Question / Help Where is Constant Frame Rate? VFR completely unusable

[BlueBoxesL]

After far too many audio sync problems with Pro I found out all video being made with OBS is (for some reason) on variable framerate. I combed through the options and found no evidence of any CFR option ... googling only made things worse since OBS has apparently vastly changed its settings over the previous editions, and a CFR button used to exist but doesn't anymore? Nothing in any Advance tabs, output, video, anything...

How do you activate it? Does OBS even have it? I have Common FPS set to 60 but still coming out with unusable variable footage.

 

[Fenrir]

Can you provide a log? OBS will use CFR unless otherwise specified using custom encoder options. If your PC can't hold the framerate set for performance reasons, this might be what is causing the fluctuations in the files.

 

[BlueBoxesL]

Really? How strange, the source video runs fine but Pro has serious desync, all reports I've seen put this down to VFR. I suppose if it's still dropping frames I can switch down to 30 or spend the five necessary hours with Handbrake.

https://gist.github.com/bc093950b2463bdc78d07aaa2a7cee4c

 

[Fenrir]

While that log has no record attempt in it, I do see this:

16:48:11.837: - scene 'Scene':
16:48:11.837: - source: 'Game Capture' (game_capture)
16:48:11.837: - source: 'FireRed Overlay' (image_source)
16:48:11.837: - source: 'VBA' (game_capture)
16:48:11.837: - source: 'AdvanceWarsOverlay' (image_source)
16:48:11.837: - source: 'Display Capture' (monitor_capture)

You generally don't want to mix Display Capture with any other source type, as it is very inefficient compared to the other capture methods. ESPECIALLY on Windows 7.

 

[BlueBoxesL]

Even if they are disabled? I'll change it anyway

EDIT:
Wasn't sure how to upload an old log since the recording one was several hours ago, but I'll just throw it up on github
Pretty sure this was the one (since none of the logs match the time I recorded, no idea why. This would be the closest)

https://gist.github.com/anonymous/48cf13f326d60a05c6549beaf54dec96

 

[Fenrir]

Definitely overloading your GPU, which can cause framerate to drop in OBS

12:59:37.023: Output 'adv_file_output': Number of lagged frames due to rendering lag/stalls: 740 (3.4%)

Might recommend trying 30 fps or lowering the resolution to 720p if you want to keep 60fps. Your CPU is a bit old and an i5, and your GPU being a 960 means it's very easy to just max it out.

 

[BlueBoxesL]

Damn I saw the 88 frames loss and thought that would be easy enough to handle but 740? Didn't see that one
Will have to drop since anything but CFR is incompatible with Pro

 

[Boildown]

Try a different NVEnc preset, like High Performance, instead of Default.

 

[Fenrir]

Damn I saw the 88 frames loss and thought that would be easy enough to handle but 740? Didn't see that one
Will have to drop since anything but CFR is incompatible with Pro

In many cases you'll see the FPS dip below 60 before actual frames are lagged out if the GPU can't keep up.