I have not modified the player but noticed that the Kaltura test player (Kaltura Player HLS URL Tester) is able to activate the bar when checking the DVR option.
I also fiddled with the entry attributes (custom_data) and added the variable from a Kaltura/Wowza entry that lets the user activate the DVR option and it works !
I would prefer to modify the player nevertheless so if you know which UIconf variable I need to set, I’l be very grateful.
We are also working and have almost finished a few lines of code for provisioning and authenticating nginx live streams alas Kaltura/Wowza. I hope to finish that soon and post it here for the convenience of all.
Best regards,