Fraps is hands down the best 3D capture software I have seen to date ...
http://www.fraps.com/ although its not free its byfar the best.... works with
OpenGL and DirectX. although its limited by cpu and video card so i don't know
if it would work that well on a slow system....
-CW
________________________________
From: [EMAIL PROTECTED] on behalf of [EMAIL PROTECTED]
Sent: Wed 1/24/2007 1:23 AM
To: osg users
Subject: Re: [osg-users] osgVideo
Here comes another question;
Rendering in some systems due to the cpu rate or something else may not be as
fast as possible, that is they may not show the graphics in real-time; are
these screen capturing software programs able to handle this, may be by writing
the color buffer first rather than taking the actual screen image?
Hope still some people following this thread :))
Any ideas are appreciated..
Thanks in advance :)
On 11/10/06, [EMAIL PROTECTED] <[EMAIL PROTECTED]> wrote:
Using the route described above, you can grab an image from a frame in
a post-draw callback and write it to a file regardless of its size and aspect
ratio I think, since it is not used as a texture. Any video editing tool (not
just AVID) should be able to grab a sequence of frames and make an AVI out of
it. I am sure even Window's Movie Maker, the free one that comes with XP will
do that.
I also ran across a little snippet of code somewhere that you could use
to write out an AVI, and even asks for what compression you want using the
CODECs installed. I might be able to dig it up if you are interested. The
part about running with a constant framerate is critical too, because it takes
quite a bit of processor/disk to do it all and the animation will not be
smooth.
-- Rick
On 11/9/06, [EMAIL PROTECTED] < [EMAIL PROTECTED] <mailto:[EMAIL
PROTECTED]> > wrote:
When we're putting together promo videos, we just dump out each
frame as a
tga then use Avid to edit the sequence and turn it into a
useable video.
Admittedly we have a high-end Avid suite for this, but the
dumping of the
frames goes from the PS3, down the network and onto our PCs. We
run at
about 1 fps, but you can capture quite a lot of video by
letting it run
overnight. In our case, we have several machines capturing
different parts
of the game, then let the video guys sift through it all.
There's no reason why you couldn't set up a 512x512 render
target at the
top of your scenegraph, change the aspect ratio to that of
720x480 (3:2)
so it appears stretched (or if your card supports
non-power-of-two
textures, then you can do it at native resolution), then dump
out each
frame to an image file. I don't have any code to hand, but OSG
can cope
with that easily. When you come to encode it, you can stretch
it back to
the desired resolution. Oh, and don't forget to make your
animation
dependent on framerate (i.e. assume you're running at a constant
framerate), so the animation runs smoothly at full speed;
otherwise you'll
pick up any variation in rendering speed.
To put it all together, Avid did a home edition of their video
editing
software that was free to download and is fairly powerful, but
I can't
find it on their page, maybe they stopped doing it. If you're
on Linux,
there's a free bit of software for video editing, called
Cinelerra
(http://heroinewarrior.com/cinelerra.php3 ). If you want to
automate the
process, and you use Linux, Transcode
(http://www.transcoding.org/cgi-bin/transcode) will import
individual
frames and spit out a video in a bunch of different formats. It
might take
some time to set up to your liking, but it'll happily cope with
most
things you can throw at it; it'll even mux any audio you might
want to
use.
John Donovan
Sony Computer Entertainment Europe
http://www.scee.com <http://www.scee.com/>
[EMAIL PROTECTED] wrote on 09/11/2006 00:45:14:
> Hello,
>
> PLEAAAAAAAAASE!
> Does anybody have a way to automatically create an mpg or avi
from an
OSG
> fly through? So, that it plays back in real-time?
>
> Basically, I want to generate videos for demo purposes.
>
> ie.
> loop
> update frame
> render scene
> capture screen
> down convert screen capture to acceptable format (720x480)
> end loop
> concatenate screen captures into video file.
>
> Recommendations are also welcome.
>
> Thanks.
>
> Zach
>
> _______________________________________________
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> [email protected]
> http://openscenegraph.net/mailman/listinfo/osg-users
> http://www.openscenegraph.org/
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--
CodeSchbeke Software Solutions
Senior Project Team
Computer Engineering Department
Middle East Technical University
Ankara/TURKEY
http://senior.ceng.metu.edu.tr/2006/codeschbeke
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