Fix bug: crashed when setting the transparency of video.
1) Import your video from camera roll
2) Tap the plus sign icon (+ Button) to add your painting (choose brush size and color, duration time and animation set of the painting)
3) To cut unwanted video moment, firstly tap on the original video clip, click on “Edit” button from the menu and then select “Crop & Cut”, select the video portion with precise frame-by-frame and then mark “Start” & “End” time to remove the unwanted moment;
4) To delete a painting, tap the painting clip and then press the garbage can icon;
5) To delete the whole project, tap on the background video and then press the garbage can icon;
6) To add music, tap the “Music” button, and then tap “Add music”. You can adjust the volume of the music video with the volume controller.