I'm trying to overlay a video recorded with an external camera but the "Export" button is not appearing. HLT Version: Rookie v24.0 Mobile OS: Android 10 Video: 1920x1080 30fps - MPEG-4 - 309,7 MiB - Duration 0:02:13 - Bitrate 19,5 Mbit/s Steps: - Put the video in the Android/data/com.harry...