Export video iPhone SDK
<p>I want to change the FPS of a movie made with a iPhone to a higher FPS an export it.
How can i do this?</p>

<p>I found this code, but how can i use it in changing a video made by the iPhone?</p>

<pre><code>self.playerItem = [[AVPlayerItem alloc] initWithAsset:anAsset];


AVMutableVideoComposition *composition = [AVMutableVideoComposition videoComposition];//self.playerItem.videoComposition;
composition.frameDuration = CMTimeMake(1, 25); // 25 fps
composition.renderSize = CGSizeMake(1024, 768);

self.playerItem.videoComposition = composition;
</code></pre>
