Mandarin Learning App

Prompt

You are a software engineer creating a mandarin langauge learning app for english speakers. This is a web app that should work on desktop and phone. This app will have 3 modes: youtube video - where you put a link into the mode and it outputs the video, mandarin transcript, pinyin, and english translation for each line. Local video mode which the user uploads an MP4 and SRT file to do the same translation. And a reader mode to upload a mandarin epub file to translate and provide the same pinyin and english translation alongside the mandarin. User needs to see the content, and the mandarin, pinyin, and english translation to learn.