AVPlayer流可以工作，但不能 [英] AVPlayer streaming works and yet it doesn't
问题描述
在El Capitan 10.11.2和IOS 9.2应用程序下运行Xcode 7.1.1
Running Xcode 7.1.1 under El Capitan 10.11.2 an IOS 9.2 app
试图了解实现视频流播放所需的最少代码，并在此处制作非常简单的代码...严格来说，不需要观察者，但是它悄悄潜入其中，所以我就把它留了下来.
Trying to understand the minimum code I need to implement playback for a Video stream, and crafted this very simply piece here ... don't need the Observer strictly speaking, but it crept in so I left it.
static const NSString *ItemStatusContext;
// a class static
self.avPlayer = [AVPlayer playerWithURL:[NSURL URLWithString:@"http://devimages.apple.com/iphone/samples/bipbop/bipbopall.m3u8"]];
[self.avPlayer addObserver:self forKeyPath:@"status" options:0 context:&ItemStatusContext];
self.avPlayerLayer = [AVPlayerLayer playerLayerWithPlayer:self.avPlayer];
self.avPlayer.actionAtItemEnd = AVPlayerActionAtItemEndNone;
avPlayerLayer.frame = CGRectMake(128, 128, 512, 386);
[self.view.layer addSublayer: avPlayerLayer];
[self.avPlayer play];
- (void)observeValueForKeyPath:(NSString *)keyPath ofObject:(id)object
change:(NSDictionary *)change context:(void *)context {
if (context == &ItemStatusContext ) {
AVPlayer *thePlayer = (AVPlayer *)object;
if ([thePlayer status] == AVPlayerStatusFailed) {
NSError *error = [self.avPlayer error];
// Respond to error: for example, display an alert sheet.
NSLog(@"error %@",error);
return;
}
NSLog(@"player status %ld",(long)[thePlayer status]);
// Deal with other status change if appropriate.
}
// Deal with other change notifications if appropriate.
//[super observeValueForKeyPath:keyPath ofObject:object
// change:change context:context];
return;
}
它可以工作，但是...仅在Apple提供的演示流上，我没有给它播放其他内容...
It works, but... only on the demo stream provided by Apple, nothing else I give it plays ...
**尝试**
也尝试将此代码添加到混合中，这也适用于Apple演示流，但是我没有尝试过其他代码.
Tried adding this code into the mix too, which also works with the Apple demo stream, but none of the others I have tried.
NSURL *url = [NSURL URLWithString:@"http://devimages.apple.com/iphone/samples/bipbop/bipbopall.m3u8"];
AVURLAsset *avasset = [[AVURLAsset alloc] initWithURL:url options:nil];
avPlayerItem = [[AVPlayerItem alloc] initWithAsset:avasset];
self.avPlayer = [[AVPlayer alloc] initWithPlayerItem:avPlayerItem];
.......
** 更多更新 ** ...因为我没有从中获得有用的信息，所以重新设计了观察器，现在它告诉我Apple m3u8确实可以玩；并在我尝试的其他所有内容上均失败" ...
** MORE UPDATES ** ... reworked observer since I wasn't getting useful info from it, now it tells me the Apple m3u8 is really to play; and "fails" on everything else I try...
所以....所有这些都失败了，例如...
So .... all these fail for example ...
//self.avPlayer = [AVPlayer playerWithURL:[NSURL URLWithString:@"http://content.uplynk.com/209da4fef4b442f6b8a100d71a9f6a9a.m3u8"]];
//self.avPlayer = [AVPlayer playerWithURL:[NSURL URLWithString:@"http://content.jwplatform.com/manifests/vM7nH0Kl.m3u8"]];
//self.avPlayer = [AVPlayer playerWithURL:[NSURL URLWithString:@"http://walterebert.com/playground/video/hls/sintel-trailer.m3u8"]];
- (void)observeValueForKeyPath:(NSString *)keyPath ofObject:(id)object
change:(NSDictionary *)change context:(void *)context {
if (object == self.avPlayer.currentItem && [keyPath isEqualToString:@"status"]) {
if (avPlayer.currentItem.status == AVPlayerStatusFailed) {
NSError *error = [self.avPlayer error];
// Respond to error: for example, display an alert sheet.
NSLog(@"AVPlayerStatusFailed error %@",error);
return;
}
if (avPlayer.currentItem.status == AVPlayerStatusUnknown) {
NSError *error = [self.avPlayer error];
NSLog(@"AVPlayerStatusUnknown error %@",error);
}
if (avPlayer.currentItem.status == AVPlayerStatusReadyToPlay) {
NSLog(@"AVPlayerStatusReadyToPlay");
[self.avPlayer play];
}
//[super observeValueForKeyPath:keyPath ofObject:object
// change:change context:&ItemStatusContext];
// Deal with other status change if appropriate.
}
// Deal with other change notifications if appropriate.
//[super observeValueForKeyPath:keyPath ofObject:object
// change:change context:context];
return;
}
推荐答案
亲爱的，以前记得一些有关此的东西；真的没有任何借口.设法通过寻找完全不同的地方来修复它；在info.plist中，需要此键才能播放任意流.
Phew, recall something about this before; no excuses really. Managed to fix it by looking somewhere completely different; in info.plist which needs this key in it to play arbitrary streams.
<key>NSAppTransportSecurity</key>
<dict>
<key>NSAllowsArbitraryLoads</key>
<true/>
</dict>
我知道它有点松懈，但是如果他们想让我的应用程序更安全，我会让读者多做一些研究:)为此，请使用
I know it is bit lax, but I leave the reader to do so some more research if they want to make their app more bullet proof that I care about right now :) Do this, use the observer code in the EDITED section and cut out the [self.avPlayer play] (line 8) in the main code your be in business.
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