Question / Help Choppy output file, small file size.

#2
17:05:17.879: base resolution: 1920x1080
17:05:17.879: output resolution: 1920x1080
17:05:17.879: downscale filter: Lanczos
17:05:17.879: fps: 240/1


That's not a good idea.

17:08:31.638: Output 'simple_file_output': Number of lagged frames due to rendering lag/stalls: 2337 (55.2%)

Rendering lag. You're overloading your GPU.

https://obsproject.com/wiki/GPU-overload-issues

17:08:31.639: Video stopped, number of skipped frames due to encoding lag: 2647/2666 (99.3%)

You are completely overloading your encoder.

The 2080 is a great card but I honestly don't think you're going to get 1080p240 out of it in a single PC configuration. Either go for a smaller frame or a lower framerate.

Your files are small because no frames are getting into them.
 
#3
17:05:17.879: base resolution: 1920x1080
17:05:17.879: output resolution: 1920x1080
17:05:17.879: downscale filter: Lanczos
17:05:17.879: fps: 240/1


That's not a good idea.

17:08:31.638: Output 'simple_file_output': Number of lagged frames due to rendering lag/stalls: 2337 (55.2%)

Rendering lag. You're overloading your GPU.

https://obsproject.com/wiki/GPU-overload-issues

17:08:31.639: Video stopped, number of skipped frames due to encoding lag: 2647/2666 (99.3%)

You are completely overloading your encoder.

The 2080 is a great card but I honestly don't think you're going to get 1080p240 out of it in a single PC configuration. Either go for a smaller frame or a lower framerate.

Your files are small because no frames are getting into them.

Thanks for your reply, I've also tried 144 fps. Same exact problem.
 
#4
I have also used different monitoring programs to take a look at the gpu usage, didn't go above 60%.

Edit: This problem occurred all of the sudden, I was able to output smooth videos.
 
Last edited:
#5
GPU activity monitor does not keep track of work being done by the encoder, just the work OBS is doing to render frames. It's also just not a useful way to measure, because it's possible for bottlenecks to exist that degrade performance even when tools indicate less than 100% utilization. When OBS says it can't render a frame, it means it-- it can't render a frame because it can't get access to the GPU. If you're trying to run Rocket League at 1080p with no frame rate cap, and then record it in 240 fps, it is entirely believable that OBS is unable to render and encode frames fast enough in a single PC setup, even on a 2080.

You're saying you were previously recording 1080p240 with a CQP of 16 and went from zero encoding lag to 99% encoding lag without changing anything?

Have a link to a recorded file I could download? Perhaps a short clip?
 
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