HLS labels & backup streams compatibility?
Apple's docs suggest that to support redundant streams, you can just interweave the backup playlists in along with the primary playlists. See https://developer.apple.com/library/ios/documentation/NetworkingInternet/Conceptual/StreamingMediaGuide/UsingHTTPLiveStreaming/UsingHTTPLiveStreaming.html
Akamai also suggests doing this for this "Media Services Live" service for HLS streaming.
The problem I found is that when JW Player builds the HLS labels, it looks at each playlist within the main playlist and assigns a label to it - so this creates duplicate entries - two for each resolution / bitrate (backup and primary).
I understand this is a difficult problem to solve, since I don't see how JW player could really determine which is the primary and which is the backup.
Just wanted to put this on your radar