How to Adjust Screen Size in OBS Studio - Quick & Easy

This tutorial shows you how to adjust screen size in OBS studio. When it comes to the OBS preview you can quickly adjust the size by dragging the edge of a panel. The preview window will automatically resize to fill the space. This is particularly useful to see your canvas better and adjust what is being seen on stream or in recordings.

OBS Studio screen size, or source size can easily be changed by dragging on a corner or side point. By default, the screen size will adjust as you move in or out. The screen will change while maintaining its aspect ratio. You can also adjust the screen or source size freely by holding Shift on your keyboard. This will allow you to adjust each side as needed.

Another way to adjust screen size in OBS is to crop a source. This can be done by dragging in a side while holding Alt. While holding Alt the selected side will be cropped out removing it from the image. Using this method, you can easily resize a webcam or source to fit into the required space.

Additionally, you can use the edit transform menu to make precise adjustments to your screen in OBS. With edit transform you can change the position, size, crop, and rotation at a pixel-by-pixel level. This option is tedious, however, allows you to setup your OBS screen pixel perfect. If you have a more intricate overlay, then the edit transform option may be the best option for you.

Chapters:
00:00 Preview Size
00:20 Resize Source
00:41 Crop Source
00:47 Reset Transform
00:53 Resize, Crop & Rotate Perfectly

► Background Music

Disclaimer: The advice provided in our tutorials and guides are based on our personal knowledge and experience. No advice given should be considered that of a professional, and comes with no guarantee. We strongly recommended that you do your own research to ensure what you're doing is safe, and will accomplish the results that you're looking for.

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[christianromano]

So simple yet, I spent an hour looking for it, thank you!

[rovingpixels]

For months and months, I've been trying to fix this! Thank you!

[ZacGames]

the shift hold was super helpful to me, ty

[Utu-uilo]

Been searching for a few hours to find out how to rescale the preview window...thanks to you I found it...got yourself a Sub!

[NikolaTomic]

Just quick question: if play video playlist (I set it all to HD - 1920x1080), then comes video that is rendered in smaller resolution than HD, how to enable auto-scale for those videos only?

[catnipmouse]

Thank you this was so helpful, I messed up my sizing and could not figure out how to get it back! Many thanks!

[shazamrocks]

Thank you, I couldn't figure out how to do it myself. Your video really helped

[nvmnobody]

Thank You Brother. Easy, short and simple

[Ivotas]

Thank you very much. Worked like a charm.

[Layarion]

i wanted to know how to handle overscan issues cutting off the video. not all TVs let you adjust the overscan. like my Panasonic.

[juliosoares]

thank you so much for this video. the absolute best I've found on this topic.

[HPDStudios]

It is really difficult to figure out what that 'Canvas' behind the source image is... Often I want to record a video in a window but the window is not the same aspect ratio as the canvas. How is the background canvas (i.e. the black side bars that show up when you scale the source down) related to the source image? Obviously source images stack on the canvas, but it default records the canvas... not the source video leaving the side black bars or other content that perhaps I don't want.

[kermitsudoku]

i have a problem. sometimes when i alt tab, the window gets that black outline all round. so i have to reset everything over from time to time. is there an option to set it, so it never happens again?

[LezGrl]

Make sure your source isn't locked.

I only looked this up because adjusting the size wouldn't move the the video size. I then realized under sources that I had the screen locked so it wasn't allowing the image to move when adjusting.

My setup I use is two tvs. One is 4k and one is 1080p. So when I used my 4k tv as the source then obs wouldn't make the video full screen.

Everything is great now except I drop frames when recording now. But I read it has to do with windows having a capture screen going at the same time. So hopefully turning that off if it's on will make this setup work great.

[mikecfl]

this changes the size for all sources. Is there a way to change for only one source?

[gabs.t.b]

These key inputs like alt wont work on my obs, any help?

[Woomy.mp]

can you add this screen in fullscreen since it feels like fullscreen preview and fullscreen soucre fells laggy

[dhanishgola]

Please help me i have one video i want to crop its resolution freely how to do that and save that recording through obs

[comicsandtortillas]

i'll be at 1920x1080 and then something happens where the preview box is change to a smaller size.. i don't know what i'm doing wrong

[Nuhazel]

thanks that really fixed the issue i was having