Actually, Hulu and YouTube both have existing technologies in place. And captioning is entirely separate from subtitles - they occupy a completely separate data channel, so it has to be deliberately omitted. True, many DVDs omit captions and just use English subtitles instead, which is reasonable if not 100% strictly kosher, because captions and subtitles serve different purposes. On top of which, if either is present, it's a simple text file with timing cues. You just do what YouTube did - adapt existing technology to display the captions, or not, as the user deems fit.
[Not touching the YouTube autocaptioning feature, because ROFLOLOL CAPTION BLOOPERS GALORE, but hey, at least they're pretending to try.]
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Date: 2010-11-23 09:26 pm (UTC)[Not touching the YouTube autocaptioning feature, because ROFLOLOL CAPTION BLOOPERS GALORE, but hey, at least they're pretending to try.]