- 09 (b-global 3840x2160 Hevc Aac Mkv... | [nc-raws]

The "Matroska" container. It allows the file to hold multiple subtitle tracks and audio streams in one package. Viewing Considerations

This is the audio format (Advanced Audio Coding). It's a standard, high-quality compressed audio format that works on almost any device. [NC-Raws] - 09 (B-Global 3840x2160 HEVC AAC MKV...

Are you having trouble getting the smoothly, or The "Matroska" container

This is the "release group." They are known for providing clean, high-bitrate "raw" video, often sourced directly from streaming services like Bilibili (indicated by B-Global ). high-bitrate "raw" video