AVPlayer change volume, vertical slider

Question

Is there a way to change the volume on avplayer using a vertical slider, MPVolumeView is just horizontal and it doesn't seems to exist a way to do that.
I could have used a custom slider: on iOS7 we have the volume property to interact with, on iOS6 it seems that the only solution is the AudioMix Trick , but the last one seems to work only with "file" tracks not streaming content (I need to use them).
Has someone came up with an idea?

Answer 1

This worked for me (iPhone 5, iOS 8.3):

MPVolumeView *volumeView = [[MPVolumeView alloc] initWithFrame:CGRectMake(225, 270, 160, 30)];

CGAffineTransform sliderRotation = CGAffineTransformIdentity;
sliderRotation = CGAffineTransformRotate(sliderRotation,-(M_PI / 2));
volumeView.transform = sliderRotation;

[self.view addSubview:volumeView];

Answer 2

This worked for me on IOS 8.4 subclassing MPVolumeView and placing an UIView in a XIB file with the position I wanted.

First subclass MPVolumeView .

@implementation UIPlayerVolume

- (void)awakeFromNib {
    [super awakeFromNib];

    CGRect originalFrame = self.frame;

    self.translatesAutoresizingMaskIntoConstraints = YES;

    CGAffineTransform sliderRotation = CGAffineTransformIdentity;
    sliderRotation = CGAffineTransformRotate(sliderRotation,-(M_PI / 2));
    self.transform = sliderRotation;

    self.frame = originalFrame;
}

@end