Question / Help Recording halves of my screen separately

krave

New Member
OBS newbie here. I am looking to record some internal training videos while working from home. I have a side monitor on which OBS will be running, and my main 3440x1440 monitor that I wish to work on and record for the video. On the main screen I have to remote connect to our terminal server to run the applications I wish to train on. My intent was to run the two applications side by side on the ultrawide, one taking up the left 1720x1440, and one taking up the right 1720x1440, and the canvas also at 1720x1440. I tried to set this up along with a hotkey that toggles hide/show for both video sources so that with one hotkey I would hide one source and show the other.

I couldn't get it to work.
1) I started with 3440x1440 as the canvas
2) Set up Left and Right display sources, and cropped each to the left and right halves of the monitor by alt-click-dragging the vertical bars
3) Set up the hotkey to hide/show both sources

At this point I can switch between the two sources back and forth as I wanted, but the problem is with the 3440x1440 canvas I am switching between recording the full 3440 width with the sources effectively blacking out half the screen as I switch back and forth.

4) I then switched the canvas to 1720x1440. Now the Left source works as intended, but the Right source is just blank. It seems like changing the canvas limits OBS to only recording what's on the 1720 leftmost pixels of the display rather than recording whichever 1720x1440 source is being shown.

I can't switch to recording by window instead of by display, because everything is being run with an RDP session, so OBS sees that RDP session as a single window and is unaware of the applications running on the remote server. What am I doing wrong? Can OBS be set up to switch between two same-resolution sources and output at that same resolution?

Not the end of the world if I can't get this working, I suppose I'll just set the RDP session up at 1080p and alt-tab back and forth between the applications I want to record, though it seems like an inelegant solution.
 

koala

Active Member
Using a canvas of 1720x1440 is not a good idea. Keep in mind most (if not all) of your viewers have a monitor with a resolution of 1920x1080 or 1366x768 with an aspect ratio of 16x9. 1720x1440 is aspect ratio 10.75x9, an almost quadratic format. Displaying this on a aspect ratio 16x9 monitor will result in huge black bars on the right and on the left, wasting much screen space.

Using a rdp window of exactly 1920x1080 seems the best idea as solution, because with this you can set your canvas to 1920x1080 as well and it looks to your audience as if you have a regular 1920x1080 monitor just like them.
 
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