I created this test file here to check out the new OverlaySlides functionality in CP2019. I used a local (“From your Computer”) .mp4 video and one YouTube video. On desktops everything works as expected. However, on mobile devices (I tested on 3 Android devices), the local video is no displayed; all I hear is the audio. The YouTube vid works fine on mobile. Has anyone else experienced this and, more importantly, how can this issue be fixed?