C++ Library

[nlogozzo]

Hi,

I'm trying to create a C++ library to download videos from YouTube similar to this library and libvideo.
Something simple to just download the mp4 and if needed I'll use ffmpeg to convert to other formats.

I was passed along this blog post, https://tyrrrz.me/blog/reverse-engineering-youtube , to help me create an algorithm/procedure for this task.
However, I noticed a note in the post stating that the algorithm in that blog post is outdated and no longer used in this library to download videos.

Therefore, I ask for an updated blog post or an outline of the algorithm/procedure used by the library now for accomplishing the simple task for finding the mp4 file of the video from YouTube to download.

Thanks in advance.