在播放音频时，就了解到了官方不推荐使用MPMoviePlayerViewController，并且IOS9.0以后将要废弃，是因为要主推AVPlayerViewController。
其实AVPlayerViewController是可以播放视频的，苹果这么做，也是为了统一播放媒体的API
<code class="language-Swift hljs lasso has-numbering"> <span class="hljs-built_in">var</span> avPlayerViewController:AVPlayerViewController<span class="hljs-subst">!</span>@IBAction func playVideo(sender: AnyObject) {<span class="hljs-keyword">let</span> url:NSURL <span class="hljs-subst">=</span> NSBundle<span class="hljs-built_in">.</span>mainBundle()<span class="hljs-built_in">.</span>URLForResource(<span class="hljs-string">"AngelBeats"</span>, withExtension: <span class="hljs-string">"mp4"</span>)<span class="hljs-subst">!</span>NSLog(<span class="hljs-string">"\(url)"</span>)<span class="hljs-comment">// 实例化AVPlayer</span><span class="hljs-keyword">let</span> player <span class="hljs-subst">=</span> AVPlayer(URL: url)<span class="hljs-comment">// 实例化AVPlayerViewController</span><span class="hljs-built_in">self</span><span class="hljs-built_in">.</span>avPlayerViewController <span class="hljs-subst">=</span> AVPlayerViewController()<span class="hljs-comment">// 设置AVPlayerViewController的AVPlayer</span><span class="hljs-built_in">self</span><span class="hljs-built_in">.</span>avPlayerViewController<span class="hljs-built_in">.</span>player <span class="hljs-subst">=</span> player<span class="hljs-comment">// Controller跳转</span><span class="hljs-built_in">self</span><span class="hljs-built_in">.</span>presentViewController(<span class="hljs-built_in">self</span><span class="hljs-built_in">.</span>avPlayerViewController, animated: <span class="hljs-literal">true</span>){() <span class="hljs-subst">-> </span><span class="hljs-literal">Void</span> <span class="hljs-keyword">in</span><span class="hljs-comment">// 调用AVPlayerViewController的AVPlayer进行播放</span><span class="hljs-built_in">self</span><span class="hljs-built_in">.</span>avPlayerViewController<span class="hljs-built_in">.</span>player<span class="hljs-subst">?</span><span class="hljs-built_in">.</span>play()}}</code>