Salvadore, Thanks. Yes. I have been through all of this being a consultant myself and setup captioning several times, but never having these results when the client uses Digital rapids stream software that is sending 708 in embedded onCaptionInfo. JW says the HLS output from Wowza in this case is specifically tailored to IOS browser, which yes, although mis-worded I get but I am still leaning in the direction that it's the player. I really don't want to have be stuck with rtmp for caption output in JW on a browser in this case.