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    <p>Since I encountered this issue and the previous answer is not complete (doesn't cover live stream case) - here is my improvement on top of it:</p> <pre><code>if ([keyPath isEqual:@"tracks"]) { BOOL hasVideoTrack = NO; for (AVPlayerItemTrack* track in [[yourPlayer.currentItem] tracks]) { if ([track.assetTrack.mediaType isEqual:AVMediaTypeVideo]) { hasVideoTrack = YES; break; } } if (hasVideoTrack) { // Remove audio only view } else { // Show audio only view } } </code></pre> <p> Do note - this however will only let you show a local Audio only screen. When playing a live stream - the Artwork for the audio only is supposed to come from the stream, so my code is more towards this:</p> <pre><code>if ([keyPath isEqualToString:@"timedMetadata"] == YES){ for (AVMetadataItem *metadata in self.player.currentItem.timedMetadata) { if ([[metadata commonKey] isEqualToString:@"artwork"]) { UIImage *overlayImage = [UIImage imageWithData:metadata.dataValue]; UIImageView *overlayImageView = [[UIImageView alloc] initWithImage:overlayImage]; overlayImageView.contentMode = UIViewContentModeScaleAspectFit; // If an audio only slide is already there, make it disappear. [self hideAudioOnlySlide]; self.audioOnlyView = overlayImageView; [self showAudioOnlySlide]; self.audioOnlyView.size = _playerView.size; break; } } }else if ([keyPath isEqualToString:@"tracks"] == YES){ NSArray *tracks = self.player.currentItem.tracks; if ([self.player.currentItem hasVideoTracks] == NO) { // Check if there is timed metadata with artwork that indicates audio only is handled at the stream level. BOOL hasAudioOnlyFromStream = NO; for (AVMetadataItem *metadata in self.player.currentItem.timedMetadata) { if ([[metadata commonKey] isEqualToString:@"artwork"]) { hasAudioOnlyFromStream = YES; break; } } // If we don't have audio only slide from the stream - carry on to show audio only slide. //Otherwise - this is handled by the timed metadata check for artwork. if (hasAudioOnlyFromStream == NO) { [self showAudioOnlySlide]; } } else { [self hideAudioOnlySlide]; } } </code></pre> <p>Add observation code:</p> <pre><code>[item addObserver:self forKeyPath:@"timedMetadata" options:0 context:NULL]; [item addObserver:self forKeyPath:@"tracks" options:0 context:NULL]; </code></pre> <p>Remove observation code:</p> <pre><code>@try { [item removeObserver:self forKeyPath:@"timedMetadata"]; [item removeObserver:self forKeyPath:@"tracks"]; } </code></pre> <p>hasVideoTracks code (Inside a category over AVPlayerItem):</p> <pre><code>- (BOOL)hasVideoTracks{ BOOL hasVideoTracks = NO; for (AVPlayerItemTrack* track in [self tracks]){ if ([track.assetTrack.mediaType isEqual:AVMediaTypeVideo]){ hasVideoTracks = YES; break; } } return hasVideoTracks; } </code></pre> <p>Note:</p> <ol> <li>DON'T use presentationSize to detect audio only - in iOS 7 it no longer becomes CGSizeZero when moving to audio only - but gives some funky sizes instead. It's not a reliable method.</li> <li>Show/Hide audioOnlySlide is pretty straight forward and should contain your implementation.</li> </ol>
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