Naya Daur is an 1957 Black and White Movie.
In 2007, it was released as a colour movie.
The colours were applied and jitter (moving of frames) was removed. Any marks which appeared on reels were also removed.
What you are watching is the song "Ude Jab Jab Zulfein Teri" (When your hair flows).
The quality of this clip isn't clear on YouTube. The actual clip is in higher resoloution.