LG 60LA740S.AEE User Manual page 130

External subtitle formats supported :
*.smi, *.srt, *.sub (MicroDVD, SubViewer 1.0/2.0),
*.ass, *.ssa, *.txt (TMPlayer), *.psb (PowerDivX), *.dcs (DLP Cinema)
Internal subtitle formats supported :
• Full HD Video
1920 X 1080: XSUB (supports internal subtitles generated from DivX6)
• [Supports only ULTRA HD model] ULTRA HD Video: It does not support
internal subtitles.