19. The computer-readable storage device of claim 17 , wherein the anchor word time duration requirement represents a minimal time duration requirement between words in the pair of anchor words.
19. The computer-readable storage device of claim 17 , wherein the anchor word time duration requirement represents a minimal time duration requirement between words in the pair of anchor words. 20. The computer-readable storage device of claim 19 , wherein generating the captions further comprises aligning the transcription between the pair of anchor words.