Browser: Opera 9.8 - Opera/9.80 (Windows NT 6.1; WOW64) Presto/2.12.388 Version/12.15
(this is a standard browser version that virtually always otherwise works at Comcast websites for email & account maintenance & bill pay, even when other customers are reporting issues using other browsers and browser versions at Comcast's web sites ... dot net or dot com).
Typically I don't stream from Comcast on-line, but with this browser, ...
fwiw: at Comcast website on-demand, watch Tv on-line,
The free tv episodes from CBS stream & play.
The free tv episodes from NBC or any from Hulu never start, no errors, they just don't start.
Any of the same videos will stream & play if viewed directly at Hulu & at the Tv network's web sites, (ABC, CBS, NBC, CW).
examples:
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works at Comcast
excpt this episode, S5 | Ep4 - Outside the Bubble
42mins - but only 25min played & video stopped w/msg "you just watched .." & went to next episode
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2 Broke Girls CBS
works at Comcast
60 mins CBS
works at Comcast
The Big Bang Theory CBS
works at Comcast
The Late Late Show With Craig CBS
works at Comcast
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Star Trek: Deep Space Nine (Hulu)
doesn't work at Comcast
works fine direct at Hulu
works fine direct at CBS
Star Trek: Voyager (Hulu)
doesn't work at Comcast
works fine direct at Hulu
works fine direct at CBS
America's Funniest Home Videos (Hulu)
doesn't work at Comcast
works fine direct at Hulu
works fine direct at ABC
SHarkTank
doesn't work at Comcast - all episodes (Hulu)
works fine direct at Hulu
works fine direct at ABC
SatNight Live
doesn't work at Comcast - all episodes NBC or (Hulu)
works fine direct at Hulu
works fine direct at NBC
BLacklist
doesn't work at Comcast - all episodes (Hulu)
works fine direct at Hulu
works fine direct at NBC
Supernatural
doesn't work at Comcast - all episodes (Hulu)
works fine direct at Hulu
works fine direct at CW.