mp4 file limitation in captivate, stop after 10 mp4 files

I have 12 mp4 files in the captivate 2017 Project (10.0.0.192) inserted as progressive-download-video on 12 different pages. I have imported the Scorm-Output in an LMS (Moodle). When i randomly view 10 Pages with this mp4 Content than the 11. page with mp4-Content is not shown. The Video does not run, there is a black page. Only the video-control bar is shown, nothing else. The files are between 3 – 18 MB, produced with edius and encoded with adobe media […]