I have put a new video export tool onto GitHub (https://github.com/aleutgeb/SoziVideoCreator). This tool is based on Selenium (https://www.selenium.dev) in combination with the Firefox web browser (https://www.mozilla.org/firefox). For each video frame the converter takes a screenshot of the running presentation at the desired frame rate. Afterwards these individual frames are composed into a video via ffmpeg (https://ffmpeg.org). The conversion process even works with videos embedded into the presentation. This works by adjusting the timings in the Sozi presentation and the playback rate of the embedded videos.