The Citilab folks are getting me copies of the recorded ESUG talks, so I don't really need this solution - but before I knew that was going to happen, I set up two Applescripts and a Smalltalk workspace script to start recording at 3 AM my time (9 AM in Barcelona). The Smalltalk looks like this:
isTime := false.
safariScript := '/Users/james/Documents/working_77/openSafari.scpt'.
castScript := '/Users/james/Documents/working_77/doRecord.scpt'.
test := Timestamp readFrom: '9/14/10 02:58:00' readStream.
block := [[isTime]
whileFalse: [(Delay forSeconds: 60) wait.
time := Timestamp now.
time >= test
ifTrue: [isTime := true.
ExternalProcess cshOne: safariScript.
(Delay forSeconds: 5) wait.
ExternalProcess cshOne: castScript]]].
And the two AppleScripts:
tell application "Safari"
open location "http://eventv.projectescitilab.eu/index.html"
activate application "iShowU"
tell application "System Events"
tell process "iShowU"
click button "Record" of window "iShowU"
Pretty simple stuff, and it's easy enough to do. If I had to do this sort of thing often enough, I'd likely create a CRON job instead of the Smalltalk workspace, but for ad-hoc things, this works quite nicely.