[ ] - 09 (b-global 3840x2160 Hevc Aac Mkv) [79d... Info

Also known as H.265 , this high-efficiency codec allows for high video quality at relatively small file sizes.

A standard compressed audio format (Advanced Audio Coding). [ ] - 09 (B-Global 3840x2160 HEVC AAC MKV) [79D...

Because your query has an empty bracket [ ] , it matches several popular anime series released in this specific "B-Global" 4K format: [NC-Raws] Made in Abyss S2 - 09 [NC-Raws] SPY×FAMILY - 23 [NC-Raws] Bleach: Thousand-Year Blood War - 09 [NC-Raws] Overlord IV - 09 Identifying the Exact Series Also known as H

The string at the end (likely 79DXXXXX ) is a CRC32 checksum used to verify that the file was downloaded without errors. Common Releases with this Pattern Also known as H.265

The Matroska format, which allows multiple subtitle tracks and audio streams to be bundled in one file.