: MKV files can contain multiple audio and subtitle streams.
But numbers don't tell the whole story. includes:
Files downloaded from untrusted sources with names like "immortal.mkv" can occasionally be used to deliver harmful scripts or exploit vulnerabilities in outdated media players. Always ensure your media player is before opening files from unknown origins. Anime folder hashes - GitHub Gist
No verifiable source has proven the supernatural claims. However, the technical reality of immortal.mkv is far more interesting.