: The Video Codec (High-Efficiency Video Coding). It provides high visual quality at smaller file sizes compared to older codecs like H.264.
: The Audio Codec (Advanced Audio Coding), a standard compressed audio format.
: The File Container (Matroska). It is popular for anime because it can hold multiple audio tracks and subtitle files in a single file. [ ] - 09 (B-Global 1920x1080 HEVC AAC MKV) [858...
: This indicates the Source Platform , specifically Bilibili Global (the international version of the Chinese streaming giant Bilibili).
: Likely the beginning of a CRC32 Checksum , a 32-bit hash used to verify that the file was downloaded without errors and has not been corrupted. Source Characteristics : The Video Codec (High-Efficiency Video Coding)
: B-Global sometimes releases episodes earlier for "VIP" users than they air on television in Japan.
: This typically represents the Episode Number within a specific season. : The File Container (Matroska)
: The Video Resolution , also known as Full HD or 1080p.