Question / Help Recording lagged and choppy (use to record flawlessly)

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Bubba Fabes

New Member
So I've been using OBS for Months and was recording great quality at 60fps. then, all of a sudden my "start Recording" button wasn't working. so I made sure my recording pathway was ok, tried a few others just in case. Nothing. So i've tried changing some of the settings, i've tried every kind of setting and my video is coming out SUPER lagged FPS drop. I don't even know what settings I was using anymore. Please help, I need to get OBS back so I can Record again.

Specs
GTX 980 ti
i7-4790k @4.00GHz
8GB ram


https://gist.github.com/c6a8f42b305a4dfdce458f84872a4216
 
OG See OH Zee

OG See OH Zee

Member
Code: 
19:17:45.095: [x264 encoder: 'recording_h264'] preset: fast
19:17:45.096: [x264 encoder: 'recording_h264'] settings:
19:17:45.096:     rate_control: CBR
19:17:45.096:     bitrate:      15000
19:17:45.096:     buffer size:  15000
19:17:45.096:     crf:          0
19:17:45.096:     fps_num:      60
19:17:45.096:     fps_den:      1
19:17:45.096:     width:        1920
19:17:45.096:     height:       1080
19:17:45.096:     keyint:       250
19:17:45.096:     vfr:          off

You set your CPU preset to fast while recording in 1080p60, which resulted in this below...

Code: 
19:20:16.249: Output 'adv_file_output': Number of skipped frames due to encoding lag: 8848 (136.3%)

Even an unlocked i7 cannot handle such settings while running games with it.

Also, you have two sources running at once which is causing some frametime spikes on the GPU, Game Capture & Display Capture are running at the same time. Remove display capture and change your x264 preset to ultrafast, and change the rate control to CRF instead of CBR.
 
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BornDownUnder

Member
x264 encoder uses CPU
NVENC (h264) encoder uses your GPU (Still uses some GPU resources, about 5-15% dependent on game including OBS resource usage)

Using the NVENC encoder to do recordings is preferred as when recording you are not bitrate limited, as opposed for the x264 encoder which is more for streaming due to being far better quality at lower bitrates. You can find recommended settings in the link below:
https://obsproject.com/forum/resour...lity-recording-and-multiple-audio-tracks.221/
 
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Bubba Fabes

New Member
For some reason when i set it to NVENC, the "start record" button doesn't work. It's not Grayed out or anything but pressing it doesn't change it to "recording" Am i missing a Driver?
 
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BornDownUnder

Member
11:37:37.707: video settings reset:
11:37:37.707: base resolution: 1920x1080
11:37:37.707: output resolution: 1920x1080
11:37:37.707: downscale filter: Bilinear
11:37:37.707: fps: 60/1
11:37:37.707: format: RGBA

You need to change your color format to NV12 in Advanced Options, color space should be 601, color range should be partial. The color format setting might be causing the issue below:
11:43:13.290: [NVENC encoder: 'recording_h264'] Failed to open NVENC codec: Generic error in an external library
The above line is stating there is an error for the NVENC encoder initiating recording (Generally a supported feature/graphics card issue) Below are some further troubleshooting steps if changing the color format does not fix the issue:

Make sure you have file output selected and have a file output path set, then try selecting the NVENC encoder again.

Are you using the latest nVidia drivers? Looking at other threads with recording issues, downgrading to driver version 376.33 may be an option to get it working (Clean Install)

If that doesn't work, can you upload an updated (Current) logfile after closing the program and restarting it.
 
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