How to Mute/Unmute Audio When Playing Video Using Mpmovieplayercontroller

How to mute/unmute audio when playing video using MPMoviePlayerController?

After speaking to an Apple technician it turns out that it's not possible to control or mute the audio using MPMoviePlayerController.

Instead you have to create your own controller using AVFoundations AVPlayer class.

Once you're using that it's a matter of creating a custom audio mix and setting the volume level. It actually works very well.

Sample code:

    AVURLAsset * asset = [AVURLAsset URLAssetWithURL:[self localMovieURL] options:nil];
    NSArray *audioTracks = [asset tracksWithMediaType:AVMediaTypeAudio];

    // Mute all the audio tracks
    NSMutableArray * allAudioParams = [NSMutableArray array];
    for (AVAssetTrack *track in audioTracks) {
            AVMutableAudioMixInputParameters *audioInputParams =[AVMutableAudioMixInputParameters audioMixInputParameters];
            [audioInputParams setVolume:0.0 atTime:kCMTimeZero ];
            [audioInputParams setTrackID:[track trackID]];
            [allAudioParams addObject:audioInputParams];
    }
    AVMutableAudioMix * audioZeroMix = [AVMutableAudioMix audioMix];
    [audioZeroMix setInputParameters:allAudioParams];

    // Create a player item
    AVPlayerItem *playerItem = [AVPlayerItem playerItemWithAsset:asset];
    [playerItem setAudioMix:audioZeroMix]; // Mute the player item

    // Create a new Player, and set the player to use the player item
    // with the muted audio mix
    AVPlayer *player = [AVPlayer playerWithPlayerItem:playerItem];

    self.mPlayer = player;

    [mPlayer play];

I've written an MPMoviePlayerController replacement class that adds support for volume level. I will upload the to github shortly and add the link in this post.

How to mute audio using MPMoviePlayerController?

Its not possible to mute your audio player by using MPMoviePlayerController. If you want to mute your audio player you should add AVFoundation framework. Try this code

AVURLAsset * asset = [AVURLAsset URLAssetWithURL:[self localMovieURL] options:nil];
NSArray *audioTracks = [asset tracksWithMediaType:AVMediaTypeAudio];

// Mute all the audio tracks
NSMutableArray * allAudioParams = [NSMutableArray array];
for (AVAssetTrack *track in audioTracks) {
        AVMutableAudioMixInputParameters *audioInputParams =[AVMutableAudioMixInputParameters audioMixInputParameters];
        [audioInputParams setVolume:0.0 atTime:kCMTimeZero ];
        [audioInputParams setTrackID:[track trackID]];
        [allAudioParams addObject:audioInputParams];
}
AVMutableAudioMix * audioZeroMix = [AVMutableAudioMix audioMix];
[audioZeroMix setInputParameters:allAudioParams];

// Create a player item
AVPlayerItem *playerItem = [AVPlayerItem playerItemWithAsset:asset];
[playerItem setAudioMix:audioZeroMix]; // Mute the player item

// Create a new Player, and set the player to use the player item
// with the muted audio mix
AVPlayer *player = [AVPlayer playerWithPlayerItem:playerItem];

self.mPlayer = player;

[mPlayer play];

Disable Audio (and interruption) with MPMoviePlayerController using Swift

So I found this answer.

This is my Swift code that I ended up going with. I then used an AVPlayerLayer to add to the view as a sublayer, which works perfectly.

Thanks to the OP who managed to get a hold of an Apple technician and provided the original Objective-C code.

The only problems I'm facing now is that it:

1) Interrupts current music playback, whether it's from Music, Spotify, etc.

2) Video stops playing if I close the app and open it up again.

override func viewDidAppear(animated: Bool)  {
    let filePath = NSBundle.mainBundle().pathForResource("musicvideo", ofType: "mp4")

    var asset: AVURLAsset?
    asset = AVURLAsset.URLAssetWithURL(NSURL.fileURLWithPath(filePath), options: nil)
    var audioTracks = NSArray()
    audioTracks = asset!.tracksWithMediaType(AVMediaTypeAudio)

    // Mute all the audio tracks
    let allAudioParams = NSMutableArray()
    for track: AnyObject in audioTracks {
        // AVAssetTrack
        let audioInputParams = AVMutableAudioMixInputParameters()
        audioInputParams.setVolume(0.0, atTime: kCMTimeZero)
        audioInputParams.trackID = track.trackID
        allAudioParams.addObject(audioInputParams)
    }

    let audioZeroMix = AVMutableAudioMix()
    audioZeroMix.inputParameters = allAudioParams

    // Create a player item
    let playerItem = AVPlayerItem(asset: asset)
    playerItem.audioMix = audioZeroMix

    // Create a new Player, and set the player to use the player item
    // with the muted audio mix
    let player = AVPlayer.playerWithPlayerItem(playerItem) as AVPlayer

    player.play()

    let layer = AVPlayerLayer(player: player)
    player.actionAtItemEnd = .None

    layer.frame = self.view.bounds
    layer.videoGravity = AVLayerVideoGravityResizeAspectFill
    self.view.layer.addSublayer(layer)
}

MPMoviePlayerController: How to turn off sound during requestThumbnailImagesAtTimes:timeOption:

Just add this line after creating your player:

self.player.shouldAutoplay = NO;

AudioContext Mute sound when setValueAtTime foreach still working

I "mute" sound by disconnect and connect:

muteAudioMorse(muteValue) {
    if(this.audioCtx.state === 'running') {
        if(muteValue === 0) this.gainNode.disconnect(this.audioCtx.destination)
        else if(muteValue === 1) this.gainNode.connect(this.audioCtx.destination)
    }
}

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