Help Wanted | Descramble "N" Signature | Slow Download

[omansak]

I decided to remove JS Engine and add native code/algorith for DescrambleNSignature.

Code File :
https://github.com/omansak/libvideo/blob/master/src/libvideo/YoutubeVideo.Descramble.cs

Examples :
https://github.com/pytube/pytube/blob/d3d18691b3e99b2d3b4d620446b088a1c32896c6/pytube/cipher.py#L48
https://github.com/anxdpanic/plugin.video.youtube/blob/0120ae212d958ff93e8e937f378d28654d22dc5b/resources/lib/youtube_plugin/youtube/helper/ratebypass/ratebypass.py#L419
https://code.videolan.org/videolan/vlc/-/blob/master/share/lua/playlist/youtube.lua

Test Branch :
https://github.com/omansak/libvideo/tree/descramble-n

References :
ytdl-org/youtube-dl#29326 (comment)
https://github.com/pytube/pytube/blob/fc9aec5c35829f2ebb4ef8dd599b14a666850d20/pytube/cipher.py