It sounds like you're looking for a text description or file name to label English subtitles for Avatar 1, possibly with an indication of "extra quality" (e.g., higher bitrate, better sync, or additional caption formats like SDH or forced narratives).
Perfect Sync: No annoying delays between the speech and the text, specifically calibrated for 23.976 fps Blu-ray releases. avatar 1 subtitles english extra quality
Why this is a good feature:
Forced Subtitles: Because Avatar features the fictional Na'vi language, you specifically need "English Forced" subtitles to understand those sections while the rest of the movie remains in English. It sounds like you're looking for a text