480i NTSC anamorphic widescreen (16:9) with an original aspect ratio of 2.39:1.

Since you are asking for a "proper piece," you are likely looking to acquire this file. Be aware:

exist, the Ayngaran DVD9 "untouched" version is prized for its technical fidelity and comprehensive features. Technical Profile

The "untouched" DVD9 version preserves the original digital mastering without further compression to fit smaller discs.

The release of (2010) on DVD9 is widely considered the gold standard for physical collectors of this sci-fi blockbuster, particularly because a dedicated Tamil-language Blu-ray was never widely produced for the Indian market. Technical Value of the "Untouched" DVD9