In technical terms, a "Repack" is a re-release of a file where the encoding group has fixed an error present in their original release. It is a stamp of quality control, a signifier that the previous version was discarded in favor of a superior master. For Chappie , a film heavily reliant on visual effects and a distinct visual style that mixed practical sets with heavy CGI, preserving the visual fidelity was paramount.
= Likely a pirated copy of Chappie (directed by Neill Blomkamp) that has been re-released by a warez group to correct errors in an earlier rip. chappie2015 repack
In digital enthusiast communities, a "repack" is a release of a game or film that has been compressed using advanced algorithms to make the download size significantly smaller than the original installation or file. In technical terms, a "Repack" is a re-release