Remove audio from video

I pick a movie with the image picker . The problem is that i don't know how to remove the audio from the asset . Any idea? This is the code that i am using to retrieve the movie :

- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info {

    NSURL *url =  [info objectForKey:UIImagePickerControllerMediaURL];
    if ([[NSFileManager defaultManager]]) {
        [[NSFileManager defaultManager] error:nil];
        [[NSFileManager defaultManager]removeItemAtPath:movie.convertedID error:nil];

    [self dismissModalViewControllerAnimated:YES];
    dispatch_async(dispatch_get_main_queue(), ^{
        [self saveNewMovieAt:url];



better way to Mute MPMoviePlayerController while playing instaed of trying to remove the audio from the asset :)

As per my knowledge, there is no other way to do it..

[[MPMusicPlayerController applicationMusicPlayer] setVolume:0];


        [myMPMoviePlayerController setVolume:0];

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