Additionally, some video players allow for on-screen display options, like forcing subtitles to show always, bypassing any automatic detection that might be picking up the wrong language or none at all.
I should also mention verifying that the subtitle is actually included in the file or available in the same directory with the same name as the video file, as some players look for matching SRT files. hindi sxs video fix
Possible solutions could include checking the video player's subtitle settings, ensuring the correct subtitle file is used, converting the subtitle format if necessary, using different codecs or players, and adjusting system regional settings for proper script rendering. Additionally, some video players allow for on-screen display