Automatically switch to local language, bilingual subtitles, subtitle download, subtitle dubbing, custom subtitle style. Default subtitles: Set the translation language. Single subtitle: Switch between bilingual subtitles and single subtitles. Subtitle download: Download video subtitles and translated subtitles, support .txt, .srt. Custom subtitle style: Font size, font, color, background, order, text stroke, spacing. Single subtitle and double subtitle can be set separately. Custom styles can be turned off. More optimizations: Video quality lock Video autoplay lock Subtitle status locked Subtitle position lock Subtitle text copy