8. A system comprising: a processor; and a computer-readable storage device storing instructions which, when executed by the 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.
8. A system comprising: a processor; and a computer-readable storage device storing instructions which, when executed by the 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. 12. The system of claim 8 , wherein the computer-readable storage device stores further instructions which, when executed by the processor, cause the processor to perform an operation further comprising outputting the media presentation with the captions.