SVS (Short Video Service) is now available on the iPhone thanks to 12seconds.tv, a video version of Twitter.

12mail, the second iPhone app from 12seconds.tv allows you to record a video, up to 12 seconds, and send it off to one of your Twitter or Facebook contacts. With push notification, the recipient is alerted just like they would with an SMS or MMS. You don’t need a 12seconds account so long as you’re connected with Twitter and Facebook.

Obviously, to be able to record the video you need an iPhone 3GS, but not all is lost for those of us who haven’t upgraded yet as we can still record 12 seconds of audio as an alternative.

There is a small caution though. When you send an SVS to one of your Twitter contacts, it shows up as a direct message on Twitter and as a private message in the iPhone app. Unfortunately however, when you send an SVS to a Facebook contact, it posts it in public on that person’s Facebook Wall and shows up in the iPhone app. So, be warned, if you want it private, keep it to Twitter contacts.