Open File Picker Window on Button
To allow a user to select a new image source using the operating system's File Picker window, you can write a script that executes when a button is pressed. The script to open the File Picker is: path = ui.chooseFile(fileTypes=['mov','mp4']). The ui.chooseFile() function launches the File Picker window and returns the path of the selected file, which is stored in the variable path. You can then assign this path to a moviefileinTOP to load the selected source.