12.09.2021, 15:56
Ok, seems it was user error 
Original VOB files in that movie have two subtitle tracks. One use 4:3 aspect ration and another is 16:9. So there is no problem with subtitles aspect ratio.
But problem with incorrect brightness Levels in subtitles and blurry look is still there.
Will try to play with extracted subtitle files in different players...
Original VOB files in that movie have two subtitle tracks. One use 4:3 aspect ration and another is 16:9. So there is no problem with subtitles aspect ratio.But problem with incorrect brightness Levels in subtitles and blurry look is still there.
Will try to play with extracted subtitle files in different players...