Record videos with Open Broadcaster software

last update: 07.04.2020

If you have your teaching content in digital form on your computer, you can record a lecture and this digital content with a special broadcaster software. This tutorial describes which steps in Open Broadcaster Software (OBS) are necessary for that.


Important notes are marked yellow.

Additional information is marked in blue.

Required equipment

Step 1: Install OBS

  1. Please download OBS from the official website Download OBS

OBS is an open source software that is available for all common operating systems: Windows, macOS and Linux.

  1. Install OBS on your computer. You may have to ask your ITB or administrator for help if your personal user account does not have the necessary rights.
    • You do not need to install any additional plugins.

Step 2: Configure OBS

  1. Run the auto-configuration wizard that OBS offers after the first start.
  2. Select that you mainly want to record.
  3. Please specify 1280x720 for the basic (screen) resolution. For the FPS (Frames per Second) 30.
  1. Apply the settings.

If you receive an error message at this point, please contact the ZML.

Step 3: Set up recording

  1. Under “Sources”, select “Screen recording” by clicking on the plus symbol.
  2. Select the monitor whose screen content you want to record. If you have only one monitor, only one source is displayed in the drop-down list.

Additional settings under macOS:

You must allow the OBS software to take screen shots via the system settings. You can find the setting under

System settings - Security - Privacy.

  1. If your screen has a higher resolution than the base canvas, you need to (virtually) reduce the screen by scaling to the red frame around the image until it fits into the canvas.

  1. Open the settings.
  2. Select “Output” under the tab.
    • Select the output path where you want to save the recordings. OBS automatically takes the date and time as file name.
    • Select the recording quality High quality, medium size files.
    • Select the output format mp4.
  3. Save the settings with a click on the button Okay.
  4. Your microphone/headset should be visible in the audio mixer. If necessary, deactivate all other signal sources, unless you want to play a video with sound in your presentation (then desktop audio must be activated).
  5. Test a short recording if everything works according to your imagination.

Step 4: Add more recording sources

You can add other image sources for your recording, such as a webcam or a second screen. Please note that you will only have one screen on which to display your content. If the font is easy to read, please make sure that the font size is selected accordingly.

For the example of an additional webcam:

  1. Add another source under “Sources”.
  2. Select “Video capture device”.
  3. Name the source for your recording setting. This naming is only used to organize the sources in OBS.
  4. Select your webcam in the “Device” selection box
  5. Scale and position the image of the webcam on your screen as you have already done with your screen content

Some tips

Next steps

Info & Contact

License notice

Creative Commons Lizenzvertrag
This tutorial for the creation of digital teaching material of the Center for Technology-Enhanced Learning (ZML) at the Karlsruhe Institute of Technology (KIT) is licensed under a Creative Commons Attribution 4.0 International License.


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