Well, i was watching a Japanese movie but i cannot know what they are saying (Sword Art Online: Ordinal Scale), then i downloaded chinese subtitles (Yep, i'm a chinese) than i used a player called Xunlei player (NOT AD) after loading the SUP subtitle it displays at the corner author information only, then i use BDSup2Sub convert it, and it was ok. I loaded the idx/sub file with the player and shift a little bit the timeline and it was looking great, minutes after player crashed and restarted automatically, when i load the video and the subtitle again nothing subtitle has displayed, and i don't know what is causing. Later i open BDSup2Sub, load SUP subtitle and browse to ID 43 of the subtitle and i saw nothing or invisible letters, It's strange because with the Subtitle edit i see subtitles later of ID 43. Why is this happening?