An experimental PDF importer is now available. You can find it on https://pdf2mp4.infobeamer.com/. It allows you to upload PDF files by converting them into an info-beamer compatible MP4 video file right within your browser. You can select four different layouts depending on how the resulting video layout should look like. The feature requires a reasonable new browser to work.
Right now the feature is implemented as an oauth app, so you’ll have to grant it access to your account upon first usage. You can later always remove access again in your account access page.