GSVideo question

messie

in Contributed Library Questions • 2 years ago

Greetings, I am fairly new to Processing and I am not sure I understand where the libraries are placed...

I have dl'ed GSsvideo and unzipped into the Sketchbook/Library file as instructed by the page. However, I cannot run any examples, as the compiler says that it cannot find the video file, although it already exists in the /data folder where the example lies. Where does it expect me to put the video file?

Also, when I try to capture, I get the following message:

processing.app.debug.RunnerException: IllegalArgumentException: No such Gstreamer factory: v4l2src

Working under Ubuntu 10.10

Replies(9)

andres

Re: GSVideo question

2 years ago

GSVideo relies on the gstreamer plugins installed on your system to play videos. You might be missing some plugin packages. Make sure that gstreamer-plugins-good, bad and ugly are installed

daveattac..

Re: GSVideo question

2 years ago

Hi,

I'm likewise new to processing, and have a similar problem...

I'm using Processing 1.5.1 and GSVideo 0.9 on Ubuntu 11.04, and have gstreamer0.10-plugins good, bad and ugly (with multiverse variants of bad and ugly) installed.

I can get video from my camera using `gst-launch-0.10 v4l2src ! ffmpegcolorspace ! video/x-raw-rgb, width=640, height=480, bpp=32, depth=24 ! ximagesink`, but running GettingStartedCaptureLinux gives this:

GSVideo version: 0.9
Exception in thread "Animation Thread" java.lang.IllegalArgumentException: No such Gstreamer factory: v4l2src
    at org.gstreamer.ElementFactory.makeRawElement(ElementFactory.java:219)
    at org.gstreamer.ElementFactory.make(ElementFactory.java:211)
    at codeanticode.gsvideo.GSCapture.initGStreamer(Unknown Source)
    at codeanticode.gsvideo.GSCapture.initPlatform(Unknown Source)
    at codeanticode.gsvideo.GSCapture.<init>(Unknown Source)
    at GettingStartedCaptureLinux.setup(GettingStartedCaptureLinux.java:57)
    at processing.core.PApplet.handleDraw(Unknown Source)
    at processing.core.PApplet.run(Unknown Source)
    at java.lang.Thread.run(Thread.java:662)

That happens with either one of these cam constructors:
cam = new GSCapture(this, 640, 480);
cam = new GSCapture(this, 640, 480, "/dev/video0");

Any suggestions how to get it working?

Cheers,
Dave.

andres

Re: GSVideo question

2 years ago

What happens if you try capture through a GSPipeline object:

pipeline = new GSPipeline(this, " v4l2src ! ffmpegcolorspace ! video/x-raw-rgb, width=640, height=480, bpp=32, depth=24");

daveattac..

Re: Re: GSVideo question

2 years ago

Hi. It gives a similar error, but with org.gstreamer.GstException, highlighting pipeline.play() - rather than java.lang.IllegalArgumentException with cam = new GSCapture(...) highlighted.

Here's the code & error:

import codeanticode.gsvideo.*;

GSPipeline pipeline;

void setup() {
size(640, 480);
pipeline = new GSPipeline(this, "v4l2src ! ffmpegcolorspace ! video/x-raw-rgb, width=640, height=480, bpp=32, depth=24");
pipeline.play();
}

void draw() {
if (pipeline.available() == true) {
pipeline.read();
image(pipeline, 0, 0);
}
}

GSVideo version: 0.9
Exception in thread "Animation Thread" org.gstreamer.GstException: no element "v4l2src"
    at org.gstreamer.Pipeline.launch(Pipeline.java:130)
    at codeanticode.gsvideo.GSPipeline.initPipeline(Unknown Source)
    at codeanticode.gsvideo.GSPipeline.play(Unknown Source)
    at sketch_jun01a.setup(sketch_jun01a.java:30)
    at processing.core.PApplet.handleDraw(Unknown Source)
    at processing.core.PApplet.run(Unknown Source)
    at java.lang.Thread.run(Thread.java:662)

mrfidget

Re: GSVideo question

2 years ago

Hello,

I am experiencing the same issue.

Using Xubuntu 11.04, 64 bit. I have installed the plugins for the 32 bit version too using getlibs with no change (I did something similar to what is described in this post: https://lists.secondlife.com/pipermail/opensource-dev/2011-February/005833.html)

The pipeline commands run fine (the webcam image shows) when using a terminal command like:

gst-launch-0.10 v4l2src ! ffmpegcolorspace ! video/x-raw-rgb, width=640, height=480, bpp=32, depth=24 ! ximagesink

or even something as simple as

gst-launch-0.10 v4l2src ! ximagesink

The same commands fail when used in GSPipeline, as described above.

Does this library work in any Linux 64 bit distro at all? Also, could anyone list the exact dependencies this library and gstreamer need on Linux? My feeling is that something is missing.

Any other idea I could use to fix this?

Thanks.

daedalus12

Re: GSVideo question

2 years ago

Heya;

I've been wrestling with this too, but just got it to work on my 64-bit system. You have to redirect processing to use native 64 java installation... here are the instruction I (mostly) followed: http://cpbotha.net/2010/03/04/processing-gsvideo-nyartoolkit-on-linux-x86_64/.

For posterity, here are the exact steps I took:

Install native 64-bit Sun JDK

sudo apt-get install sun-java6-jdk

Install jogl libraries

sudo apt-get install libjogl-java

Install all of gstreamer

sudo apt-get install gstreamer*

Download processing, then navigate to the directory. Remove the java directory and link to your native installation.

cd processing
rm -r java
ln -s /usr/lib64/jvm/java-6-sun-1.6.0.24 java

Replace links in the OpenGL libraries as well.

cd modes/java/libraries/opengl/library/linux64 (thanks mrfidget for the correction)
rm libgluegen-rt.so libjogl_awt.so libjogl.so
ln -s /usr/lib/jni/libgluegen-rt.so
ln -s /usr/lib/jni/libjogl_awt.so
ln -s /usr/lib/jni/libjogl.so

GSVideo examples worked for me after that.

Disclaimer: I don't really know what I'm doing, so take all this with a grain of salt. But this solved the 64-bit problem for me.

Cheers!

daveattac..

Re: Re: GSVideo question

2 years ago

Excellent, thanks Daedalus!

mrfidget

Re: GSVideo question

2 years ago

Daedalus they should build a monument for you!

The procedure works and now GSVideo behaves normally both with the capture examples for Linux and the GPSPipeline class.

One thing you might want to amend is the path to the libraries to remove, when replacing the links in the OpenGL section , in my case I had to change it to

cd modes/java/libraries/opengl/library/linux64

Perhaps people with a 32bit distro might want to cd to the linux32 directory and do what you suggest, as the libraries we remove are there too.

Thanks again!

andreasko..

Re: GSVideo question

5 months ago

And what about Processing-2.08b?

Since Version 2 the OpenGL is part if core ......

" OpenGL is now part of core – the OpenGL library is now built into the core, no need to include it as a separate library. This simplifies things (enormously), and brings better parity with other platforms like Android. This makes exported applications larger, but the benefits are worth it."

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