Adding shapes and images to existing video files. To add images or

Adding shapes and images to existing video files. To add images or blackout shapes on top of existing video we would recommend you to use ffmpeg (open source that is supported by Google and used on YouTube) to add blackout regions or image overlays to the output video. Please check this article: https://video.stackexchange.com/questions/12105/add-an-image-in-front-of-video-using-ffmpeg