[英]Why Video plays without sound on MPMoviePlayer in iPhone
我正在使用MPMoviePlayer在我的應用程序中播放本地視頻文件。 文件采用.mov格式。 當我在模擬器中運行我的應用程序時,它運行正常。 但是當我在iPhone上運行它時,視頻卻沒有聲音。 這是我的代碼,
self.currUrl = [NSURL fileURLWithPath:[[NSBundle mainBundle] pathForResource:@"Gun_Shot" ofType:@"mov"]];
if (self.mpc)
{
[self.mpc release];
self.mpc = nil;
}
self.mpc = [[MPMoviePlayerController alloc]
initWithContentURL:self.currUrl];
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(moviePlayBackDidFinish:) name:MPMoviePlayerPlaybackDidFinishNotification object:self.mpc];
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(moviePlayBackLoadStateDidChange:) name:MPMoviePlayerLoadStateDidChangeNotification object:self.mpc];
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(moviePlayBackDidEnterFullScreen:) name:MPMoviePlayerDidEnterFullscreenNotification object:self.mpc];
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(moviePlayBackDidExitFullScreen:) name:MPMoviePlayerDidExitFullscreenNotification object:self.mpc];
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(moviePlayBackNowPlayingContinues:) name:MPMoviePlayerNowPlayingMovieDidChangeNotification object:self.mpc];
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(moviePlayBackStateChanged:) name:MPMoviePlayerPlaybackStateDidChangeNotification object:self.mpc];
self.mpc.controlStyle = MPMovieControlStyleNone;
self.mpc.shouldAutoplay = NO;
self.mpc.view.frame = CGRectMake(0, 0, self.mpView.frame.size.width, self.mpView.frame.size.height);
[self.mpView addSubview:self.mpc.view];
[self.mpView bringSubviewToFront:self.topMainView];
[self.mpView bringSubviewToFront:self.bottomMainView];
[self.mpc prepareToPlay];
self.timeLbl.text = [NSString stringWithFormat:@"%f Sec(s)", self.mpc.duration];
我不明白為什么該應用在iPhone上運行時視頻會靜音。 任何幫助將不勝感激..
無需查看您的代碼。 原因之一可能是您的iPhone處於靜音模式。
這個答案可能也對您有幫助。
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