Setting AVMutableComposition's frameDuration

Question

I\'m playing with the AVEditDemo project, from Apple\'s WWDC 2010 sample pack, and I\'m trying to change the frame rate of the exported video. The

Answer 1

It seems that the AVAssetExportSession preset takes precedence over the AVVideoComposition frameDuration. I've opened a bug report:

http://openradar.appspot.com/11127156