I see your stream is HLS. I believe you have the updated version of FF that has flash disabled. Unfortunately there is no workaround for this at the present time (other than providing a fallback mp4).
Cooper, installing Flash 220.127.116.11 gets around the Firefox Flash block. The block applies only to 18.104.22.168 (I believe that's the number) and earlier.
There are also other ways to tell Firefox to permit Flash. In most cases, it prompts you for permission on a given site, but perhaps that isn't happening with a deeply-embedded Flash routine like the one JW is using for HLS.
If you know what you're doing, you can do some noodling around with Blocklist.xml, though that gets updated regularly, so editing would have to be re-done. To prevent the updating, you could set extensions.blocklist.url to null. Or you can set extensions.blocklist.enable to false, which will prevent FF from using the blocklist at all.
Lots of options, but updating Flash is the quick and dirty one, at least for now.
MisterNeutron – thanks for your insight here. This is more of a workaround for the end-user, but I’ll definitely pass this on to others because we’ve been hearing this a lot lately.
Thanks again -
Let's cross our fingers that DASH is added in the next version of JW. It's only a matter of time before every other browser does the same thing firefox did and the end user is not going to understand what to do to fix the issue themselves.
Good question – I don’t know the details about DASH support in FF but this document shows it’s supported with Webm codec but is disabled by default:
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