Telephone Issues

Youtube Videos Get Automatic Captions. 1080p Videos Roll-Out

Seems that the Youtube developers are finally starting to implement new features at the popular video hosting portal. After the announcement of 1080p video support which began rolling out in the last 24 hours. There does not seem to be an option just yet to search for those 1080p videos on Youtube. Youtube videos that are already available in 1080p quality will offer a menu that becomes visible when pressing the HD button. This button will give the user the option to watch the video either in 720p or 1080p. See the example below for a video that can be viewed in 1080p on Youtube.

youtube videos

You can watch that video directly at Youtube by following this link. The 1080p videos seem to make use of the &fmt=37 parameter which can be added to the url to see if the Youtube video supports 1080p.

The second feature consists actually of two technologies: automatic captions and automatic timing.

Auto-Timing: Upload a transcript (a simple file with the text of what’s said in the video), and through speech recognition technology we’ll turn it into synchronized captions. Timing is the toughest part of creating captions, but now this should be much easier. The technology works best for videos with good sound quality and clear spoken English.

Automatic timing ensures that an external transcript is being used to avoid errors during speech recognition. This does however mean that a transcript of the video needs to be available. Youtube will automatically turn the transcript into synchronized captions through the use of speech recognition technologies.

Auto-Captions: We use the same speech recognition technology to create machine-generated captions (which can then be translated into 51 languages). You can see auto-caps in action right now on a range of educational channels, such as UC Berkeley, Stanford, MIT, Yale, UCLA, Duke, UCTV, Columbia, PBS, National Geographic, Demand Media, UNSW and most Google channels, including YouTube’s. Click on the menu button at the bottom right of the video player, then click CC and the arrow to its left, then click the new “Transcribe Audio” button. In time, we hope to expand this feature for many more YouTube videos.

Automatic captions on the other hand uses speech recognition not only for timing purposes but also for creating the video transcript.