/** 视频链接 */
#define videoURL1 @"http://clips.vorwaerts-gmbh.de/big_buck_bunny.mp4"
#define videoURL2 @"http://vjs.zencdn.net/v/oceans.mp4"
#define videoURL3 @"https://media.w3.org/2010/05/sintel/trailer.mp4"
原址:https://blog.csdn.net/weixin_41010198/article/details/88055078