When media files are labeled as "extra quality," it generally refers to specific technical standards in video encoding and audio bitrates:
The Prestige is a movie that demands to be watched, and then watched again. It is a cinematic illusion that holds up perfectly, and experiencing it in high-quality dual audio makes the experience even better. i the prestige 2006 dual audio hindienglish extra quality
Decoding The Prestige (2006): Why Audiences Still Search for the Ultimate Dual Audio Cinematic Experience When media files are labeled as "extra quality,"