Parsing and Converting TED Talks JSON Subtitles

My guess would be that the times in the json are expressed in milliseconds, e.g. 1000 = 1 second. There is probably a maintimer, where startTime indicates the time on the timeline at which the subtitle should appear and the duration is probably the amount of time the subtitle should remain in vision. This theory is further affirmed by dividing 186000 / 1000 = 186 seconds = 186 / 60 = 3.1 minutes = 3 minutes and 6 seconds. The remaining seconds are probably applause ;-) With this information you should also be able to calculate from what frame to what frame you should apply your conversion to, i.e. you already know what the frames per second is so all you need to do is multiply the number of seconds of starttime with the FPS to get the begin frame. The end frame can be obtained by: (startTime + duration) * fps :-)

I made a simple console-based program to download the subtitles. I was thinking of making it available via web using some script system like grease monkey... Here is the link to my blogpost with the code.: http://estebanordano.com.ar/ted-talks-download-subtitles/