Google has officially introduced an advanced auto-caption feature for all YouTube users.
YouTube continues to innovate, adding more functionality. The latest feature introduced by the famous video sharing portal is self captions, ie the translation of the video in real time, adding subtitles. This auto-captioning feature is currently only available for videos in which English is spoken. YouTube's auto-captioning leverages certain speech-to-text algorithms found in Google's Voice Search to automatically generate requested video captions.

Tokusei, the spoke man from google said, "The video owner can also download the auto-generated captions, improve them, and upload the new version," He also Explained in future "Viewers can even choose an option to translate those captions into any one of 50 different languages - all in just a couple of clicks. There will even be a 'request processing; button for un-captioned videos that any video owner can click on if they want to speed up the availability of auto-captions."
Google is planning to broaden the feature to include more languages in the months to come.
This is actually a Beta phase with some limitations, like auto-captions require a clearly spoken audio track. Videos with background noise or a muffled voice can't be auto-captioned. Other limitation included its not accurate either. Some user reported huge change in original voice and in caption. E.g: Original Voice “I’m just going to take this and kind of free form it,” and caption “I’m just going to take that a tax break for it.””
On, the Official YouTube Blog a spokesperson acknowledges “Auto-captions aren't perfect and just like any other transcription, the owner of the video needs to check to make sure they're accurate. In other cases, the audio file may not be good enough to generate auto-captions. But please be patient - our speech recognition technology gets better every day," he added.”

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