Capture part of the screen with video visible and ready to play ?

[BOBC]

Hi,
I can see that I can resize the red box using alt and one of the red squares, I then run the video and on that internet page I cant see the red box, I only see it if I minimise the video internet page, so how do I get the red capture box displaying over the actual video on the videos internet page so as to size it to fit, then I will need a 'hotkey' to start recording, so I presume with OBS active but not showing, a keyboard hotkey will still set it running.
I wish there was a right click mouse option saying capture with OBS drag capture area out !
Even on the OBS interface with its mirroring effect (which is very unsettling by the way) its not obvious where the 'region capture ' is.

BOBC

 

[Darkina157]

eu quero essa opção

 

[BOBC]

Does anyone know how to perform this MOST ESSENTIAL OF THINGS, A PARTIAL SCREEN RECORD ?
surely OBS havent boobed and forgotten such a basic need ?
BOBC

 

[Harold]

To crop sources in OBS Studio, first reset the source to its default size by clicking on it and pressing ctrl+r. Then hold the alt key and drag the red box around the source you wish to crop. The sides will turn green to indicate they are cropped. Note that the preview must be unlocked in order to do this.

 

[Captain86]

They haven't done it this way. Unfortunately there is no way to capture a partial screen. You can only crop it in the preview and/or the output. However, the entire screen is already being captured and wasting resources that would be better to encode only a selected stream region.

You really notice this difference when gaming on triple screens where you capture something like 7860x1440 then crop it down to 2560x1440 and then scale it down to 1920x1080. This just kills the game and the broadcast quality all around.
I'll experiment some more with these settings but I have had little success producing a quality recording or stream because of this subject.

I'm sure it's great on single screens and likely great when capturing the image of a capture card that can then passthrough the single screen back to your triple screen setup. This way you only capture the single screen and not the entire emulated triple screen setup created by nvidia surround etc etc.

I'm currently going to purchase the avermedia ultra for that reason and because the passthrough is well over 144hz for this as well.
This will likely solve my problem with capturing such a huge screen then cropping it down and wasting resources.

Not all capture devices allow high frame rate passthrough as well as a full sprectrum of resolutions like avermedia does.

Don't get me wrong cropping is good with the proper setup and it's all you need to do but if you have triple screens and are use to region selected capture then obs won't do that unfortunately but I'm ok with buying capture cards for this.

Happy streaming to all.