音视频播放是iOS开发常用的功能，在这里做一个简单的总结：
音频简单来分为短音频（音效）、长音频（音乐）
（1）简单音效的播放：<AVFoundation>
// 1.获得音效文件的路径
NSURL *url = [[NSBundle mainBundle] URLForResource:@"m_03.wav" withExtension:nil];
// 2.加载音效文件，得到对应的音效ID
SystemSoundID soundID = 0;
AudioServicesCreateSystemSoundID((__bridge CFURLRef)(url), &soundID);
// 3.播放音效 不带震动
AudioServicesPlaySystemSound(soundID);
//播放时带有震动
//AudioServicesPlayAlertSound(soundID)
（2）音乐播放：AVAudioPlayer(只能用来播放本地音乐)< AVFoundation>
- (IBAction)startMusic:(id)sender {
[self.player play];
// [self playMusicWithFileName:@"music_a.mp3"];
}
- (IBAction)suspendMusic:(id)sender {
[self.player pause];
// [self pauseMusicWithFileName:@"music_a.mp3"];
}
- (IBAction)stopMusic:(id)sender {
[self.player stop];
self.player = nil;
// [self stopMusicWithFileName:@"music_a.mp3"];
}
#pragma mark - 懒加载
- (AVAudioPlayer *)player
{
if (_player == nil) {
// 1.创建音乐文件
NSURL *url = [[NSBundle mainBundle] URLForResource:@"music_a.mp3" withExtension:nil];
// 2.创建播放器
_player = [[AVAudioPlayer alloc] initWithContentsOfURL:url error:nil];
// 3.准备播放
[_player prepareToPlay];
}
return _player;
}
（3）播放本地音乐、网络音乐、本地视频、网络视频AVPlayer < AVFoundation>
- (AVPlayer *)player
{
if (_player == nil) {
//方法一
// 1.加载视频资源
//本地
//NSURL *localUrl = [[NSBundle mainBundle] URLForResource:@"music_a.mp3" withExtension:nil];
NSURL *localUrl = [[NSBundle mainBundle] URLForResource:@"testVideo.mp4" withExtension:nil];
//网络
NSURL *networkUrl = [NSURL URLWithString:@""];
// 2.创建播放器
AVPlayerItem *playerItem = [AVPlayerItem playerItemWithURL:localUrl];
_player = [AVPlayer playerWithPlayerItem:playerItem];
// 3.创建AVPlayerLayer 音频不需要 视频需要
AVPlayerLayer *playerLayer = [AVPlayerLayer playerLayerWithPlayer:_player];
playerLayer.frame = CGRectMake(0, 100, self.view.bounds.size.width, self.view.bounds.size.width * 9 / 16);
[self.view.layer addSublayer:playerLayer];
}
return _player;
}
//调用播放方法
[self.player play];
（4）.视频播放还有其他方法
（1）.MPMoviePlayerController<MediaPlayer/MediaPlayer.h> (可以调节全屏状态和非全屏状态) (iOS9.0后废弃)
- (void)mpMoviePlayerControllerTest
{
NSURL*url=[NSURL URLWithString:@"http://v4ttyey-10001453.video.myqcloud.com/Microblog/288-4-1452304375video1466172731.mp4"];
NSURL *localUrl = [[NSBundle mainBundle] URLForResource:@"testVideo.mp4" withExtension:nil];
MPMoviePlayerController *mpMoviePlayerVC = [[MPMoviePlayerController alloc]initWithContentURL:url];
mpMoviePlayerVC.view.frame = CGRectMake(0, 100, self.view.bounds.size.width, self.view.bounds.size.width * 9 / 16);
[self.view addSubview:mpMoviePlayerVC.view];
}
（2） MPMoviePlayerViewController<MediaPlayer/MediaPlayer.h> (以modal的样式弹出来,只能全屏显示) (iOS9.0后废弃)
- (void)mpMoviePlayerViewControllerTest
{
NSURL*url=[NSURL URLWithString:@"http://v4ttyey-10001453.video.myqcloud.com/Microblog/288-4-1452304375video1466172731.mp4"];
//NSURL *localUrl = [[NSBundle mainBundle] URLForResource:@"testVideo.mp4" withExtension:nil];
MPMoviePlayerViewController *playerViewVC = [[MPMoviePlayerViewController alloc]initWithContentURL:url];
[self presentViewController:playerViewVC animated:YES completion:nil];
}
（3）AVPlayerViewController(以modal的样式弹出来,只能全屏显示)<AVKit>
//此处传入的player就是AVPlayer格式的
AVPlayerViewController *avplayerVC = [[AVPlayerViewController alloc]init];
avplayerVC.player = _player;
[self presentViewController:avplayerVC animated:YES completion:nil];
所有格式都支持的框架VLC 、ffmpeg 、kxMovie
上面的demo地址 https://github.com/hangxing0215/SHAVDemo
