Webcam aspect ratio problems

Headwesty

New Member
I am using OBS to provide video delay to the Webcam on a Microsoft Surface Go2 (i3 model) which may be a bit optimistic but seems to work! I am then using the OBS Virtual Webcam in Zoom with audio coming from a digital mixer (Line6 M20d). The audio has a lot of latency so I'm using OBS to delay the video to match. (I'm actually streaming a big choir rehearsal with several mics and video of the conductor over a Zoom meeting).

I'm trying to use 1280x720 throughout to minimise load on the feeble CPU but no matter what I set Base or Output resolution to the 'black screen' in the editor resolutely stays the same shape (and not 16:9 - if anything it mirrors the 1920x1280/3:2 aspect ratio of the device). As a result the webcam does not fill the output screen - if fitted for width I have black bar below. More curiously in Zoom the aspect ratio is then squashed vertically - as if it has taken the 3:2 output from OBS and squashed it to 16:9.

I can fix this by using a transform to stretch the webcam to full height of the output screen but I don't understand why I have to and really don't want the poor Surface Go to have to do all that work. I'm stretching in OBS so Zoom can unstretch it back again!

How do I get the 'black screen' in the editor window to match the selected Output Resolution? Sorry is this is a newbie question...
 

Headwesty

New Member
Some screenshots relating to the issue
OBS Video Settings.png
OBS Main Screen.png
Zoom Video Settings.png
 

Headwesty

New Member
D'oh! I answered my own question. Attempts to change the output resolution are ignored if Virtual Webcam is running. I stopped Virtual Webcam and it all worked as expected. Perhaps a popup would help here?
 
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