At least two people are required to carry out the laboratory. The main actor lays out the teaching content and stands centrally in front of the camera. He answers questions and provides a good insight into the teaching content.

The second employee serves as support and moderator. He moderates the cameras, the stream and the chat. If the main lecturer overlooks a question from the plenum, it will be passed on and repeated by the second research assistant.

The following Image shows the workspace dedicated for streaming the digital live laboratories. Marked with the number “1” is the main lecturer.Followed by number “2”, the assistant who works behind the cameras to maximize the stream quality as much as possible. Number “3” are the used Cameras for the Streaming. At least one face camera is required for the main lecturer and one close-up camera for the main lecturer's working area. Number “4” shows the control monitor. On this control screen, the main lecturer can monitor the stream and simultaneously check whether the correct cameras are switched in the main picture. He can also monitor the chat and respond quickly to questions from the study plenum. Number “5” shows the moderator's stationary workstation. The stream is managed at this computer workstation.

OBS is used as the streaming software. The minimum equipment of the HAW laboratories consists of :

• Close-up camera model : Canon EOS M50
• Facecam model : Logitech Brio 4K Stream Edition
• Bluetooth microphone model : Rode Wireless GO

Optionally, additional cameras are set up and used for some laboratories to produce detailed images or thermal images. These additional cameras are:

• action camera model : Insta360 One RS 4K Edition
• Thermographic camera model : thermoIMAGER TIM M-1

A separate workstation is also prepared for recording, updating and improving the laboratory on demand videos. Both the streaming setup can be used for the recordings and a separate workstation with a neutral background, as shown in the image below, can be used. The camera used is the Canon EOS M50 already mentioned in the streaming setup.

The recorded material is then cut, edited and put together in the "Adobe Premiere Pro" program. New videos are recorded without spoken word. They are dubbed afterwards to maximize the sound quality. To ensure that the lab on demand videos are compatible on all end devices, the subtitles are inserted statically into the videos. The video format chosen is MP4 with h264 encoding. This means that they can not only be viewed on all end devices without any problems, but can also be embedded and shared on most websites without any problems. A screenshot of the software during video creation is shown below.