ExtAudioFileOpenURL failed to open a mov file

ExtAudioFileRef audioFile = NULL;

OSStatus err = noErr;

if(err == noErr)

{

err = ExtAudioFileOpenURL((__bridge CFURLRef)url, &audioFile);

if(err)

{

NSLog(@"ExtAudioFileOpenURL: %ld", (long)err);

}

}
ERROR:
EXCEPTION (1954115647): "open audio file"
ExtAudioFileOpenURL: 1954115647