CMTimeMake(a,b) a当前第几帧, b每秒钟多少帧.当前播放时间a/b
CMTimeMakeWithSeconds(a,b) a当前时间,b每秒钟多少帧.
参考链接:
http://www.cnblogs.com/sell/archive/2013/01/29/2880832.html
//www.greatytc.com/p/6a1cd03343c9
CMTimeMake(a,b) a当前第几帧, b每秒钟多少帧.当前播放时间a/b
CMTimeMakeWithSeconds(a,b) a当前时间,b每秒钟多少帧.
参考链接:
http://www.cnblogs.com/sell/archive/2013/01/29/2880832.html
//www.greatytc.com/p/6a1cd03343c9