like it's 1/2 the framerate I'm actually recording at (https://www.youtube.com/watch?v=I4yQXdg5ZC8) As you can see this video certainly isn't 60fps, heck it looks more like 20fps to me

However if I record with a CBR it looks perfectly fine (https://www.youtube.com/watch?v=qtIQlX3-lWY) As you can see this video looks smooth and actually runs at true 60fps.

What I think the problem is: I believe this is something NVIDIA have changed in the last few driver updates (355.60 - 355.98) When I install 353.62 VBR works perfect, as does CBR...

Extra Info: ~using the 355.60 - 355.98 drivers~ When I record a VBR video with the NVENC encoder it plays back perfectly smooth in Window 10's Film & TV but if I try and play the video with VLC Media Player or upload it to YouTube it looks stuttery, jittery etc.. etc...

 

[GhostMotleyX]

This is still an issue with the 358.50 driver... Please do not ignore this.

 

[Osiris]

I am on 355.82 and do not have this problem.

 

[GhostMotleyX]

I am on 355.82 and do not have this problem.

And you definitely used VBR? CBR works just fine. It's been an issue since the last few NVIDIA drivers, as I said in the main post VBR works fine with 353.62 but with 355.60 - 358.50 VBR just doesn't work. It's not any of my settings on OBS or Windows 10... If I install 353.62 it's fine, anything newer 355.60 - 358.50 and I have this issue.

 

[Timothy003]

This is likely due to poor pipelining and the use of B-frames in VBR mode. Do you really need it?

 

[GhostMotleyX]

This is likely due to poor pipelining and the use of B-frames in VBR mode. Do you really need it?

I used it previously, so yes I would definitely like this to be fixed.

 

[Timothy003]

You can use CBR without padding. It's equivalent to VBR with a min QP of 15.

 

[linderkin]

The problem is the new version, had to change something in the enc nvidia, burn recorded that well (perfect), but to go to Vegas Pro is rendering, it freezes. I returned to the 653b and everything works perfectly with the latest drivers from nvidia

Sorry my bad translation

 

[Osiris]

Nothing has changed regarding NVENC since 0.653b

 

[BullHorn7]

I have the exact same problem. IDENTICAL. It works fine with 353.62. I posted about this here before realizing there's other who suffer from the same problem: https://obsproject.com/forum/thread...-353-82-or-newer-doesnt-work-correctly.37956/

The problem seems to disappear when switching the encoding profile from High to Main but I'd love to know what causes it to break like that.

 

[GhostMotleyX]

I have the exact same problem. IDENTICAL. It works fine with 353.62. I posted about this here before realizing there's other who suffer from the same problem: https://obsproject.com/forum/thread...-353-82-or-newer-doesnt-work-correctly.37956/

The problem seems to disappear when switching the encoding profile from High to Main but I'd love to know what causes it to break like that.

I'm gonna try it with the main profile and see how it goes!

 

[GhostMotleyX]

Well I just tried it and I think they may have fixed VBR with High Profile, either that or NVIDIA have reverted the changes made in the latest driver