The file is a pirated copy sourced from a DVD screener of the original 2007 festival version of Paranormal Activity , compressed two decades ago with a codec that has been obsolete since the rise of x264 and x265. The repack suggests the first upload had flaws.
and other boutique distributors have since released "Limited Edition" Blu-rays that officially include the original "Festival Cut" and alternate endings. paranormalactivity2007limiteddvdscrxvidbl repack