I am working on a video streaming channel application which retrieves video metadata from a web service in JSON format. The retrieved JSON data contain video assets' original upload time in milliseconds since Epoch. For instance, a video file was uploaded on "02/28/2013 20:41:44" (1362112904015 Epoch in milliseconds), the retrieved JSON data would look like:
I filed a bug on this last week as Brightcoves's JSON has this issue. A fix of some kind is in the works, although it might not be for a while. In the meantime, Regex to fix the issue or switching to XML are your best bets, some APIs like Brightcove have this as an option, appending &output=mrss or &output=rss to your url will give you an xml formatted string you can work with.