From 2007 to 2009 organizations including , , and the English have filed lawsuits against YouTube, claiming that it has done too little to prevent the uploading of copyrighted material.
It is not possible for the viewer to directly choose a higher quality for any selected resolution.
In April 2011, YouTube announced the rollout of YouTube Live.
In December 2008, support was added.
TestTube Experimental features of YouTube can be accessed in an area of the site named TestTube.
These questions have been raised in the past, as YouTube has had to remove channels with children's content which, after becoming popular, then suddenly include inappropriate content masked as children's content.
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The service continued to evolve in 2015, when YouTube announced YouTube Red, a new premium service that would offer ad-free access to all content on the platform succeeding the Music Key service released the previous year , premium original series, and films produced by YouTube personalities, as well as background playback of content on mobile devices.