[P1] Live webcasts on an iBook

Peter Nacken caipirina at mac.com
Fri Jun 6 22:15:48 PDT 2003


How about instead of a DV cam I use some FW webcam .. Like iBot ?  No sound
.. But the fun of a portable 'instant' device :)

P 

on 6/7/03 5:39 AM, Joe Jones at joham at jo-ham.com wrote:

> Transmitting the signal via Airport (or even wired ethernet) would be
> tricky. An uncompressed DV stream would have too high a data rate to be
> able to sent over either of those systems (although ethernet might be
> theoretically fast enough, it's unlikely in practice).
> 
> Your iBook doesn't have anywhere near enough CPU power to encode on the
> fly, so you'd have to offload this task to another machine - a G4 tower
> with a lot of RAM perhaps, but then you run into the problem of getting
> the signal from the iBook back to the tower when the the iBook is
> remote.
> 
> DV just wasn't designed for this sort of thing. TV stations get around
> this problem by having dedicated encoding hardware (and this stuff is
> expensive) before the satellite/cable transmission, and even then you
> get a 2 second delay due to the time it takes to encode the signal into
> mpeg2/ac3. The UK uses mpeg2 as the digital TV standard since it makes
> it easy to make the set top boxes - you can just use DACs from DVD
> players, and they've been refined and worked with for a while now.
> 
> On Friday, Jun 6, 2003, at 11:41 America/Chicago, Peter Nacken wrote:
> 
>> Does anyone here of the knowing people have any experience with live
>> webcasts ??
>> 
>> I ran into this nice software on channelstorm.com and I am getting very
>> intrigued.
>> 
>> One idea I wonder if feasible is hooking up a DV cam to the ibook an
>> run
>> around with it (cam and iBook) and transmitting the signal via airport
>> (too
>> slow ? )  .. But I figure I cannot close the iBook for that .. Makes
>> running
>> around tricky ..
>> 
>> Well .. If anyone here is a specialist on that .. Maybe we can get in
>> touch
>> off list ..
>> 
>> Thanks a great weekend everyone
>> 
>> P in Fiji
>> 



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