Hi Dieter,
did you actually change your webcam settings to default the webcam
to use 640 x 480 by default (prior to running 0:3.live)?
> Did you see osgmovie with a higher resolution (live stream) on
> windows ? Any other hints?
Yes my webcam will do 1024x768 and various downward resolutions ok.
This is using AbstractPlane wrapper and setting the camera resolution
up in advance via it's settings prior to running osgmovie as said.
My capture card does full 1080p via HDMI and this is also captured
successfully via osgmovie as well as various flavours of PAL via
composite in eg 576i. This card has a native QuickTime driver though
for Windows (rare) and is accessed without the DirectShow wrapper.
As far as any hints I have found that the AbstractPlane wrapper will
sometimes not offer ALL the resolutions of the DirectShow devices and
only a subset? The plug-in was intended for native QuickTime drivers
on OSX/Windows and the fact it works via the AbstractPlane wrapper is
just a bonus but is an indirection that the OSG or the plug-in has
any control over regarding problems.
Let me know if you have any success.
Cheers,
Colin.
Dieter Pfeffer wrote:
Hi Colin
thanks for your answer - but I have no success with a higher resolution.
When I use the 0:3.live which matches a resolution of 640x480, I only see a
white rectangle though the width and height of the image is 640 x 480 (in
debugger). No other locking application is running. I can use 320x240 or
smaller resolutions like 160x120.
When I start the application with 0:3.live (640x480) the webcam is turned
off in osgDB::readImageFile(...) and I can't see the output of fps_counter
in QuicktimeLiveImageStream.cpp and no error message - with 320x240 I see
the output of the fps_counter.
Did you see osgmovie with a higher resolution (live stream) on windows ?
Any other hints?
Thanks
Dieter
-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] Behalf Of Colin
Dunlop
Sent: Wednesday, 18 June, 2008 23:09
To: OpenSceneGraph Users
Subject: Re: [osg-users] Quicktimeplugin livestreaming
documentation/examples
Hi Dieter,
you sometimes have to change the resolution of your webcam via it's
own preference settings. Then you can use this new resolution via the
corresponding x:y.live that matches the --devices output equal to your
new resolution. Basically it's the same for the capture cards and you
can't (via OSG right now) alter some of the card/webcam settings
programatically. Hope this makes sense. Also make sure that you close
any webcam apps/previews/setting priot to running osgmovie as you
will likely get locked out as there seems to be some OS thing going
on restricting one app to the hardware at any one time wrt the
AbstractPlane DirectShow/QT wrapper.
Cheers,
Colin.
Dieter Pfeffer wrote:
Hi
I am using osgmovie like Colin has described to visualise a live stream
from
a webcam (and it works very good) - but I can only see a resolution of
320x240; is there a limitation to this resolution ? - is there any way to
realise a higher resolution ?
Using Windows XP and OSG 2.3.6
Thanks
Dieter
Unclassified Mail
-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] Behalf Of Colin
Dunlop
Sent: Tuesday, 08 April, 2008 17:07
To: OpenSceneGraph Users
Subject: Re: [osg-users] Quicktime plugin livestreaming
documentation/examples
Hi Adrian,
I've not documented anything on the wiki yet but below is how
the result was achieved on Windows XP. See my previous post for
any more detail. The demo/example is really just a quad with
your live feed playing - so a I've just tweaked osgmovie here
to force load the plug-in from a ".live" association and then
interpret the file basename to get a device and input ID -
ugly but working...
0. If you have NO QuickTime driver for your device then install
<http://www.abstractplane.com/products/vdig.jsp>
Use the latest version and do the manual install from the zip.
You will jave to live with the demo mode or fork out some $$$.
If your capture device has a QuickTime driver then you do not
need this VDIG for Windows thing eg BlackMagic Intensity Pro.
1. Modify the osgmovie.cpp and make sure that the .live
extension is associated with the osgdb_qt plugin:
osgDB::Registry::instance()->addFileExtensionAlias("live","qt");
2. run osgmovie --devices
If you have any live feed devices associated with a QuickTime
driver then this will spit out some command line options and
associations.
It will also spit out any pseudo Windows VDIG wrapped Direct
Show devices in the same way
eg: ...
4:1.live Blackmagic HDTV 720 Intensity HDTV 720p 59.94
...
1:4.live Hauppauge WinTV 418 Video Capture
(4&E384A6E&0&48F0) S-Video 3 UYVY @ 720x480
...
3. run osgmovie and pass it a "pseudo" file name that will be
translated by the plug-in to point at an input device eg
$ osgmovie x:y.live
This will force load the osgdb_qt plug-in, and then attempt to
decode the x:y.live where x and y are the input and channel of
your input - eg 5:0.live
I plan to submit to Robert an osgvideo example which wraps some
of this up a bit better.
Cheers,
Colin.
Adrian Egli OpenSceneGraph (3D) wrote:
Hi
any demo / example ?
regards
2008/4/3, Mike Greene <[EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]>>:
Colin,
Success! Using the later version of VDIG that you referenced, I
was
able to get a live stream to work with osgmovie.
I'm using a KOCOM camera running video through a Canopus ADVC 110 A/D
video convertor into a firewire cable.
This is on Windows XP, OSG 2.3.5, Visual Studio 2005 debug, Quicktime
SDK 7.3.
Mike Greene
_______________________________________________
osg-users mailing list
[email protected]
<mailto:[email protected]>
http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
--
********************************************
Adrian Egli
------------------------------------------------------------------------
_______________________________________________
osg-users mailing list
[email protected]
http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
_______________________________________________
osg-users mailing list
[email protected]
http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
_______________________________________________
osg-users mailing list
[email protected]
http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
_______________________________________________
osg-users mailing list
[email protected]
http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
_______________________________________________
osg-users mailing list
[email protected]
http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
_______________________________________________
osg-users mailing list
[email protected]
http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
