Before adding subtitle files to any movie, make sure to add the exact SRT file for your desired movie format is download from the right source.
There are following steps to add SRT files into your desired video player:
You can download your desired SRT file of the movie to the exact file location on your PC, Mobile, or IOS device.
After copying the SRT file to the same location, the movie will play alongside with subtitles. There is no need for further configuration.
If the movie does not play with subtitles after step two. Then open your movie in your desired video player select tool or options and click on add subtitle, add your preferred SRT downloaded file from its location to the player. After doing this your video player will start showing subtitles in the movie you play.
If you are a VLC user then it is a more reliable and easy video player to add subtitles into your preferred movie clip. After playing the movie just drag and drop SRT file into video and it would start displaying subtitles.