I want to stream a video to multiple android devices. I am using Wowza streaming engine and ffmpeg on the server to stream it but not able to synchronize it. Is there any way to pre-configured the time delay across multiple devices and access/read live streaming time status by accessing video frame ID or something similar ?
For example if HLS has time latency of 2-6 seconds than I can configure the Wowza server to stream in 8 seconds, which will guarantee the time sync across multiple devices.
I don’t believe we can, but I am double checking.
There is a EXT-X-PROGRAM-DATE-TIME tag that can be added to the manifest which should specify the exact presentation time of a chunk so if the player supports it then it could maybe use it for alignment.
[https://tools.ietf.org/html/draft-pantos-http-live-streaming-13#section-3.4.5](https://tools.ietf.org/html/draft-pantos-http-live-streaming-13#section-3.4.5)
[https://www.wowza.com/docs/how-to-control-display-of-program-date-and-time-headers-in-apple-hls-chunklists-for-live-streams-ext-x-program-date-time](https://www.wowza.com/docs/how-to-control-display-of-program-date-and-time-headers-in-apple-hls-chunklists-for-live-streams-ext-x-program-date-time)
The chances of Android players supporting it are probably slim at best.
Other than that, at this time there is not a whole lot you can do with syncing up device playback until the LL-HLS spec is more widely supported and you’ll be closer to real time.