The StreamContentID parameter allows you to set a unique id for your
stream that is also tracked in Debug logs at Roku. It is an optional
parameter that is set in the same way as StreamUrls, StreamBitrates,
and StreamQualities. Although our developer partners do not currently
have access to these logs, it is probably a good idea to start
tagging any content you generate in this way. This will futureproof
you for a day we may need to jointly track down a playback bug in
one of your streams. The StreamContentID parameter is documented
in the Component Reference Guide.
--Kevin