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

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

The Matroska format, which allows multiple subtitle tracks and audio streams to be bundled in one file. [ ] - 09 (B-Global 3840x2160 HEVC AAC MKV) [79D...

The video is a web-rip from the Bilibili Global streaming platform.

A standard compressed audio format (Advanced Audio Coding). Because your query has an empty bracket [

Based on standard release patterns for this naming convention, here are the technical specifications:

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 A standard compressed audio format (Advanced Audio Coding)

This is 4K (Ultra HD) . Note that most TV anime is produced at 720p or 1080p, so these 4K files are often upscaled by the streaming platform or the release group.