Subtitling or captioning means inserting captions into video or other audiovisual materials. Subtitling can be preceded by transcription and translation if you have a video in the original language, and the text needs to be transcribed, translated into the target language, and then inserted into the video. Subtitling is different to other types of translation as there is only a limited amount of space on the screen, so the translator must often condense the message or only select the most important parts of the conversation.