v11.4 1. Modify the video extract function interface 2. Modify video playback time to seconds 3. Background color function add color picker 4. Modify the text of the prompt in the convert video interface 5. Overlay function adds selection of images 6. Add modify the size of the image when add background photo 7. Performance and user experience optimization 8. Update Billing SDK and Ad SDK version 9. Remove the dependency of Play Core library