This is the video codec. It’s highly efficient, allowing for massive 4K files to maintain incredible detail without reaching impossible file sizes.
Are you having trouble getting the smoothly, or [NC-Raws] - 09 (B-Global 3840x2160 HEVC AAC MKV...
Because this is 4K HEVC, it requires a decent processor or a dedicated graphics card to play smoothly. Older laptops might struggle or "stutter." This is the video codec
This is the audio format (Advanced Audio Coding). It's a standard, high-quality compressed audio format that works on almost any device. or Because this is 4K HEVC
The "Matroska" container. It allows the file to hold multiple subtitle tracks and audio streams in one package. Viewing Considerations
Based on that file name, you're looking at a high-quality release of an anime episode. Technical Breakdown