[C++/Windows] Video Texture for Irrlicht (D3D,OpenGL)

vi-wer · Post by **vi-wer** » Mon May 21, 2007 11:11 pm

hello,
I always wanted to know how to play videos in Irrlicht. Now I've made my own dynamic link library that loads videos (and images) to an Irrlicht texture.

here's a short example of how it's used:

Code: Select all

IVideoTexture *tex = createVideoTexture( "test.avi", device );
tex->play();
tex->getTexture(); //returns ITexture ptr
tex->playCutscene(); // play fullscreen video
//......
tex->drop();

and here's the link (version 0.4):
http://files.filefront.com//;7570242;;/

new files can be found here (version 0.4.5):
http://files.filefront.com//;7586087;;/

[UPDATE]
and another one (version 0.5):
http://files.filefront.com//;7604391;;/

OpenGL and Direct3D are supported.

[UPDATE2]
new release, new features (v0.6):
- some bugs fixed
- capture devices supported
- callback function
- documentation
- (not compatible with previous releases)

Get it here:
http://files.filefront.com//;7762666;;/
[/UPDATE2]

gcc + msvc version and example included.

NicholasMag · Post by **NicholasMag** » Tue May 22, 2007 12:55 am

so ive tested it out and it didnt work.

When opening up the example and testing it out the video does play. Actually it does something quite weird that i cant really describe so heres the pic.

Is this because i do not have the codec?

RhavoX · Post by **RhavoX** » Tue May 22, 2007 1:22 am

Strange... I have everything in order here.. Perhaps you should update your dx files and the video driver...

NicholasMag · Post by **NicholasMag** » Tue May 22, 2007 2:48 am

my dx files are the most current and same with vid card. Ive never seen this happen before on anything but it seems to be showing parts of my desktop on it for i can see my stars from the torrent program and the blue accross the bottom for the start menu

hybrid · Post by **hybrid** » Tue May 22, 2007 7:27 am

You might try out one of the other existing video textures for Irrlicht.

vi-wer · Post by **vi-wer** » Tue May 22, 2007 8:45 am

try to replace "test.avi" with another video file or update your codec. it's coded with xvid.
I noticed problems with some codecs and uncompressed files, mostly the colors were wrong, but this ones new for me. I will check the code again.

hybrid · Post by **hybrid** » Tue May 22, 2007 9:18 am

Are you sure that the color formats are matched and you don't write into memory that does not belong to the texture?

vi-wer · Post by **vi-wer** » Tue May 22, 2007 12:44 pm

The color formats shouldn't be the problem, it supports 3 different formats (16,24,32 Bit).
If the example doesn't work, it's probably a directshow codec problem, because it works for me.
The texture isn't clean when it's created, it's filled with some random stuff. Maybe the file is loaded but can't be played (because the codec is missing). When the example is started, it plays the video without the cubes, if it doesn't the video file probably can't be rendered to the texture and shows some random stuff.

I tried to play the same video coded with different codecs but the same color format (24Bit). The first one worked fine, the other one showed the right picture but the colors were ordered as vertical green, grey and red stripes. A problem with the color order?

Another problem I just noticed: it seem not to work properly when used in fullscreen mode.
I will try to fix that.

IPv6 · Post by **IPv6** » Wed May 23, 2007 8:47 am

tried example with original test.avi but without luck - the same mess (http://shadowedlands.net/images/vid.JPG) on screen, although player plays test.avi well. But replacing test.avi with another avi file fixes the issue!!! so it seems there is a bug in obtaining codec: video player plays it well where IVideoTexture can not play it

Is it hard to change the code to support flash movies played in texture?
flash movie can hold avi in it, so it is superior feature in many ways

vi-wer · Post by **vi-wer** » Wed May 23, 2007 9:35 am

I'm not sure but aren't there two different types of codecs existing? vfw and directshow codecs. So if the directshow codec is missing, the video will not be played in the example but still could be played in a player.

What do you mean by flash movies, .flv files? If so they work for me.

I've got ffdshow and a lot of codecs installed on my system, so I have no problems playing any video file with this lib.

Ico · Post by **Ico** » Wed May 23, 2007 12:38 pm

What codec are you using for playing xvid files? Divx? Something from Ffdshow?I can't get any divx file to show within the test ap (same as the screens above). But sound is played so it should be something with the video codecs. Using a MS-RLE encoded avi everything works fine.

Maybe you could generate a "Something gone wrong; couldn't decode '<fourcc>"" being shown instead of the mess. Maybe you could add some kind of feedback and/or something like an optional "kill yourself once finished playing".

And yes, there are two possible types of standard codec types under Windows as far as I know.

vi-wer · Post by **vi-wer** » Wed May 23, 2007 5:16 pm

Ok, I've wasted some of my time and made an update to the lib

.
You can get it here:

http://files.filefront.com//;7586087;;/

Now it reports all errors and if the video file couldn't be loaded, the image will be shown instead (example only).

Further changes are:
- createVideoTexture() moved to IVideoTexture
- ms_example included
- example file loads an avi and mpg file
- ms_version works now

Hope this one works better.

@Ico:
DivX, Xvid and some other video files seems to be played using libavcodec on my computer.

Ico · Post by **Ico** » Wed May 23, 2007 7:04 pm

Spams "error: no driver or texture" but works partially (also opens an "active movie" window playing the movie but that should be a codec/driver setting and nothing affecting your program:

vi-wer · Post by **vi-wer** » Thu May 24, 2007 11:40 pm

I made a new build, this one should work now:
http://files.filefront.com//;7597533;;/

I changed the whole DShow part and added support for OpenGL.
A screenshot of how it should look like is also included now.

It's now using two buffers + one texture for every IVideoTexture, so there's a lot of space necessary for high-resolution videos. These could also decrease the speed, especially in OpenGL.

The "render to texture" part is now performing color conversion.
Unfortunately there are currently only 2 formats supported (probably that's enough). I found some code in a DX SDK sample, but it didn't work, so I had to make my own. But I don't know if it's ok or could be optimized.
If you know where I can find some information on color conversion (RGB24>>A1R5G5B5) please tell me. Couldn't find something useful in google.

hybrid · Post by **hybrid** » Fri May 25, 2007 6:57 am

Just take the Irrlicht code. You'll find all necessary stuff in CColorConversion.cpp. There is just no user interface to those functions, yet.