I'm creating a video player view where I download URLs from the Internet to play using an AVQueuePlayer. It generally works pretty fine except sometimes I'll get the play icon slashed out and the AVQueuePlayer breaks.
I'm not sure what triggers this broken AVQueuePlayer state.
I create new AVQueuePlayers on viewappear and on viewdisappear I run these lines on the player
ViewAppear
if (self.player == nil){
self.player = AVQueuePlayer()
}
ViewDisappear
self.player.pause()
self.player.replaceCurrentItemWithPlayerItem(nil)
The main thing I'm curious of are there any potential reasons why a AVQueuePlayer will sometimes work and sometimes not? (It'll stop working after I trigger viewAppear, viewDisappear, viewAppear, etc. a few times)
Checking the network requests, when I do get the play button of death, no videos are streamed at all (0 network activity).
Potential reasons:
1)I'm thinking it might have something to do with the number of AVPlayers instantiated and I'm just not removing them correctly?
2) I also build the app on my phone a lot and close it while running it. Maybe this breaks the phone's avplayer over time?
Any directions for this type of behavior are appreciated.
EDIT: Interestingly enough, once in a while, it breaks so hard that I break every single app that plays video. Snapchat and Youtube don't work either after a certain point. I'm not sure how I broke every single player.
UPDATE: Getting this generic error for BOTH the AVPlayer & AVPlayerItem
Optional(Error Domain=AVFoundationErrorDomain Code=-11819 "Cannot Complete Action" UserInfo={NSLocalizedDescription=Cannot Complete Action, NSLocalizedRecoverySuggestion=Try again later.})
I have a MPMoviePlayerController, in which I open a movie stream located on Amazon S3. Now, I am calling [[self moviePlayerController] prepareToPlay]; once the stream URL is set so that the user can see the first frame and the movie is ready to play whenever the user wants to. This is done in viewDidLoad.
However, when I do a "prepareToPlay", it actually goes and keep downloading the movie stream. I don't want that because it uses a lot of bandwidth for nothing on my servers if the user doesn't actually play it fully. Is there a way to just load the first second or so?
I am not sure what the issue is but when i try to play MP4 videos hosted on akamai server, the MPMoviePlayerViewController fails to play it. I added notifications for monitoring playback state and it quickly switches from playing to stopped. If i print the error then i get the following:
MPMoviePlayerPlaybackDidFinishReasonUserInfoKey = 1;
error = "Error Domain=MediaPlayerErrorDomain Code=-11850 \"Operation Stopped\" UserInfo=0x1e5a6750 {NSLocalizedDescription=Operation Stopped}";
Above message is not very helpful in understanding what the actual issue might be. It is important to note that i am able to play the same URL in Safari and my app is able to play youtube videos without any issues.
The issue was pretty trivial - I was passing in an incorrect streaming URL :(. Thanks.
I have been recording video successfully in my app using AVAssetWriter for long time but today I start to see some strange warning comes when I stop recording,
Scenario:
I record the video & can record again the video multiple times [NO WARNINGS]
I play the video in MPMoviePlayerController [NO WARNINGS]
I record the video after playing the video and once I click stop recording I get the warning
Warning:
MP AVAudioSessionDelegateMediaPlayerOnly end interruption. Interruptor <RecorderServer> category <(null)> resumable <0>, _state = 0
Does anyone know what might be the issue or had similar issue like I have?
It feels like I have solved my problem, although it was not a big issue just a minor mistake which I did,when I play video in MPMoviePlayerController , after I finish playing video using the notification, i was not releasing the player object, I thought it would be enough to unregister from the notification but it helped when i set the self.player=nil;
Seems that your audio session category is set to kAudioSessionCategory_MediaPlayback when you play which is ok. Change it to a suitable category for recording.
Look the different available categories here http://developer.apple.com/library/ios/documentation/Audio/Conceptual/AudioSessionProgrammingGuide/AudioSessionCategories/AudioSessionCategories.html#//apple_ref/doc/uid/TP40007875-CH4-SW1
I'm setting up an AVAudioSession when the app launches and setting the delegate to the appDelegate. Everything seems to be working (playback, etc) except that beginInterruption on the delegate is not being called when the phone receives a call. When the call ends endInterruption is being called though.
The only thought I have is that the audio player code I'm using used to be based on AVAudioPlayer, but is now using AVPlayer. The callbacks for the AVAudioPlayer delegate for handling interrupts are still in there, but it seems odd that they would conflict in any way.
Looking at the header, in iOS6, it looks like AVAudioSessionDelegate is now deprecated.
Use AVAudioSessionInterruptionNotification instead in iOS6.
Update: That didn't work. I think there's a bug in the framework.
Yes, in my experience, beginInterruption, nor the newly documented AVAudioSessionInterruptionNotification work properly. What I had to do was track the status of the player using a local flag, then handle the endInterruption:withFlags: method in order to track recovery from interruptions.
With iOS 6, the resuming from an interruption will at least keep your AudioPlayer in the right place, so there was no need for me to store the last known play time of my AVAudioPlayer, I simply had to hit play.
Here's the solution that I came up with. It seems like iOS 6 kills your audio with a Media Reset if an AVPlayer stays resident too long. What ends up happening, is the AVPlayer plays, but no sound comes out. The rate on the AVPlayer is 1, but there's absolutely no sound. To add pain to the situation, there's no error on either the AVAudioSession setActive, nor the AVPlayer itself that indicates that there's a problem.
Add to the fact that you can't depend on appWillResignActive, because your app may already be in the background if you're depending on remote control gestures at all.
The final solution I implemented was to add a periodic observer on the AVPlayer, and record the last known time. When I receive the event that I've been given back control, I create a new AVPlayer, load it with the AVPlayerItem, and seekToTime to the proper time.
It's quite an annoying workaround, but at least it works, and avoids the periodic crashes that were happening.
I can confirm that using the C api, the interruption method is also not called when the interruption begins; only when it ends
(AudioSessionInitialize (nil, nil, interruptionListenerCallback, (__bridge void *)(self));
I've also filed a bug report with apple for the issue.
Edit: This is fixed in iOS 6.1 (but not iOS 6.0.1)
Just call:
[[AVAudioSession sharedInstance] setDelegate: self];
I just checked on my iPhone 5 (running iOS 6.0) by setting a breakpoint in the AudioSessionInterruptionListener callback function that was declared in AudioSessionInitialize(), and this interrupt callback does, in fact, get called when the app has an active audio session and audio unit and is interrupted with an incoming phone call (Xcode shows the app stopped at the breakpoint at the beginning of the interruption, which I then continue from).
I have the app then stop its audio unit and de-activate its audio session. Then, on the end interruption callback, the app re-activates the audio session and restarts the audio unit without problems (the app is recording audio properly afterwards).
I built a brand new audio streaming (AVPlayer) application atop iOS 6.0.x and found the same problem.
Delegates are now deprecated and we have to use notifications, that's great, however here's my findings:
During an incoming phone call I get only AVAudioSessionInterruptionTypeEnded in my handler, along with AVAudioSessionInterruptionOptionShouldResume. Audio session gets suspended automatically (audio fades) and I just need to resume playback of AVPlayer.
However when attempting to launch a game, such as CSR Racing, I oddly get the dreaded AVAudioSessionInterruptionTypeBegan but no sign when my application can resume playback, not even killing the game.
Now, this may depend on other factors, such as my audio category (in my case AVAudioSessionCategoryPlayback) and the mixing settings of both applications (kAudioSessionProperty_OverrideCategoryMixWithOthers), I'm not sure, but definitely I see something out of place.
Hopefully others reported that on 6.1beta this is fixed and I yet have to upgrade, so we'll see.