Over a billion videos on YouTube are accessible to viewers with difficulties in hearing, thanks to the video giant's automated captions, it said Thursday. From a report on Variety: That certainly sounds impressive -- except when you realize that many of the site's automatically generated captions aren't completely right. The Google-owned video giant first launched captions back in 2006, and three years later introduced automatic speech recognition to add closed-captioning to YouTube content. Today, YouTube users watch video with auto-generated captions more than 15 million times per day. But the system is prone to errors. For example, the trailer for Amazon Studio's Oscar-nominated "Manchester by the Sea" (at this link) includes numerous inaccuracies in the auto-transcribed captions, sometimes to hilarious -- not to mention frustrating -- effect.