是否可以通过AirPlay获取HTTP直播流的当前日期？

Question

Working on an iOS project that uses HTTP Live Streaming (HLS), we found that when the app uses AirPlay, to play the streaming on a Apple TV, the currentDate property of the currentItem of the AVPlayer returns nil . In other words:

AVPlayerItem *item = [player currentItem]; //Where "player" is the AVPlayer object.
NSDate *date = [item currentDate]; //date is nil, when using AirPlay.

So, is it possible to get that currentDate by other means?

Answer 1

You should include EXT-X-PROGRAM-DATE-TIME tag info in your m3u8 files. For example, if I created a live stream at 2017/7/12 12:00:00

I should add

#EXT-X-PROGRAM-DATE-TIME:2017-07-12T12:00:00.000Z in my .m3u8 header

and you will get currentDate when you call the method in playerItem.(However, that date info is only supported to s not ms unit.)