Youtube today added an Auto-captioning feature. This will add captions to videos on Youtube automagically. This will make youtube videos enjoyable to both users with sound disabled and deaf users.
The Transcription will be shaky for a long time, just like it is/was with Google Voice. However Google Voice progressed quickly and now offers really close transcriptions every time.
I expect YouTube to go the same way with transcription. I expected to see this feature in youtube a long time ago, when I first saw the CC icon in youtube. I wondered, why haven't they started doing it? they have searching for audio available for political video, they need it now for regular youtube videos.
the image is of the Google Release of this new feature