While installing SRT of the movie, for example, District 13: Ultimatum English Subtitles, download and copy to the downloaded file to the exact file location of the District 13: Ultimatum movie on your mobile phone or personal computer or television.Below are the steps to add to any movie player you are using to start. How to add District 13: Ultimatum YIFY Subtitles to your movieīefore you can add any subtitle file to any movie, you must make sure the exact SRT file for the particular movie format is downloaded from the right source.