YTCrack 
(ver 0.50b)
Freeware


YTCrack enables users to obtain and play YouTube videos 
with only DOS based, or scripts-support-free, tools such 
as DosLynx, FFMPEG, and MPLAYER.  It does so by converting 
a saved obfuscated YouTube embed file into a normal file 
that is understandable by these programs.  

Note: Although the software appears to be working, I have
not personally attempted to convert a file.