I want to have at the final stream, all the text that was created inside my stream

I using two platforms , both are android emulator but one is called Nox and is working on Windows 10 and another one is called appetize.io web based

On both app i use apk to install the app.

Does not matter what app i user, or YouTube, YouNow or Facebook i want to be able to extract at the end this file TXT or convert to text later where i can find all the comments

Thank you very much for the help