AVFoundation编程指南-用AVPlayer播放视频 2016-05-03 本文已影响469人 且行且珍惜_iOS https://segmentfault.com/a/1190000004054258?_ea=474224 参考文献:https://developer.apple.com/library/prerelease/ios/documentation/AudioVideo/Conceptual/AVFoundationPG/Articles/02_Playback.html#//apple_ref/doc/uid/TP40010188-CH3-SW8
