Python script change gui add ffmpeg

Hi, I have a python script that works very well but I want to add more features to it and improve the GUI (I HAVE THE SOURCE): 1. I want to add the option to ADD PROJECTS / We will add a button called: ADD NEW PROJECT 2. on the right side of the software we will add the option to IMPORT IMAGES 3. TEXT AREA: we will have a text are where I can paste TEXT ... we will add SHORTCODES after EACH PARAGRAPH ONLY there is going to be a button called FILL IN IMAGE SHORTCODE that will LOOP using the number of images 4. A field to add the project name, a button to open the project folder name 5. A preview video player using windows media 6. A button to create a VIDEO (that will save the project too). How do we create the video? We will use ffmpeg or similar to JOIN each part... A= my python script create mp3 files (THAT IS DONE), you need to be sure where to add the image (paragraph are our markers for the shortcode) B= We will JOIN the images to create the video, each image will last what EACH paragraph MP3 last (my python script creates the MP3 FILES, you just need to grab them and use them. A+B = video ...and I can preview it on the video player once is done. Thanks NOTE: Check the image to get an IDEA of the GUI <<