Ramayanam
The story dealt with Lord Rama and his retaliation over Ravana, in which all the characters played in the film were child artists.
Starring N.T. Rama Rao Jr.
Watch "Ramayanam" on Amazon released in 1996. It's a drama and history movie, and has a rating of 7.6 out of 10 from Imdb which is usually fine for this kind of movie, and is currently only available for purchase or rent.