14. A method, comprising: causing a processor to perform a phonetic transcription of an audio segment corresponding to a textual phrase in closed captioning from a video media source responsive to detecting a difference in pronunciation between the audio segment and a baseline audio pronunciation associated with the textual phrase from a speech recognition library, wherein the speech recognition library comprises the baseline audio pronunciation and collected audio pronunciations of the textual phrase, and wherein the video media source comprises image data, audio data, and closed captioning data; and responsive to detecting a difference in the pronunciation; causing the processor to store the phonetic transcription of the audio segment in the speech recognition library as one of the collected audio pronunciations to populate the speech recognition library; and adding the audio segment corresponding to the textual phrase to the speech recognition library to populate the speech recognition library.
18. The method as defined in claim 14 , further comprising: detecting occurrences of the textual phrase in the closed captioning of the media source; and selecting the audio segment from the media source where the textual phrase is detected in the closed captioning.