SOT is an acronym for Sound on tape. It refers to any audio recorded on analog or digital video formats. It is used in television and film script writing to indicate portions of the video that will use the natural sound from the time of recording, as opposed to audio recorded later (studio voice-over, foley, etc).

Sources

• http://www.videomaker.com/article/10785
• http://www.state.gov/r/pa/obs/12471.htm
• http://www.nvm.org.au/General%20Articles.htm#WHAT_IS_NAT_SOT