How much disk space is available to an application on iPhone?

I am planning to store videos inside my app's Documents folder开发者_StackOverflow中文版, so I need to know how much memory is available to an application. Is there is any limit on how much can I put inside my application's Documents folder? Would that affect performance or reduce disk space available to my application for running?

Theoretically, your only storage limit is the device's memory. According to Ray Wenderlich the only limit is 2GB per file. I can't verify offhand, but Ray usually knows what he is talking about. I'd trust that.