Is adaptive streaming (live http streaming) required of iphone apps that play video?

We are creating a video intensive app and want to be sure that adaptive streaming is required (given that we need to write an automated transcoding and segmentation system to support t开发者_开发技巧his). Does anyone know if the YouTube app is using adaptive streaming?

Yes. From the documentation you can read:

Important: iPhone and iPad apps that send large amounts of audio or video data over cellular networks are required to use HTTP Live Streaming.

I don't think the YouTube app uses adaptive streaming. It definatly doesn't look like it does on the iPad. But it does have wifi and 3G modes but I don't think it does fully adaptive streaming.

For your app if its allowed to stream over 3G then yes you are required to make it adaptive. But if you just are making an app for wifi use then you don't.