I am trying to process videos in some way:
I look up on t
There is a WWDC 2010 video called Editing Media with AV Foundation which may be useful to you and is available through the Developer Portal.
The AVEditDemo application is included in the WWDC 2010 Sample Code because it goes with the video. This should contain the AVEditDemo Application which goes with the Video. Unfortunately you need to download all the WWDC 2010 Sample Code to get it (232.6mb). You can get the entire download of all the code here: http://connect.apple.com/cgi-bin/WebObjects/MemberSite.woa/wa/getSoftware?code=y&source=x&bundleID=20645