Question / Help Perfect Settings For Presentations

[Wildhoney]

Hi all, I've been trying to create presentations with various backgrounds but I just can't get the settings to remove a slight lag. The voice records fine but it seems like there is a tiny delay in the video portion.

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This guy here, Jerry Banfield, does a great job and I think he uses OBS for his games and presentations with no lag time at all. I've tried the settings I found recommended here but they don't seem to work.

Does anyone know what causes the lag and how to fix it?

 

[Beardedbob]

OBS has the open to adjust the lag on a webcam or mic audio, have you tired to use these to bring them into sync?

 

[Wildhoney]

The lag is in the video recording portion, not the audio. I use the Logitech c920 and it doesn't have any adjustments. It seems more like the lag is coming from the settings in OBS.

Even before I hit the "record video" button I can see a lag when I wave my hands in front of the camera or speak. It seems like there is a tad bit of slowness to the visual. The audio is perfect though.

 

[Suslik V]

Lower cam resolution via Resolution/FPS Type: custom; try to set Buffering to disable for face cam. Edit>Advanced Audio Properties>Sync Offset (ms) - audio sync for output, negative values accepted.

Just in case, OBS Studio Help Guide: https://obsproject.com/forum/resour...ware-studio-multiplatform-help-guide-pdf.365/

 

[Wildhoney]

Lower cam resolution via Resolution/FPS Type: custom; try to set Buffering to disable for face cam. Edit>Advanced Audio Properties>Sync Offset (ms) - audio sync for output, negative values accepted.

Just in case, OBS Studio Help Guide: https://obsproject.com/forum/resour...ware-studio-multiplatform-help-guide-pdf.365/

Trying this right now, will keep you posted. Thank you, Suslik!

 

[Wildhoney]

When I try to run OBS, I get a pop-up window saying that the program "MSVRCR120.dll" is missing and to reinstall the program. When I click "ok" the program starts fine. I still tried reinstalling OBS 3 times (uninstalling previous versions) but it keeps telling me the same thing. Does anyone know what this is related to?

 

[Wildhoney]

Lower cam resolution via Resolution/FPS Type: custom; try to set Buffering to disable for face cam. Edit>Advanced Audio Properties>Sync Offset (ms) - audio sync for output, negative values accepted.

Unfortunately I don't seem to have these functions available. When I go to Resolution/FPS Type/Custom, all I get are various sizes the video can be rendered it (1080x720, etc.). There is no choice to "buffer" or disable anything for the c920 face cam.

I also don't seem to have Edit/Advanced Audio Properties/Sync Offset available anywhere. I'm not worried about the audio since I record the audio separately with Audacity and then post-edit the two at the end. What's not working is the lag time of the video.

I think it has something to do with in the area of Output/Recording tab settings and/or the Video tab settings. The help manual is not helpful since it's just a glossary of what all the buttons are but doesn't actually give suggestions of most ideal settings for this type of application.

 

[Suslik V]

At least you can find Advanced Audio Properties by this manual ^_^ Main menu Edit>Advanced Audio Properties.

As for buffering - it always at the end of the list of the 'Video Capture Device' source properties, when you scroll it up down.

As for "MSVRCR120.dll" you need to install vc++ dlls: Missing MSVCR120.dll error on Windows 10 (both x86 and x64, also, look for newer libs (2015) for future releases of the Studio, https://support.microsoft.com/en-us/kb/2977003)

 

[H4ndy]

Is your room properly lighted? Webcams are no magical devices and need to massively increase the exposure time when it's too dark and this can quickly fall below 10-15 fps.