A higher bitrate means less compression. Aim for files that balance file size with visual fidelity (typically between 2 GB to 5 GB for a well-optimized 1080p encode).
Typically, a "dual audio" file contains two separate audio tracks muxed into one MKV container (Matroska Video). The primary track is often the original English 5.1 DTS-HD or AC3 (Dolby Digital). The secondary track is usually a localized dub—for Star Trek , this is frequently Japanese, German, French, Spanish, or Hindi.
To understand why this specific phrase populates search engines, it helps to break down the technical file nomenclature used by online archives and file-sharing communities: