livestreamer 1.12.1, ustream, creativelive - mobile only?!?!

[FredThompson]

This type of call to livestreamer worked before ustream made some changes a couple of months ago:

livestreamer --retry-streams 1 --retry-open 200000 --stream-segment-threads 3 --stream-segment-attempts 4 -o "watch1 01.flv" "https://www.ustream.tv/embed/952665" 720p+

(That's the stream at CreativeLive.com's watch1 channel.)

livestreamer 1.12.0 and 1.12.1 seem to detect only 240, 360, and 480p mobile streams.

How to properly get access to the 720p+ streams?