Question / Help Lag in window capture recording

[SanderStaal]

Hi,

First of all, sorry I'm a noob at this;-). We use OBS for recording a windows capture. We recording our Powerpoint presentation and then we do a voice over.

We now have a new laptop, Intel Core i7-6700HQ CPU @ 2.60 GHz and I cannot find the right settings in OBS for recording.

I have tried different things and sometimes I lose a lot of quality and the other time I have lag in the videos. This is the latest log file were I had a lot of lag: https://obsproject.com/logs/Dp5H12k5fUn9n6r8

Can maybe someone help me and tell me what are the best recording settings with my laptop? The only thing we want to do is, play a powerpoint presentation and record this with a window capture, without losing quality of the video.

Thank you very much for your help!

 

[Narcogen]

15:11:53.111: Output 'adv_file_output': Number of lagged frames due to rendering lag/stalls: 1146 (40.1%)

You're overloading your GPU.

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

15:11:53.111: ==== Recording Stop ================================================
15:11:53.112: Video stopped, number of skipped frames due to encoding lag: 1145/2855 (40.1%)

You're also overloading your encoder.

15:10:25.731: [jim-nvenc: 'recording_h264'] settings:
15:10:25.731: rate_control: CBR
15:10:25.731: bitrate: 30000
15:10:25.731: cqp: 20
15:10:25.731: keyint: 250
15:10:25.731: preset: hq
15:10:25.731: profile: high
15:10:25.731: width: 3840
15:10:25.731: height: 2160

Don't use CBR rate control for recording-- use either CQP with a quality rating of 15 (high) to 23 (good) or use simple output mode, indistinguishable quality, large file size.

The resolution you have chosen appears to be beyond what your GPU can handle when running whatever applications you're running AND running OBS.

If you're doing this for PowerPoints, drop to 30fps.

15:10:14.214: base resolution: 3840x2160
15:10:14.214: output resolution: 3840x2160
15:10:14.214: downscale filter: Lanczos
15:10:14.214: fps: 60/1

 

[SanderStaal]

15:11:53.111: Output 'adv_file_output': Number of lagged frames due to rendering lag/stalls: 1146 (40.1%)

You're overloading your GPU.

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

15:11:53.111: ==== Recording Stop ================================================
15:11:53.112: Video stopped, number of skipped frames due to encoding lag: 1145/2855 (40.1%)

You're also overloading your encoder.

15:10:25.731: [jim-nvenc: 'recording_h264'] settings:
15:10:25.731: rate_control: CBR
15:10:25.731: bitrate: 30000
15:10:25.731: cqp: 20
15:10:25.731: keyint: 250
15:10:25.731: preset: hq
15:10:25.731: profile: high
15:10:25.731: width: 3840
15:10:25.731: height: 2160

Don't use CBR rate control for recording-- use either CQP with a quality rating of 15 (high) to 23 (good) or use simple output mode, indistinguishable quality, large file size.

The resolution you have chosen appears to be beyond what your GPU can handle when running whatever applications you're running AND running OBS.

If you're doing this for PowerPoints, drop to 30fps.

15:10:14.214: base resolution: 3840x2160
15:10:14.214: output resolution: 3840x2160
15:10:14.214: downscale filter: Lanczos
15:10:14.214: fps: 60/1

Thank you very much! I will try that!

 

[SanderStaal]

15:11:53.111: Output 'adv_file_output': Number of lagged frames due to rendering lag/stalls: 1146 (40.1%)

You're overloading your GPU.

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

15:11:53.111: ==== Recording Stop ================================================
15:11:53.112: Video stopped, number of skipped frames due to encoding lag: 1145/2855 (40.1%)

You're also overloading your encoder.

15:10:25.731: [jim-nvenc: 'recording_h264'] settings:
15:10:25.731: rate_control: CBR
15:10:25.731: bitrate: 30000
15:10:25.731: cqp: 20
15:10:25.731: keyint: 250
15:10:25.731: preset: hq
15:10:25.731: profile: high
15:10:25.731: width: 3840
15:10:25.731: height: 2160

Don't use CBR rate control for recording-- use either CQP with a quality rating of 15 (high) to 23 (good) or use simple output mode, indistinguishable quality, large file size.

The resolution you have chosen appears to be beyond what your GPU can handle when running whatever applications you're running AND running OBS.

If you're doing this for PowerPoints, drop to 30fps.

15:10:14.214: base resolution: 3840x2160
15:10:14.214: output resolution: 3840x2160
15:10:14.214: downscale filter: Lanczos
15:10:14.214: fps: 60/1

I have changed the settings now and test some sessions. It looks way better now for me. Size of the file is way bigger but that is no problem at all for me! I have made a log file: https://obsproject.com/logs/OIjwZcICJ6T30XYf

Does it looks good for you now? Or any suggestions.

Thank you very much for your help! I was struggling for a long time with the settings.

 

[Narcogen]

10:19:00.829: Output 'adv_file_output': Number of lagged frames due to rendering lag/stalls: 85 (2.3%)
10:19:00.830: ==== Recording Stop ================================================
10:19:00.830: Video stopped, number of skipped frames due to encoding lag: 88/3644 (2.4%)

Much less lag. If this amount is fine for you, enjoy! If you want to reduce these further, you might look at altering in-game settings to use fewer GPU resources.