If you are seeking for [WWDC 2013 Video Subtitle] (https://github.com/qiaoxueshi/WWDC_2013_Video_Subtitle), click [here] (https://github.com/qiaoxueshi/WWDC_2013_Video_Subtitle)
These subtitle contents are provided by Apple, the original files are Webvtt format which is not a most frequently used format, so I fetch them from Apple website, then combine and translate them to srt format which is supported by most of video players.
Thanks to Edward, he told me some of the videos in the WWDC apps had got English subtitles yesterday and he is paying close attention to this thing all the time.