I am doing an iOS application with a video player in it. I have to change my video URL each time user switch it view angle. But when I am switching to a new URL my UI gets freezed for some time. Following is my code for switching video URL function.
// Create the AVPlayer using the playeritem
m_pMoviePlayer = [AVPlayer playerWithURL:[NSURL URLWithString:pUrl]];
NSError *_error = nil;
[[AVAudioSession sharedInstance] setCategory: AVAudioSessionCategoryPlayback error: &_error];
m_pMoviePlayer.allowsExternalPlayback = NO;
// You can play/pause using the AVPlayer object
[m_pMoviePlayer play];
[self registerMoviePlayerObservers];
Thanks in advance.
Related
I am using UIImagePickerController to record a video. and am using AVPlayer to play a video. and adding AVPlayerLayer to UIImagePickerController's cameraOverlayView so that i can see video while recording.
My requirement is
I need to watch video while recording video using UIImagePickerController
using headset i need to listen audio from playing video
need to record my voice to recording video
only my voice should be recorded but not playing video's audio.
every thing working but 4. audio from playing video also mix with my voice. how to handle this case? My final goal is
Out put for the playing video is headset
Input for the recording is headset's mic
Please help me to get this done.
Your requirement is interesting. So you need to play and record at the same time, right?
So that, you will need to initialize audio session with the category AVAudioSessionCategoryPlayAndRecord.
[[AVAudioSession sharedInstance] setCategory:AVAudioSessionCategoryPlayAndRecord error:&error];
Because you are using UIImagePickerController to record so you don't have much control to your speaker and your mic. So test and see if it works.
In case you still have problem, I suggest you to use AVCaptureSession to record video without audio. Look at this example how to use it record-video-with-avcapturesession-2.
UPDATE: In my VOIP application, I use AVAudioUnit to record while playing back. So I think the only way is record video and audio separately and then use AVComposition to compose its to a single movie. Using AVCaptureSession to record video only and use EZAudio to record audio. The EZAudio use AVAudioUnit to record so that it should work. You can test it by record audio while playing a movie and see if it works. I hope it will help
UPDATE: I tested and it only work if you use headphone or select microphone back.
Here is the tested code:
NSString *moviePath = [[NSBundle mainBundle] pathForResource:#"videoviewdemo" ofType:#"mp4"];
NSURL *url = [NSURL fileURLWithPath:moviePath];
// You may find a test stream at <http://devimages.apple.com/iphone/samples/bipbop/bipbopall.m3u8>.
AVPlayerItem *playerItem = [AVPlayerItem playerItemWithURL:url];
AVPlayer *player = [AVPlayer playerWithPlayerItem:playerItem];
AVPlayerLayer *layer = [[AVPlayerLayer alloc] init];
[layer setPlayer:player];
[layer setFrame:CGRectMake(0, 0, 100, 100)];
[self.view.layer addSublayer:layer];
[player play];
dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(1 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{
//
// Setup the AVAudioSession. EZMicrophone will not work properly on iOS
// if you don't do this!
//
AVAudioSession *session = [AVAudioSession sharedInstance];
NSError *error;
[session setCategory:AVAudioSessionCategoryPlayAndRecord error:&error];
if (error)
{
NSLog(#"Error setting up audio session category: %#", error.localizedDescription);
}
[session setActive:YES error:&error];
if (error)
{
NSLog(#"Error setting up audio session active: %#", error.localizedDescription);
}
//
// Customizing the audio plot's look
//
// Background color
self.audioPlot.backgroundColor = [UIColor colorWithRed:0.984 green:0.471 blue:0.525 alpha:1.0];
// Waveform color
self.audioPlot.color = [UIColor colorWithRed:1.0 green:1.0 blue:1.0 alpha:1.0];
// Plot type
self.audioPlot.plotType = EZPlotTypeBuffer;
//
// Create the microphone
//
self.microphone = [EZMicrophone microphoneWithDelegate:self];
//
// Set up the microphone input UIPickerView items to select
// between different microphone inputs. Here what we're doing behind the hood
// is enumerating the available inputs provided by the AVAudioSession.
//
self.inputs = [EZAudioDevice inputDevices];
self.microphoneInputPickerView.dataSource = self;
self.microphoneInputPickerView.delegate = self;
//
// Start the microphone
//
[self.microphone startFetchingAudio];
self.microphoneTextLabel.text = #"Microphone On";
[[AVAudioSession sharedInstance] overrideOutputAudioPort:AVAudioSessionPortOverrideSpeaker error:nil];
});
Take a look at PBJVision library. It allows you to record video while you are watching the preview, and at the end, you can do whatever you want with audio and video footage.
I am getting video url of youtube from this API https://www.googleapis.com/youtube/v3/videos?id=ynMk2EwRi4Q&part=player&key=***************************.
But the problem is i am getting vimeo video which will give the message ‘This video contains content from VEVO.It is restricted from playback on certain sites.Watch on Youtube’.I download HCYoutubeParser-master where it will convert where it will play youtube videos.But it is unable to play Vimeo Videos.
This is my code:
mp1 = [[MPMoviePlayerController alloc]initWithContentURL:_urlToLoad];
[mp1 prepareToPlay];
self.mc3=mp1;
mp1.view.frame = self.view.bounds; //Set the size
[self.view addSubview:mp1.view]; //Show the view
[mp1 play]; //Start playing
AVAudioSession *session = [AVAudioSession sharedInstance];
NSError *setCategoryError = nil;
if (![session setCategory:AVAudioSessionCategoryPlayback
withOptions:AVAudioSessionCategoryOptionMixWithOthers
error:&setCategoryError]) {
// handle error
}
So I have this app where I play videos and when you exit the app I would like the user to continue to listen to the audio of the video. I use MPMoviePlayerController to play the video and it works in the app perfectly fine. I also setup AVAudioSession up before I play the video and I get no error.
NSError *audioSessionError;
NSError *activationError;
AVAudioSession *audioSession = [AVAudioSession sharedInstance];
[audioSession setCategory:AVAudioSessionCategoryPlayback error:&audioSessionError];
[audioSession setActive:YES error:&activationError];
I also set in plist background modes audio. But the video with the audio both stop playing when you close the app. I've also imported the AVFoundation framework.
Simply set Application does not run in background to NO in .plsit file
You need to make couple of changes in plist file.i.e.
1) Set Required background mode to App plays audio
2) set Application does not run in background to YES.
NSError *setCategoryErr = nil;
NSError *activationErr = nil;
[[AVAudioSession sharedInstance] setCategory: AVAudioSessionCategoryPlayback error:&setCategoryErr];
[[AVAudioSession sharedInstance] setActive:YES error:&activationErr];
Then, you need to write these much code in AppDelegate
Now, you can easily run audio while phone screen locks or goes in background.
This code worked for me, first you must to give your app permissions to keep playing music in the background (In your .plis), after that go to the wished class and implement this code, first the imports and the the method to play the music.
#import <MediaPlayer/MPNowPlayingInfoCenter.h>
#import <MediaPlayer/MPMediaItem.h>
#import <AVFoundation/AVFoundation.h>
---- o ----
-(void) playMusic{
[[AVAudioSession sharedInstance] setDelegate: self];
NSError *myErr;
// Initialize the AVAudioSession here.
if (![[AVAudioSession sharedInstance] setCategory:AVAudioSessionCategoryPlayback error:&myErr]) {
// Handle the error here.
NSLog(#"Audio Session error %#, %#", myErr, [myErr userInfo]);
}else{
// Since there were no errors initializing the session, we'll allow begin receiving remote control events
[[UIApplication sharedApplication] beginReceivingRemoteControlEvents];
}
//initialize our audio player
audioPlayer = [[MPMoviePlayerController alloc] initWithContentURL:[NSURL URLWithString:#"http://www.cocoanetics.com/files/Cocoanetics_031.mp3"]];
[audioPlayer setShouldAutoplay:NO];
[audioPlayer setControlStyle: MPMovieControlStyleEmbedded];
audioPlayer.view.hidden = YES;
[audioPlayer prepareToPlay];
[audioPlayer play];
}//end playmusic
You need to turn on Background Modes in capabilities.
I have an app mostly based around Core Bluetooth.
When something specific happens, the app is woken up using Core Bluetooth background modes and it fires off an alarm, however I can't get the alarm working when the app is not in the foreground.
I have an Alarm Singleton class which initialises AVAudioPlayer like this:
NSURL *url = [NSURL fileURLWithPath:[[NSBundle mainBundle]
pathForResource:soundName
ofType:#"caf"]];
self.player = [[AVAudioPlayer alloc] initWithContentsOfURL:url error:nil];
[[AVAudioSession sharedInstance] setCategory:AVAudioSessionCategoryPlayback error:nil];
[[AVAudioSession sharedInstance] setActive: YES error: nil];
[self.player prepareToPlay];
self.player.numberOfLoops = -1;
[self.player setVolume:1.0];
NSLog(#"%#", self.player);
This is the method that is called when my alarm code is called:
-(void)startAlert
{
NSLog(#"%s", __FUNCTION__);
playing = YES;
[self.player play];
NSLog(#"%i", self.player.playing);
if (vibrate) {
[self vibratePattern];
}
}
Now when the app is in the foreground, self.player.playing returns 1 however when the app is in the background self.player.playing returns 0. Why would this be?
All the code is being called, so the app is awake and functioning.
The vibrate works perfectly which uses AudioServicesPlaySystemSound(kSystemSoundID_Vibrate);
Any idea why this sound won't play?
Thanks
Apple has a nice Technical Q&A article about this in its documentation (see also Playing and Recording Background Audio).
I think one big thing missing is that you haven't activated the Audio Background Mode in the Xcode settings:
Maybe also adding [self.player prepareToPlay] in your alert method is helpful.
I have an App than also needs background audio but my App works with the App background mode "Voice over IP" as it needs to record sometimes. I play background audio telling the App singleton I need to play audio in background:
UIBackgroundTaskIdentifier newTaskId = UIBackgroundTaskInvalid;
if([thePlayer play]){
newTaskId = [[UIApplication sharedApplication] beginBackgroundTaskWithExpirationHandler:NULL];
}
EDIT: You must call [[UIApplication sharedApplication] beginBackgroundTaskWithExpirationHandler:NULL]; before your app goes to background. In my app, it is at the same time you start playing, in yours, if the player might be started in background, you should do:
- (void)applicationDidEnterBackground:(UIApplication *)application{
// You should retain newTaskId to check for background tasks and finish them
newTaskId = [[UIApplication sharedApplication] beginBackgroundTaskWithExpirationHandler:NULL];
}
Apple docs
Either enable audio support from the Background modes section of the Capabilities tab
Or enable this support by including the UIBackgroundModes key with the audio value in your app’s Info.plist file
I take it you have the audio background mode specified for the app. Even so, I'm not sure you can set an audio session to be active while in the background. You need to have activated it before going into the background. You may also need to play some silent audio to keep this active, but this is seems like bad practice (it may drain the battery). Looking at the docs for notifications there seems to be a way to have a local notification play an audio sample that's included in your bundle, which seems to be what you want to do, so maybe that's the way to go.
Try this :
[[AVAudioSession sharedInstance] setCategory:AVAudioSessionCategoryAmbient error:nil];
link
Try this http://www.sagorin.org/ios-playing-audio-in-background-audio/
You need to enable your app to handle audiosession interruptions (and ended interruptions) while in the background. Apps handle audio interruptions through notification center:
First, register your app with the notification center:
- (void) registerForMediaPlayerNotifications {
[notificationCenter addObserver : self
selector: #selector (handle_iPodLibraryChanged:)
name: MPMediaLibraryDidChangeNotification
object: musicPlayer];
[[MPMediaLibrary defaultMediaLibrary] beginGeneratingLibraryChangeNotifications];
}
Now save player state when interruption begins:
- (void) audioPlayerBeginInterruption: player {
NSLog (#"Interrupted. The system has paused audio playback.");
if (playing) {
playing = NO;
interruptedOnPlayback = YES;
}
}
And reactivate audio session and resume playback when interruption ends:
-(void) audioPlayerEndInterruption: player {
NSLog (#"Interruption ended. Resuming audio playback.");
[[AVAudioSession sharedInstance] setActive: YES error: nil];
if (interruptedOnPlayback) {
[appSoundPlayer prepareToPlay];
[appSoundPlayer play];
playing = YES;
interruptedOnPlayback = NO;
}
}
Here's Apple's sample code with full implementation of what you're trying to achieve:
https://developer.apple.com/library/ios/samplecode/AddMusic/Introduction/Intro.html#//apple_ref/doc/uid/DTS40008845
I was also facing the same problem, but i was only facing it only during initial time when i was trying to play a sound while app was in background, once the app comes in foreground and i play the sound once than it works in background also.
So as soon as app is launched/ login is successful in my case, i was running this code:
[self startRingcall];
dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(3.0f * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{
[self stopRingcall];
});
- (void)startRingcall
{
if( self.audioPlayer )
[self.audioPlayer stop];
NSURL* musicFile = [NSURL fileURLWithPath:[[[UILayer sharedInstance] getResourceBundle] pathForResource:#"meetcalling" ofType:#"caf"]];
NSError *error;
self.audioPlayer = [[AVAudioPlayer alloc] initWithContentsOfURL:musicFile error:&error];
[[AVAudioSession sharedInstance] setCategory:AVAudioSessionCategoryPlayback error:nil];
[[AVAudioSession sharedInstance] setActive: YES error: nil];
if (error != nil) {
NSLog(#"meetringer sound error -> %#",error.localizedDescription);
}
self.audioPlayer.volume = 0;
[self.audioPlayer play];
self.audioPlayer.numberOfLoops = 1;
}
- (void)stopRingcall
{
if( self.audioPlayer )
[self.audioPlayer stop];
self.audioPlayer = nil;
}
I have a problem with the AVPlayer playing in background mode, like a lot of people here and everywhere on the web. I've done what I think is supposed to work, but is still doesn't... I think my problem might be where I set and use my AudioSession and AVPlayer.
1) The "audio" key is in UIBackgroundModes of my Info.plist
2) AudioSession set like this in AppDelegate (initialised in didFinishLaunchingWithOptions):
AVAudioSession *audio = [[AVAudioSession alloc]init];
[audio setCategory:AVAudioSessionCategoryPlayback error:nil];
[audio setActive:YES error:nil];
3) I use an AVPlayer (not AVAudioPlayer) also implemented in AppDelegate. (initialised in didFinishLaunchingWithOptions, after the AudioSession), right after the AudioSession
// Load the array with the sample file
NSString *urlAddress = #"http://mystreamadress.mp3";
//Create a URL object.
self.urlStream = [NSURL URLWithString:urlAddress];
self.player = [AVPlayer playerWithURL:urlStream];
//Starts playback
[player play];
And still, the audio is suspended everytime the app goes in background (when I press the "Home" button).
By the way, the problem was just with the simulator. Works fine on the iOS devices