I'm writing my first iPad app that plays a video on a portion of the screen. My problem is that if the user changes to another view while the video is playing, the audio keeps playing in the background. I assume I have to add something to the "viewDidUnload" method but I'm not sure what to do. Any ideas? Thanks for any info.
You can try adding
[myMoviePlayer pause]; // assume myMoviePlayer is an instance variable
[myMoviePlayer stop];
myMoviePlayer = nil;
to your viewWillDisappear method.
Related
I am using MPMoviePlayerViewController for playing the sound and video. I am streaming the song from the url. It is working fine.But the problem is, MPMoviePlayerViewController is not showing the time progress for the song I playing. That bar is disabled. How to make the time progress bar active? I have following code to play the song.
mediaPlayerController = [[MPMoviePlayerViewController alloc] initWithContentURL:songUrl];
[self presentModalViewController:mediaPlayerController animated:YES];
[[mediaPlayerController moviePlayer] play];
If you want to show the current progress time on your own custom way, you can show it by using the currentPlaybackTime property in the MPMediaPlayback protocol gives you that info.
U use AVPlayer for playing live streaming. Refer this link.
Also refer StitchedStreamPlayer link sample code by apple.
Set controlStyle for mediaPlayerController:
[mediaPlayerController moviePlayer].controlStyle = MPMovieControlStyleFullscreen
I have an iPhone app where I load an UIImagePickerController onto a UIViewController. I then have a custom view on top of the camera. Now when the user takes a photo it is loaded onto a UIImageView which presents it to the user asking if you want to use that photo or take another (removing the image from the UIImageView). This works perfectly.
Now If the user has just recorded a video I wanted to take a snapshot preview somewhere in the video and present it as a static image in the same UIImageView. I do this with the following code:
MPMoviePlayerController *videoPlayer = [[MPMoviePlayerController alloc] init];
videoPlayer.shouldAutoplay = NO;
[videoPlayer setContentURL:[info valueForKey:UIImagePickerControllerMediaURL]];
UIImage *videoScreenShot = [videoPlayer thumbnailImageAtTime:(videoPlayer.duration/2.0) timeOption:MPMovieTimeOptionNearestKeyFrame];
photoPreview.image = videoScreenShot;
[videoPlayer release]
This works as intended. The problem is if I want to take another video. When I call:
[videoPlayer setContentURL:[info valueForKey:UIImagePickerControllerMediaURL]];
The camera shutter closes and the camera is seemingly dismissed. Trying to take a picture or recording video gives me:
UIImagePickerController: ignoring request to take picture; camera is not yet ready.
UIImagePickerController: ignoring request to start video capture; camera is not yet ready.
I've tried calling the following after, which has no effect:
myImagePicker.mediaTypes = [UIImagePickerController availableMediaTypesForSourceType: UIImagePickerControllerSourceTypeCamera];
[myImagePicker setSourceType:UIImagePickerControllerSourceTypeCamera];
I tried adding the UIImagePickerController to the UIIViewController again, which caused some fantastic freeze-ups.
Finally I tried commenting out the UIViewController's [super didReceivedMemoryWarning] line of didReceivedMemoryWarning. Which also had no effect.
I'm guessing MPMoviePlayerController takes over something UIImagePicker also needs. How do I give it back?
I would suggest setting your MPMoviePlayerController to nil before showing the UIImagePickerController, or maybe taking its view out of the interface temporarily. Both of these contain a movie player view, but there can be only one movie player view at a time in your application's interface. Thus they can interfere with each other, and that might be what's happening to you.
I have a table view that has a list videos. When I click on one it uses MPMoviePlayerController to play the corresponding video. I cannot figure out how to have the player return to the list-view when the video finishes or I click on the done button.
I read the documentation and they said there was a
MPMoviePlayerPlaybackDidFinishNotification.
I figure I could have code that would go off when the notification was sent to go back to my list-view, but:
I do not understand notifications. Are they like using a delegate for a call back?
After I detected the notification, how would I tell the player to go away?
If you use the MPMoviePlayerViewController then the approach is something like:
MPMoviePlayerViewController *player = [[MPMoviePlayerViewController alloc] initWithContentUrl:url];
[myViewController presentMoviePlayerViewControllerAnimated:player];
You don't need to worry about the notification then. Once the user clicks done the movie player will go away.
I have any number of thumbnail images that, when tapped, will play a different video (fullscreen). I have never been clear on whether I should keep one MPMoviePlayerController object in my view controller and have it play whichever url according to the thumbnail that was tapped, or create a new MPMoviePlayerController each time. What is the best practice?
I am also having problems where tapping on different thumbs crashes the app, I believe because the MPMoviePlayerController tries to stream a video while it is already trying to stream. There seems to be no way to cancel a MPMoviePlayerController and clear out what it was doing, then start loading a new video.
Here's how I create it:
MPMoviePlayerController* moviePlayer = [[MPMoviePlayerController alloc] init];
self.player = moviePlayer;
[moviePlayer release];
Then to play a video I do this:
//would like to do something like this first - [self.player clear];
self.player.contentURL = someURL;
[self.view addSubview:player.view];
[self.player prepareToPlay];
[self.player play];
Any advice is welcome... thanks.
When you are changing the video in an MPMovieplayerController,then you can remove the mpmoviecontrollerplayer view from super view using removeFromSuperView and again add it's subview to the super view initializing it with new URL.
No need to create new object every time.
For some reason, the expand button the arrow points to in the screenshot below causes the view controller that initiated video playback to animate back over top of the video, but without stopping video playback which means you can still hear the audio even though the video is no longer visible. I've tried other movie control styles, but there are other problems with those (for example, no controls causes the player to play the entire video before dismissing, i.e. no 'Done' button).
Here is the code that initiates the video playback:
player = [[MPMoviePlayerViewController alloc] initWithContentURL:movieURL];
[player setModalTransitionStyle:UIModalTransitionStyleCrossDissolve];
[[self navigationController] presentModalViewController:player animated:YES];
[[player moviePlayer] play];
Any ideas/suggestions as to how I can either disable that button or receive its notification so I can respond accordingly?
Thanks.
I can't find a solution to this, but I did find a workaround. I simply call [player stop]; in my -viewDidLoad of the calling view controller. The outcome won't be what the user expects when they press that button, but it's better than allowing the video to continue to play when they press it.