AVFoundation Alternative

In my app i insert an edited audio track over a video track and save the result in a single file (by an AVMutableComposition first and then by an exportAsynchronouslyWithCompletionHandler). I have used AVFounda开发者_JAVA技巧tion. Is there another framework that i can use to reach the same result?

I post this answer here and I think there isn't other solution. I tried FFMPEG but AVFoundation is better.