Simultaneously Recording one source out to Two Files (16:9 recording and 9:16 recording)

[Catahoula]

Hello,

Newbie here.

I am capturing scenes off a live lip-synced animation program and wanting to create two recordings, one in a landscape 16:9 format and one in a vertical 9:16 format. Each format frames the scene differently and I have each set-up. I can output to 16:9 or I can output to 9:16, but not both simultaneously.

I have watched tons of tutorials and the closest I found was to open OBS twice and use the appropriate settings of each. On the tutorial it worked, but on my attempts I only get one or the other. When one is visible the other is not. I if turn the eye off the visible one, the other instantly shows.

I have one OBS iteration with a profile specific to the 16:9 specs and the other ONBS iteration on a different profile for the vertical format.

Any idea what I am doing wrong or advice on how to do this??

Thanks in advance!!!

 

[AaronD]

I am capturing scenes off a live lip-synced animation program and wanting to create two recordings...
...
open OBS twice...
...
When one is visible the other is not.

Is the capture exclusive to one app at a time? So only one instance of OBS can see it, even if both are configured correctly?

If so, then that's a limitation of the operating system that you can't get rid of. Historically, that was done for performance reasons, as the hardware just wasn't fast enough to copy a live video stream and process both copies separately and simultaneously. So the first thing to request it got it, and everything else would have to wait until the first one released it. Then the next in line that still wanted it got it, etc.

Now, the hardware is easily fast enough to do that, and so some OS's have removed that restriction. But not all have.

If yours is still exclusive, then there are plugins to have one instance of OBS send it to another instance, so that the second instance doesn't try to request the same original source. Or if you're not already using the Virtual Camera, then you don't even need a plugin.

 

[Suslik V]

If you have 1 source of max size in OBS you can make recording and cut it in post process.

If you need some live views (cropped for streaming) and wish to record source in its original size, then Source Record plugin may help:

Source Record

Download Plugin for OBS Studio to add a filter that allows you to record a source. Add "Source Record" filter to your source. Installation Copy and merge the folders that are in the download zip to the OBS folder for example: C:\Program...

obsproject.com

 

[Catahoula]

Thanks for the above advice. I'm running a Dell Alienware with a i7 13700KF, NVIDIA GeForce RTX 4080, 32G RAM and 16G VRAM on Windows 11 - need it for the 3D animation we're doing. I anticipate that the PC is powerful enough but perhaps the OS is still the issue as mentioned. I will also try the plugin.

Worse case I can obtain the desired results in post- which may also be wiser once we do any edits to the primary feed. We are putting out numerous 30 second to 2 minute clips, that there will be minimal post work, so primary goal was to just have the two recordings.

Thanks again!!