Hi Gábor,
> I would still consider having a placeholder image to cover for the > possibility that there might be parts where no slide or screen > recording is shown. But we might make it a policy to always show > something. WDYT? There should always be something on the screen. If the topic changes and the previous frame is no longer relevant then there really should be a new slide. Sometimes it can be enough to “echo” a question that is spoken in the narration and display it as a slide. The exact approach depends on the video, but a well-written script will ensure that the flow of information will not introduce awkward gaps in the way the material is presented. -- Ricardo