For the new online format of EAC2020 we have all to learn new skills in presentation techniques. Talks are not given online but have to be recorded prior to the conference. The audience now will have the opportunity to see your presentation in advance. We all reconvene online only for discussion sessions.
To give you some advice in this new field, we will describe two possible solutions to manage this task. Most of us are using PowerPoint™ from Microsoft®. There is a built-in solution to turn your presentation into a video. A more general solution is screen recording, which offers you much more flexibility. Please feel free to find the right solution for you.


  • Create your presentation.
  • Now you have the choice to proceed with the next step or record your presentation using „screen recording“ (see below).
  • Powerpoint supports adding timing and narrations to your presentation: see record timing and narrations as well as laser pointer gestures. These links will open a new tab and guide you to the associated Microsoft support pages.
  • Finally you have to export your presentation as a video. The following link will guide you to the Microsoft support page describing how to produce a video including narration from different versions of PowerPoint starting PowerPoint 2010 – Office365: see turn-your-presentation-into-a-video
  • Please use „Full HD (1080P) and mp4 format for the export.
  • Office 2010 only provides the format „Windows Media Video“ (.wmv) to record your presentation. Please used e.g. the popular  VLC Media Player to convert your .wmv video to .mp4 file format. (select Media->convert/save; click „Add and select your presentation; Click „convert/Save“; in the following window click on  the dropdown list „profile“ and  select here „Video MP4 1080“, enter in „destination file“ the filename of the MP4 video to be stored  and click „Start“ to start the conversion… take a coffee!!
  • Please be aware that EAC2020 organizers are not responsible for the content of the provided links.

Screen Recording

In principle there are multiple screen-recording software on the market. In the following we are focussing on the „OBS Studio“ software, because this powerful software is open source and available for Windows, Mac and Linux. You are welcome to record your presentation with your favorit software. Please assure that the final video will be encoded in mp4 file format at a resolution of 1920×1080.

We have compiled a quickstart guide for installation and configuration for EAC2020 purpose.

Please note that the EAC organizing committee can’t provide support on this particular software. In case of open questions, please visit the Wiki page of the project or the active and informative user forum.


  • Visit
  • Select your operating system and follow the installation instructions.
  • After installation the auto-configuration wizard will automatically be launched. This wizard will automatically test your system and attempt to find settings that your PC can handle. This includes recording, resolution, bitrate, encoder and more. In case settings are not as intended after running the auto-configuration wizard, please find the respective entry under ‚File -> Settings‘.

Setup your audio devices

By default, OBS Studio is set to capture your system default desktop audio device and microphone. You can verify this by looking at the volume meters in the mixer section of the main OBS Studio window, and see if they are active. If they aren’t moving, or you suspect the wrong device is being captured, click on Settings -> Audio and select the devices manually.

macOS users: If you’re on macOS, you’ll need an extra app to capture desktop audio. This is due to limitations in macOS that provide no direct capture methods for desktop audio devices.

Getting started

    1. Start your presentation in full screen mode and change back to OBS Studio.
    2. Select on „source“ tab  „+“. (Figure 1)
    3. In the popup menu select „Window capture„. (Figure 1)
    4.  In the following popup window select „create“ and then OK.
    5. In the following popup window select the full screen presentation. (Figure 2)
    6. Check in the preview if the correct window was selected and press OK afterwards.
    7.  Make sure that the „Recording Format“  is set to .mp4,  see: Settings -> Output (Recording) ->Recording Format (Figure 3)

Add your webcam (optional)

Repeat step 2 of “getting started”, but now select „Video Capture Device“ in step 3. Here you can select the proper device using the dropdown list of all found devices and Configure Video Settings. In most cases the default settings will make it for you. Pressing OK will add the device to the preview. Now adjust size and position.

Add Hotkey (optional)

In the settings (File -> Settings -> Hotkeys) you can freely define Hotkeys for „Start, Stop, Pause and much more“ to make live easier for you while recording. Using the mouse, select the category (e.g. Start Recording) and then press the key of your choice (e.g. F12 or combinations like ALT + F12).


Now you can start, pause and stop the recording like shown on Figure 4 in the following gallery.
The recorded file you can find by selecting „File„-> „Show Recordings

Some suggestions

  • Make a storyboard of your talk including timing (remember the limit of 12 minutes).
  • Look for a quiet place, avoiding background noise.
  • Test scene light and camera position, thus your picture is clear visible.
  • Test, test, test!

OBS has much more possibilities e.g. including a Sound and Video filter and much more. Please discover the full functionality by visiting the online documentation:

In case of any trouble visit the Troubleshooting-Guide:


For details see guiding pictures in the gallery (click on the image to enlarge)