1. 这里的流媒体地址是指服务端那边已经调好格式的可以在iOS上播放的视频流。
下面提供几个视频流的地址：
NSString *linkStr =
http://61.160.227.6/rtencode_m3u8?bl=/f4v/61/140783661.h264_2.f4v&t=8&em=1&se=c629000050724fef&k=8bb5b375af9ab17fa859074fb394455fcd7505",
@"http://61.160.230.12/rtencode_m3u8?bl=/f4v/85/140698785.h264_2.f4v&t=8&em=1&se=b245000050723fb4&k=0dfa39da8293f0684c6cd84fb395905fcd7505",
@"http://58.215.144.42/rtencode_m3u8?bl=/f4v/46/140739646.h264_1.f4v&t=8&em=1&se=751300005072e2d8&k=8d77cf2355c3bf817f6e364fb396005fcd7505“
@"http://ocj2.smgbb.cn/ocj1/ocj1.m3u8"
@"http://ocj2.smgbb.cn/ocj2/ocj2.m3u8"
2.播放视频
CustomPlayerView.h 文件
#import
#import
@interfaceCustomPlayerView :UIView
@property(nonatomic,retain)AVPlayer*player;
@end
CustomPlayerView.m 文件
#import"CustomPlayerView.h"
@implementationCustomPlayerView
+(Class)layerClass{
return[AVPlayerLayerclass];
}
-(AVPlayer*)player{
return[(AVPlayerLayer*)[selflayer]player];
}
-(void)setPlayer:(AVPlayer*)thePlayer{
return[(AVPlayerLayer*)[selflayer]setPlayer:thePlayer];
}
@end
CustomMoviePlayerController.h 文件
#import
#import"CustomPlayerView.h"
#import"MBProgressHUD.h"
@interfaceCustomMoviePlayerController :UIViewController{
IBOutletCustomPlayerView*moviePlayeView;
IBOutletUIButton*playButton;
IBOutletUISlider*movieProgressSlider;
//视频的总时间
CGFloattotalMovieDuration;
IBOutletUILabel*currentTimeLabel;
IBOutletUILabel*totalTimeLabel;
MBProgressHUD*loadingView;
}
@property(nonatomic,retain)NSURL*movieURL;
-(IBAction)doneClick:(id)sender;
-(IBAction)playClick:(id)sender;
-(IBAction)movieProgressDragged:(id)sender;
@end
CustomMoviePlayerController.m文件
//
// CustomMoviePlayerController.m
// VideoStreamDemo2
//
// Created by刘大兵on 12-5-17.
// Copyright (c) 2012年中华中等专业学校. All rights reserved.
//
#import"CustomMoviePlayerController.h"
@interfaceCustomMoviePlayerController()
-(void)initPlayer;
-(void)monitorMovieProgress;
-(NSString*)convertMovieTimeToText:(CGFloat)time;
-(void)initMoviewPreview;
-(CustomPlayerView*)previewViewCreate:(CGFloat)xOffsetInSlider;
@end
@implementationCustomMoviePlayerController
@synthesizemovieURL;
#pragma mark - View lifecycle
- (void)viewDidLoad
{
[superviewDidLoad];
// Do any additional setup after loading the view from its nib.
loadingView= [[MBProgressHUDalloc]initWithView:self.view];
loadingView.labelText=@"正在加载...";
[self.viewaddSubview:loadingView];
[selfinitPlayer];
[selfmonitorMovieProgress];
[selfinitMoviewPreview];
}
- (void)dealloc {
[movieURLrelease];
[loadingViewrelease];
//释放对视频播放完成的监测
[[NSNotificationCenterdefaultCenter]removeObserver:selfname:AVPlayerItemDidPlayToEndTimeNotificationobject:moviePlayeView.player.currentItem];
//释放掉对playItem的观察
[moviePlayeView.player.currentItemremoveObserver:self
forKeyPath:@"status"
context:nil];
[moviePlayeViewrelease];
[superdealloc];
}
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
// Return YES for supported orientations
returninterfaceOrientation!=UIInterfaceOrientationPortraitUpsideDown;
}
-(void)initPlayer{
//显示loadingView
[loadingViewshow:YES];
//使用playerItem获取视频的信息，当前播放时间，总时间等
AVPlayerItem*playerItem = [AVPlayerItemplayerItemWithURL:movieURL];
//player是视频播放的控制器，可以用来快进播放，暂停等
AVPlayer*player = [AVPlayerplayerWithPlayerItem:playerItem];
[moviePlayeViewsetPlayer:player];
[moviePlayeView.playerplay];
//计算视频总时间
CMTimetotalTime = playerItem.duration;
//因为slider的值是小数，要转成float，当前时间和总时间相除才能得到小数,因为5/10=0
totalMovieDuration= (CGFloat)totalTime.value/totalTime.timescale;
//NSLog(@"totalMovieDuration:%f",totalMovieDuration);
//在totalTimeLabel上显示总时间
totalTimeLabel.text= [selfconvertMovieTimeToText:totalMovieDuration];
//检测视频加载状态，加载完成隐藏loadingView
[moviePlayeView.player.currentItemaddObserver:self
forKeyPath:@"status"
options:NSKeyValueObservingOptionNew
context:nil];
//添加视频播放完成的notifation
[[NSNotificationCenterdefaultCenter]addObserver:selfselector:@selector(moviePlayDidEnd:)name:AVPlayerItemDidPlayToEndTimeNotificationobject:moviePlayeView.player.currentItem];
}
- (void)observeValueForKeyPath:(NSString*)keyPath ofObject:(id)object change:(NSDictionary*)change context:(void*)context{
// NSLog(@"keyPath:%@,object:%@",keyPath,NSStringFromClass([object class]));
if([keyPathisEqualToString:@"status"]) {
AVPlayerItem*playerItem = (AVPlayerItem*)object;
if(playerItem.status==AVPlayerStatusReadyToPlay) {
//视频加载完成，隐藏loadingView
[loadingViewhide:YES];
}
}
}
-(NSString*)convertMovieTimeToText:(CGFloat)time{
//把秒数转换成文字
if(time<60.f) {
return[NSStringstringWithFormat:@"%.0f秒",time];
}else{
return[NSStringstringWithFormat:@"%.2f",time/60];
}
}
-(void)monitorMovieProgress{
//使用movieProgressSlider反应视频播放的进度
//第一个参数反应了检测的频率
[moviePlayeView.playeraddPeriodicTimeObserverForInterval:CMTimeMake(1,1)queue:NULLusingBlock:^(CMTimetime){
//获取当前时间
CMTimecurrentTime =moviePlayeView.player.currentItem.currentTime;
//转成秒数
CGFloatcurrentPlayTime = (CGFloat)currentTime.value/currentTime.timescale;
movieProgressSlider.value= currentPlayTime/totalMovieDuration;
//用label显示当前播放的秒数
//判断秒数是否满一分钟,如果不满一分钟显示秒,如果满一分钟，显示分钟
currentTimeLabel.text= [selfconvertMovieTimeToText:currentPlayTime];
//NSLog(@"currentTimeLabel.text:%@",currentTimeLabel.text);
}];
}
-(void)moviePlayDidEnd:(NSNotification*)notification{
//视频播放完成，回退到视频列表页面
[selfdoneClick:nil];
}
-(IBAction)doneClick:(id)sender{
//停止播放，不然页面dimiss了以后，还有播放的声音
[moviePlayeView.playerpause];
[selfdismissModalViewControllerAnimated:YES];
}
-(IBAction)playClick:(id)sender{
//播放暂停控制，进入页面就开始播放视频，然后播放按钮的文字是暂停
//点击一下播放视频停止，按钮文字变成播放
//判断是播放还是暂停状态
if([[playButtontitleForState:UIControlStateNormal]isEqualToString:@"暂停"]) {
//从播放状态进入暂停
[moviePlayeView.playerpause];
[playButtonsetTitle:@"播放"forState:UIControlStateNormal];
}else{
//从暂停状态进入播放
[moviePlayeView.playerplay];
[playButtonsetTitle:@"暂停"forState:UIControlStateNormal];
}
}
-(IBAction)movieProgressDragged:(id)sender{
//拖动改变视频播放进度
//计算出拖动的当前秒数
NSIntegerdragedSeconds =floorf(totalMovieDuration*movieProgressSlider.value);
NSLog(@"dragedSeconds:%d",dragedSeconds);
//转换成CMTime才能给player来控制播放进度
CMTimedragedCMTime =CMTimeMake(dragedSeconds,1);
[moviePlayeView.playerpause];
[moviePlayeView.playerseekToTime:dragedCMTimecompletionHandler:^(BOOLfinish){
[moviePlayeView.playerplay];
}];
}
//长按手势
-(void)initMoviewPreview{
UILongPressGestureRecognizer*longPress = [[UILongPressGestureRecognizeralloc]initWithTarget:selfaction:@selector(progessSliderLongPress:)];
[movieProgressSlideraddGestureRecognizer:longPress];
[longPressrelease];
}
-(void)progessSliderLongPress:(UILongPressGestureRecognizer*)theLong{
//因为长按手势的方法最少会被调用两次，所以为了不重复弹出popOver进行判断，只调用一次弹出popOver
if(theLong.state==UIGestureRecognizerStateBegan) {
//长按以后弹出popView在长按的位置
CGPointtouchPoint = [theLonglocationInView:self.view];
//只能显示在进度条上方
CGRectpopOverFrame =CGRectMake(touchPoint.x-100,movieProgressSlider.frame.origin.y,200,150);
UIViewController*previewMovieController = [[UIViewControlleralloc]init];
//通过长按手势在slider的位置，计算视频预览的时间
CGPointtouchPointInSlider = [theLonglocationInView:movieProgressSlider];
CustomPlayerView*previewView = [selfpreviewViewCreate:touchPointInSlider.x];
previewMovieController.view.backgroundColor= [UIColorwhiteColor];
previewMovieController.view= previewView;
UIPopoverController*popoverController = [[UIPopoverControlleralloc]initWithContentViewController:previewMovieController];
//更改popover的contentSize
popoverController.delegate=self;
popoverController.popoverContentSize=CGSizeMake(200,150);
//箭头向下，指向进度条
[popoverControllerpresentPopoverFromRect:popOverFrameinView:self.viewpermittedArrowDirections:UIPopoverArrowDirectionDownanimated:YES];
//播放视频
[previewView.playerplay];
[previewMovieControllerrelease];
//不能在这里使用release和autorelease，因为popOver正在使用，release会导致crash
//[popoverController release];
}
}
//为了使调用视频预览的代码更清晰，把创建playerView的代码和创建popover的分开
-(CustomPlayerView*)previewViewCreate:(CGFloat)xOffsetInSlider{
// NSLog(@"touchPoint:%@,touchPointInSlider:%@",NSStringFromCGPoint(touchPoint),NSStringFromCGPoint(touchPointInSlider));
//把touchPointInSlider。x除以slider的宽度可以计算出预览的进度
CGFloatpreviewValue = xOffsetInSlider/movieProgressSlider.bounds.size.width;
//如果长按在进度条的中间，那么previewValue就是0。5，乘以视频的总时间，就知道了视频预览的时间
NSIntegerpreviewSeconds =floorf(previewValue*totalMovieDuration);
//秒数舍弃小数部分，转换成cmTime
CMTimepreviewCMTime =CMTimeMake(previewSeconds,1);
//初始化视频预览的view
CustomPlayerView*previewView = [[CustomPlayerViewalloc]initWithFrame:CGRectMake(0,0,200,150)];
AVPlayerItem*playerItem = [AVPlayerItemplayerItemWithURL:movieURL];
//跳到视频预览的时间
[playerItemseekToTime:previewCMTime];
//player是视频播放的控制器，可以用来快进播放，暂停等
AVPlayer*player = [AVPlayerplayerWithPlayerItem:playerItem];
[previewViewsetPlayer:player];
return[previewViewautorelease];
}
- (void)popoverControllerDidDismissPopover:(UIPopoverController*)popoverController{
//popOver已经使用完毕，release是可以的
[popoverControllerrelease];
}
@end