how to add subtitles to a video we start to upload the file we want to subtitle than click on edit button and select “Subtitles” Define the original language of the video. Click on your language “automatic” to start modifying the text YouTube has recorded. When finished click on “Publish” At this point we suggest to download the file with extension .vtt you can open it with Windows Notepad. Here is how it appears. The language you have chosen, the beginning and the ending time of a sentence. The time format. Here you can change again the transcript and timing and then reload it. If you modify and rename this file you can upload another language and so on its easy isn’t it?