Re: [osg-users] Rendering 2 video stream

[cedric pinson]

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Hash: SHA1

Hi Adrian,

You can stream directly from the source, but in order to avoid the
same machine support the broadcasting and generating the stream, i
used two machine:
o the stream generator
o a server on the net that can send 100Mb/sec

If you have only a few client or if your stream needs to be view in
localnetwork then maybe you can avoid the broadcast server.

To use the flux on a webpage i used http://www.flumotion.net/ . You
can have a look on the web, then the html needed to use the flux is

http://stream.pok.me/stream.ogg
http://stream.pok.me/stream.ogg>" tabindex="0"> 

Off course you will maybe need some fallback depending on your target.

Cheers,
Cedric


On 03/11/10 13:09, Adrian Egli OpenSceneGraph (3D) wrote:
> Hi Cedric,
>
> Sorry to interrupt you again. Well once i have the video rendered ,
>  i launch gstreamer with gst-launch-0.10 and with the parameters
> you send me once. Now the gstream takes the input from location and
> streams it as a ogg video over network. Do i need a webserver
> instance to stream to or how does it work? own can i integrate it
> into a firefox html webpage. say i will stream it from localhost
> and watch on localhost with firefox -console my_Test_page.hmtl with
> the video display. and i have the osgviewer application running and
> i can navigate with my mouse (as common) and watch in real time the
> video beside with a copy of the osgviewer frame buffer output/
>
> /adrian
>
>
> Hi, I render a video game based on osg into a video stream, you can
> have an idea here http://plopbyte.net/?page_id=6/ you need a
> firefox plugin to watch it.
>
> The basic idea works on linux with gstreamer. Dont tested on
> windows but because there is gstreamer, maybe it works too.
>
> In the game code i added a thread that write image at a given rate.
> This file is written into a file descriptor created with mkfifo.
> Then i use a command line when the game is running: gst-launch-0.10
> filesrc location=myfifo ! videoparse width=800 height=600 format=15
> framerate=20/1 ! ffmpegcolorspace ! videoscale ! video/x-raw-yuv,
> width=800, height=600 ! videoflip method=5  ! theoraenc quality=40
> ! oggmux ! gdppay ! tcpserversink port=12000 2>&1 >>log
>
> The advantage using gstreamer is that you can use the codec you
> want to encode the video and stream it over the web.
>
> The code is inside this project http://hg.plopbyte.net/pokme/
>
> Cheers, Cedric
>
> 2010/2/6 Cedric Pinson  >
>
> Hi Adrian,
>
> I am sorry i dont have a small proof of concept only the code
> integrated to a project (pokme). I guess it would need one or two
> day of work to setup a small example.
>
> Cheers, Cedric
>
> -- Provide OpenGL services around OpenSceneGraph and more +33 659
> 598 614 Cedric Pinson mailto:cedric.pin...@plopbyte.net
>  http://www.plopbyte.net
>
>
> On Sat, 2010-02-06 at 11:53 +0100, Adrian Egli OpenSceneGraph (3D)
> wrote:
>> Hi all,
>>
>> thanks for the short answer. i am looking for a small test.cpp
>> (osgviewer -> render2video -> stream) has someone still
> implemented
>> such a demo?
>>
>> /adrian
>>
>> 2010/2/2 Cedric Pinson  >
>> Hi, I render a video game based on osg into a video
> stream, you
>> can have an idea here http://plopbyte.net/?page_id=6/ you need a
> firefox
>> plugin to watch it.
>>
>> The basic idea works on linux with gstreamer. Dont
> tested on
>> windows but because there is gstreamer, maybe it works too.
>>
>> In the game code i added a thread that write image at
> a given
>> rate. This file is written into a file descriptor created with
> mkfifo.
>> Then i use a command line when the game is running:
>> gst-launch-0.10 filesrc location=myfifo ! videoparse
> width=800
>> height=600 format=15 framerate=20/1 ! ffmpegcolorspace !
>> videoscale ! video/x-raw-yuv, width=800, height=600 ! videoflip
> method=5  !
>> theoraenc quality=40  ! oggmux ! gdppay ! tcpserversink
> port=12000 2>&1
 log
>>
>> The advantage using gstreamer is that you can use the
> codec
>> you want to encode the video and stream it over the web.
>>
>> The code is inside this project
> http://hg.plopbyte.net/pokme/
>>
>> Cheers, Cedric
>>
>> -- Provide OpenGL services around OpenSceneGraph and more +33 659
>> 598 614 Cedric Pinson mailto:cedric.pin...@plopbyte.net
> 
>> http://www.plopbyte.net
>>
>>
>>
>> On Mon, 2010-02-01 at 17:39 -0500, r...@sensorstar.com
>  wrote:
>>> Adrian - A way that I've used for that type of functionality
>>> is
>> through a
>>> Camera::DrawCallback subclass.  You can get the rendered
>> scene through
>>> an (osg::Image) readPixels() call and pass it out
> through
>> whatever
>>> stream you like frame by frame.  It isn't extremely fast since
>>> it
>> depends on the
>>> readPixels() call, but on a Quadro or the like it
> has always
>> been 'fast
>>> enough' fo

Re: [osg-users] Rendering 2 video stream

[Cedric Pinson]

Hi Adrian,

I am sorry i dont have a small proof of concept only the code integrated
to a project (pokme).
I guess it would need one or two day of work to setup a small example.

Cheers,
Cedric

-- 
Provide OpenGL services around OpenSceneGraph and more
+33 659 598 614 Cedric Pinson mailto:cedric.pin...@plopbyte.net
http://www.plopbyte.net


On Sat, 2010-02-06 at 11:53 +0100, Adrian Egli OpenSceneGraph (3D)
wrote:
> Hi all, 
> 
> thanks for the short answer. i am looking for a small test.cpp
> (osgviewer -> render2video -> stream) has someone still implemented
> such a demo? 
> 
> /adrian 
> 
> 2010/2/2 Cedric Pinson 
> Hi,
> I render a video game based on osg into a video stream, you
> can have an
> idea here http://plopbyte.net/?page_id=6/ you need a firefox
> plugin to
> watch it.
> 
> The basic idea works on linux with gstreamer. Dont tested on
> windows but
> because there is gstreamer, maybe it works too.
> 
> In the game code i added a thread that write image at a given
> rate. This
> file is written into a file descriptor created with mkfifo.
> Then i use a command line when the game is running:
> gst-launch-0.10 filesrc location=myfifo ! videoparse width=800
> height=600 format=15 framerate=20/1 ! ffmpegcolorspace !
> videoscale !
> video/x-raw-yuv, width=800, height=600 ! videoflip method=5  !
> theoraenc
> quality=40  ! oggmux ! gdppay ! tcpserversink port=12000 2>&1
> >>log
> 
> The advantage using gstreamer is that you can use the codec
> you want to
> encode the video and stream it over the web.
> 
> The code is inside this project http://hg.plopbyte.net/pokme/
> 
> Cheers,
> Cedric
> 
> --
> Provide OpenGL services around OpenSceneGraph and more
> +33 659 598 614 Cedric Pinson
> mailto:cedric.pin...@plopbyte.net
> http://www.plopbyte.net
> 
> 
> 
> On Mon, 2010-02-01 at 17:39 -0500, r...@sensorstar.com wrote:
> > Adrian -
> >   A way that I've used for that type of functionality is
> through a
> > Camera::DrawCallback subclass.  You can get the rendered
> scene through
> > an (osg::Image) readPixels() call and pass it out through
> whatever
> > stream you
> > like frame by frame.  It isn't extremely fast since it
> depends on the
> > readPixels() call, but on a Quadro or the like it has always
> been 'fast
> > enough' for my purposes.
> >
> >   For the video stream output, I can't offer too much advice
> because I
> > have usually been happy to work with the raw frames, but you
> can pretty
> > much tie whatever you like at that point.
> >
> > Rudy
> >
> > On Mon, Feb 01, 2010 at 03:51:27PM +0100, Adrian Egli
> OpenSceneGraph (3D) wrote:
> > > Hello all,
> > >
> > > i am looking for a library or idea how we could render osg
> into a video
> > > stream?
> > >
> > > /adrian
> > >
> > > --
> > > 
> > > Adrian Egli
> >
> > > ___
> > > osg-users mailing list
> > > osg-users@lists.openscenegraph.org
> > >
> 
> http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
> >
> > ___
> > osg-users mailing list
> > osg-users@lists.openscenegraph.org
> >
> 
> http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
> >
> 
> 
> ___
> osg-users mailing list
> osg-users@lists.openscenegraph.org
> 
> http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
> 
> 
> 
> 
> -- 
> 
> Adrian Egli


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Re: [osg-users] Rendering 2 video stream

[Adrian Egli OpenSceneGraph (3D)]

Hi all,

thanks for the short answer. i am looking for a small test.cpp (osgviewer ->
render2video -> stream) has someone still implemented such a demo?

/adrian

2010/2/2 Cedric Pinson 

> Hi,
> I render a video game based on osg into a video stream, you can have an
> idea here http://plopbyte.net/?page_id=6/ you need a firefox plugin to
> watch it.
>
> The basic idea works on linux with gstreamer. Dont tested on windows but
> because there is gstreamer, maybe it works too.
>
> In the game code i added a thread that write image at a given rate. This
> file is written into a file descriptor created with mkfifo.
> Then i use a command line when the game is running:
> gst-launch-0.10 filesrc location=myfifo ! videoparse width=800
> height=600 format=15 framerate=20/1 ! ffmpegcolorspace ! videoscale !
> video/x-raw-yuv, width=800, height=600 ! videoflip method=5  ! theoraenc
> quality=40  ! oggmux ! gdppay ! tcpserversink port=12000 2>&1 >>log
>
> The advantage using gstreamer is that you can use the codec you want to
> encode the video and stream it over the web.
>
> The code is inside this project http://hg.plopbyte.net/pokme/
>
> Cheers,
> Cedric
>
> --
> Provide OpenGL services around OpenSceneGraph and more
> +33 659 598 614 Cedric Pinson mailto:cedric.pin...@plopbyte.net
> http://www.plopbyte.net
>
>
> On Mon, 2010-02-01 at 17:39 -0500, r...@sensorstar.com wrote:
> > Adrian -
> >   A way that I've used for that type of functionality is through a
> > Camera::DrawCallback subclass.  You can get the rendered scene through
> > an (osg::Image) readPixels() call and pass it out through whatever
> > stream you
> > like frame by frame.  It isn't extremely fast since it depends on the
> > readPixels() call, but on a Quadro or the like it has always been 'fast
> > enough' for my purposes.
> >
> >   For the video stream output, I can't offer too much advice because I
> > have usually been happy to work with the raw frames, but you can pretty
> > much tie whatever you like at that point.
> >
> > Rudy
> >
> > On Mon, Feb 01, 2010 at 03:51:27PM +0100, Adrian Egli OpenSceneGraph (3D)
> wrote:
> > > Hello all,
> > >
> > > i am looking for a library or idea how we could render osg into a video
> > > stream?
> > >
> > > /adrian
> > >
> > > --
> > > 
> > > Adrian Egli
> >
> > > ___
> > > osg-users mailing list
> > > osg-users@lists.openscenegraph.org
> > >
> http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
> >
> > ___
> > osg-users mailing list
> > osg-users@lists.openscenegraph.org
> >
> http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
> >
>
> ___
> osg-users mailing list
> osg-users@lists.openscenegraph.org
> http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
>
>


-- 

Adrian Egli
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Re: [osg-users] Rendering 2 video stream

[Cedric Pinson]

Hi,
I render a video game based on osg into a video stream, you can have an
idea here http://plopbyte.net/?page_id=6/ you need a firefox plugin to
watch it.

The basic idea works on linux with gstreamer. Dont tested on windows but
because there is gstreamer, maybe it works too.

In the game code i added a thread that write image at a given rate. This
file is written into a file descriptor created with mkfifo.
Then i use a command line when the game is running:
gst-launch-0.10 filesrc location=myfifo ! videoparse width=800
height=600 format=15 framerate=20/1 ! ffmpegcolorspace ! videoscale !
video/x-raw-yuv, width=800, height=600 ! videoflip method=5  ! theoraenc
quality=40  ! oggmux ! gdppay ! tcpserversink port=12000 2>&1 >>log

The advantage using gstreamer is that you can use the codec you want to
encode the video and stream it over the web.

The code is inside this project http://hg.plopbyte.net/pokme/

Cheers,
Cedric

-- 
Provide OpenGL services around OpenSceneGraph and more
+33 659 598 614 Cedric Pinson mailto:cedric.pin...@plopbyte.net
http://www.plopbyte.net


On Mon, 2010-02-01 at 17:39 -0500, r...@sensorstar.com wrote:
> Adrian -  
>  
>   A way that I've used for that type of functionality is through a
>  
> Camera::DrawCallback subclass.  You can get the rendered scene through
>  
> an (osg::Image) readPixels() call and pass it out through whatever
> stream you  
> like frame by frame.  It isn't extremely fast since it depends on the 
>  
> readPixels() call, but on a Quadro or the like it has always been 'fast   
>  
> enough' for my purposes.  
>  
>   
>  
>   For the video stream output, I can't offer too much advice because I
>  
> have usually been happy to work with the raw frames, but you can pretty   
>  
> much tie whatever you like at that point. 
> 
> Rudy
> 
> On Mon, Feb 01, 2010 at 03:51:27PM +0100, Adrian Egli OpenSceneGraph (3D) 
> wrote:
> > Hello all,
> > 
> > i am looking for a library or idea how we could render osg into a video
> > stream?
> > 
> > /adrian
> > 
> > -- 
> > 
> > Adrian Egli
> 
> > ___
> > osg-users mailing list
> > osg-users@lists.openscenegraph.org
> > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
> 
> ___
> osg-users mailing list
> osg-users@lists.openscenegraph.org
> http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
> 


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Re: [osg-users] Rendering 2 video stream

[rudy]

Adrian -
   
  A way that I've used for that type of functionality is through a  
   
Camera::DrawCallback subclass.  You can get the rendered scene through  
   
an (osg::Image) readPixels() call and pass it out through whatever
stream you  
like frame by frame.  It isn't extremely fast since it depends on the   
   
readPixels() call, but on a Quadro or the like it has always been 'fast 
   
enough' for my purposes.
   

   
  For the video stream output, I can't offer too much advice because I  
   
have usually been happy to work with the raw frames, but you can pretty 
   
much tie whatever you like at that point. 

Rudy

On Mon, Feb 01, 2010 at 03:51:27PM +0100, Adrian Egli OpenSceneGraph (3D) wrote:
> Hello all,
> 
> i am looking for a library or idea how we could render osg into a video
> stream?
> 
> /adrian
> 
> -- 
> 
> Adrian Egli

> ___
> osg-users mailing list
> osg-users@lists.openscenegraph.org
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[osg-users] Rendering 2 video stream

[Adrian Egli OpenSceneGraph (3D)]

Hello all,

i am looking for a library or idea how we could render osg into a video
stream?

/adrian

-- 

Adrian Egli
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