Re: [Flightgear-devel] Flightgear visualization as streaming video

[Leidson C. A. F. <pop...@gm...>]

Hi Adam,

In fact, the 0.9.10 is very slow, but I did a rewrite of httpd-jpg code and
I believe that this feature will be released with 0.9.11 version.

Try get latest CVS code and you'll see that is really very fast. FlightGear
now is capable to stream the images almost so fast as simulator screen.

Leidson
PlanetaMessenger.org - Java Universal Messenger

On 5/24/07, Adam Dershowitz <ade...@ex...> wrote:
>
>
> 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,
> >> Ant=F3nio Almeida
> >
> > Have you looked at the --jpg-httpd option yet?
> >> From fgfs --help --verbose:
> > --jpg-httpd=3Dport        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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