[英]Playing audio file while recording video in iOS
I want to play audio file while recording with camera. 我想用相机录制时播放音频文件。 I used AVAudioPlayer for playing audio and AVCamCaptureManager for recording. 我使用AVAudioPlayer播放音频和AVCamCaptureManager进行录制。
But when audio starts to play, preview screen is freezing. 但是当音频开始播放时,预览屏幕就会冻结。 What should i do? 我该怎么办?
Thanks for your helping. 谢谢你的帮助。 Here is the code. 这是代码。 (I'm working on AVCam example.) (我正在研究AVCam的例子。)
This is preview part. 这是预览部分。
if ([self captureManager] == nil) {
AVCamCaptureManager *manager = [[AVCamCaptureManager alloc] init];
[self setCaptureManager:manager];
[[self captureManager] setDelegate:self];
if ([[self captureManager] setupSession]) {
AVCaptureVideoPreviewLayer *newCaptureVideoPreviewLayer = [[AVCaptureVideoPreviewLayer alloc] initWithSession:[[self captureManager] session]];
UIView *view = [self videoPreviewView];
CALayer *viewLayer = [view layer];
[viewLayer setMasksToBounds:YES];
CGRect bounds = CGRectMake(0, 0, 480, 320);
[newCaptureVideoPreviewLayer setFrame:bounds];
if ([newCaptureVideoPreviewLayer isOrientationSupported]) {
[newCaptureVideoPreviewLayer setOrientation:[DeviceProperties setPreviewOrientation]];
}
[newCaptureVideoPreviewLayer setVideoGravity:AVLayerVideoGravityResizeAspectFill];
[viewLayer insertSublayer:newCaptureVideoPreviewLayer below:[[viewLayer sublayers] objectAtIndex:0]];
[self setCaptureVideoPreviewLayer:newCaptureVideoPreviewLayer];
dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{
[[[self captureManager] session] startRunning];
});
[self updateButtonStates];
}
And this is audio play part. 这是音频播放的一部分。
NSURL *url = [NSURL fileURLWithPath:[[NSBundle mainBundle] pathForResource:[NSString stringWithFormat:@"%@", sound] ofType:@"wav"]];
AVAudioPlayer *audioPlayer = [[AVAudioPlayer alloc] initWithContentsOfURL:url error:nil];
[audioPlayer play];
If I use AudioServicesPlaySystemSound normal without freezing but this time it only works on viewDidLoad. 如果我使用AudioServicesPlaySystemSound正常而不冻结,但这次它只适用于viewDidLoad。
CFBundleRef mainBundle = CFBundleGetMainBundle();
CFURLRef soundFileRef;
soundFileRef = CFBundleCopyResourceURL(mainBundle, (CFStringRef) CFBridgingRetain(@"sound"), CFSTR ("wav"), NULL);
UInt32 soundID;
AudioServicesCreateSystemSoundID(soundFileRef, &soundID);
AudioServicesPlaySystemSound(soundID);
My problem wasn't for video but it was for playing a sound while in a call (voip type application) and the answer to this question worked for me: 我的问题不是用于视频,而是用于在通话中播放声音(voip类型应用程序),这个问题的答案对我有用:
Using vibrate and AVCaptureSession at the same time 同时使用vibrate和AVCaptureSession
Hope setting AVAudioSession
category to AVAudioSessionCategoryPlayAndRecord
will solve the problem. 希望将AVAudioSession
类设置为AVAudioSessionCategoryPlayAndRecord
将解决问题。 And also set its category options to AVAudioSessionCategoryOptionDefaultToSpeaker|AVAudioSessionCategoryOptionMixWithOthers
. 并将其类别选项设置为AVAudioSessionCategoryOptionDefaultToSpeaker|AVAudioSessionCategoryOptionMixWithOthers
。 Please check the below set of code 请检查以下代码集
@property (strong, nonatomic) AVAudioPlayer *audioPlayer;
NSURL *soundUrl = [NSURL fileURLWithPath:[[NSBundle mainBundle] pathForResource:@"VoicemailSound" ofType:@"mp3"]]; //Download and add a system sound to your project and mention its name and type here
self.audioPlayer = [[AVAudioPlayer alloc] initWithContentsOfURL:soundUrl error:nil];
[[AVAudioSession sharedInstance] setCategory: AVAudioSessionCategoryPlayAndRecord withOptions:AVAudioSessionCategoryOptionDefaultToSpeaker|AVAudioSessionCategoryOptionMixWithOthers error: nil];
[self.audioPlayer prepareToPlay];
[self.audioPlayer play];
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