You Tube: The ActionScript 2 Chromeless Player and Monetized Videos

The ActionScript 3 Player APIs, both in the chromeless and embedded variety, have been available for use since last October.
When we released the ActionScript 3 APIs, we announced the deprecation
of the ActionScript 2 equivalents. As per our deprecation policy, we
will keep the ActionScript 2 Player APIs running through October of
2012; however, we wanted to announce a change in the videos available
for playback that will affect those still using the ActionScript 2
chromeless player.

of early January, 2011, some videos that YouTube and our content
partners would like to monetize will not be playable using the
ActionScript 2 chromeless player because it does not have the ability to
show ads. If you attempt to play back such a video, an
onError event will be fired, as documented
in the ActionScript 2 Player APIs reference guide. As a developer, you
can handle this event and play an alternate video, or display an
explanatory message to your users.

note that this change only affects playback in the ActionScript 2
chromeless player. If you are using the ActionScript 2 embedded player
(i.e. the official YouTube player with built-in controls) or if you’ve
already upgraded to one of the ActionScript 3 players, you can continue
to play the same video content you can play today. Also note that you
might be using the the ActionScript 2 chromeless player indirectly if
you’re using a third-party custom video player to play back YouTube
content. Please reach out to the provider of your custom video player if
you’re not sure whether this change will affect you.

-Jeff Posnick, YouTube API Team