On May 22, 2007, at 7:29 PM, Ron Jensen wrote:

> On Tue, 2007-05-22 at 18:13 +0100, Antonio Almeida wrote:
>> Hi,
>> I would like to use FlightGear to generate the scene observed by a
>> UAV's onboard camera.
>> Basically, this would translate to feeding FlightGear the FDM data
>> and visualizing the image generated by FlightGear in another  
>> computer,
>> across a network, using for example streaming video.
>> I suppose this is a bit of a far-fetched idea, but is there any sort
>> of support for this (or something similar) already implemented?
>> If not, do you have any suggestions on how to achieve it, using
>> external tools and/or contributing to FlightGear?
>> At the moment I'm just brainstorming!
>> Thanks,
>> António Almeida
> Have you looked at the --jpg-httpd option yet?
>> From fgfs --help --verbose:
> --jpg-httpd=port        Enable screen shot http server on the  
> specified
>                         port
> This works to send jpeg images over the net that can be refreshed  
> fairly
> rapidly...  Not exactly streaming video, but close.  I'm not sure  
> if/how
> you could scale it down short of scaling the window on the server
> machine.
> Ron

Hmm?  I have used jpg-httpd to try to capture video and have been  
surprised at how slow the performance is.  I always assumed that it  
was just a limit in the FG implementation, but now that I see the  
above it makes me wonder why I am running so slowly.  I can probably  
get something like a frame every 2 seconds.  I have tried using  
firefox and curl to grab images and they are slow to download.
Any ideas why I might be having that kind of performance when others  
are seeing fast performance?
I am running with FG 9.10 ("release" version not CVS) on a MacBookPro  
(2.16 GHz Intel Core Duo) and FG itself gives a good frame rate.

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