Wowza Community

EXT-X-PROGRAM-DATE-TIME for multibitrate


Is there any way to sync value of EXT-X-PROGRAM-DATE-TIME in chunklists in smil/amlst?

I have 7 bitrates and their tags look like:








No, not yet anyways. Unfortunately, that would not be possible with regular HLS and probably not even with LL-HLS. 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.


Things continue to change for the HLS spec and so we may see this supported in the near future. Sorry we’re not there yet though.