Are you having trouble getting the smoothly, or
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...
Based on that file name, you're looking at a high-quality release of an anime episode. Technical Breakdown Are you having trouble getting the smoothly, or
The "Matroska" container. It allows the file to hold multiple subtitle tracks and audio streams in one package. Viewing Considerations [NC-Raws] - 09 (B-Global 3840x2160 HEVC AAC MKV...
Use a modern player like VLC or MPC-HC with the LAV Filters to ensure the HEVC video decodes properly.