YouTube UK Blog: The Future Will Be Captioned: Improving Accessibility on YouTube

The Future Will Be Captioned: Improving Accessibility on YouTube

Thursday, 4 March 2010

Tens of millions of people in the U.S. experience some kind of hearing impairment and recent studies have predicted that over 700 million people worldwide will suffer from hearing impairment by 2015. To address a clear need, the broadcast industry began running captions on regular video programming in the early 1970s. Today, closed captions on video are more prevalent than ever. But generating captions today can be a time-consuming and complicated process.

Making video easily accessible is something we're working hard to address at YouTube. One of the first steps we took was the development of a caption feature in 2008. In November of last year we released auto-captioning for a small, select group of partners. Auto-captioning combines some of the speech-to-text algorithms found in Google's Voice Search to automatically generate video captions when requested by a viewer. The video owner can also download the auto-generated captions, improve them, and upload the new version. Viewers can even choose an option to translate those captions into any one of 50 different languages -- all in just a couple of clicks.

Today, we are opening up auto-captions to all YouTube users. 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. It will take some time to process all the available video, so here are some things to keep in mind:

While we plan to broaden the feature to include more languages in the months to come, currently, auto-captioning is only for videos where English is spoken.

Just like any speech recognition application, auto-captions require a clearly spoken audio track. Videos with background noise or a muffled voice can't be auto-captioned. President Obama's speech on the recent Chilean Earthquake is a good example of the kind of audio that works for auto-captions.

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.

Auto-captions should be available to everyone who's interested in using them. We're also working to provide auto-captions for all past user uploads that fit the above mentioned requirements. If you're having trouble enabling them for your video, please visit our Help Center: this article is for uploaders and this article is for viewers.

Hiroto Tokusei, Product Manager, recently watched "How to Eat Stick Candy Fast."

24 comments :

Unknown4 March 2010 at 18:40
This beta is not good if you are watching a person even with a SLIGHT accent. I recomend waiting to get this feature until improved a bit more.
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KayBlue105 March 2010 at 12:34
This is such a fail, it's a win.
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Unknown6 March 2010 at 02:33
This reallly Sucks ive got a scottish accent and it is just not coming up with anything tht i am saying
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Unknown18 March 2010 at 11:00
it would need to be updated, because even people talking perfect English, the wrong spelling is coming up, of what their saying. Though the subtitles is a good thing for the deaf and hard of hearing, it has to be improved on.
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