How do I transcribe a video for closed captions and/or subtitles?
If you already have a shooting script, lecture notes, etc., these can be used to partially or completely eliminate the need to transcribe the video. If you don’t have a script at all, the fastest way to get a transcript (and the most popular option for live captioning) is to use a professional stenographer (like a court reporter) who has the specialized skill to operate a steno machine, allowing them to type much faster than on a regular keyboard. Because this is a special skill that takes years of training, stenographers tend to charge a lot of money. Another option used for live captioning is a shadow speaker, who listens to what is being said by all voices in the video and repeats them in his/her own voice, using a speech recognition system (see below) to turn the speech into text.