With its world-class camera and great video-editing apps, the iPhone is a mobile video powerhouse (some feature films from major directors have even been shot on it). But what good is that if you don't have the memory to store the video? The question for iPhone owners who shoot a lot of video needs to ask: How much video can you shoot on your iPhone?

The answer isn’t entirely clear-cut. Many factors affect the answer, such as how much total storage space your device has, how much other data is on your phone, and what resolution video you record. To find the answer, let’s look at how each of these issues affects how much video you can record on your iPhone.

The most important factor in how much video you can record on your iPhone is how much space you have available to record that video. If you have 100MB of free storage, that's your limit for recording video. Every user has a different amount of storage available (and, in case you're wondering, you can't expand an iPhone's memory).

It’s impossible to say exactly how much storage a user has available without seeing their device. As such, there’s no single answer to the question of how much video a user can record; it’s different for everyone. But let’s make some reasonable assumptions and work from there.