14. A computer-readable storage device storing instructions which, when executed by a processor, cause the processor to perform operations comprising: comparing a transcription of a media presentation to a list of anchor word candidates to identify a pair of anchor words separated from one another within the media presentation by a time greater than an anchor word time duration requirement; and generating captions by aligning the transcription with an automatic speech recognition output of the media presentation according to the pair of anchor words.
19. The computer-readable storage device of claim 14 , wherein the media presentation is in real-time, and wherein the computer-readable storage device stores further instructions which, when executed by the processor, cause the processor to perform an operation further comprising: buffering the captions based on the media presentation and the aligning of the transcription to yield buffered caption; and outputting a delayed media presentation and the buffered captions together.