GSVideo Windows application runs very shaky, any ideas?

mrweix

GSVideo Windows application runs very shaky, any ideas?

in Contributed Library Questions • 2 years ago

Dear GSVideo community,

thanks to all your posts I managed to export a processing application for Mac and Windows (copying the gstreamer folders accordingly)

Now the Mac Application runs very smoothly, but the Windows application is very shaky and even with a small video very bad.

I used the HDMovie example, and to see the error you can download the applications here:
http://www.klein-bottle-film.com/HDMovie.zip

I also tried the normal Movie example but with the same problem. Any help is much appreciated!

Replies(4)

mrweix

Re: GSVideo Windows application runs very shaky, any ideas?

2 years ago

This was the code I used.... any ideas would help me!

import processing.opengl.*;
import codeanticode.glgraphics.*;
import codeanticode.gsvideo.*;

GSMovie mov;
GLTexture tex;

int fcount, lastm;
float frate;
int fint = 3;

void setup() {
size(640, 480, GLConstants.GLGRAPHICS);
frameRate(90);

GSVideo.localGStreamerPath = sketchPath+"/gstreamer/windows32";
mov = new GSMovie(this, sketchPath("data/station.mov"));

// Use texture tex as the destination for the movie pixels.
tex = new GLTexture(this);
mov.setPixelDest(tex);

// This is the size of the buffer where frames are stored
// when they are not rendered quickly enough.
tex.setPixelBufferSize(10);
// New frames put into the texture when the buffer is full
// are deleted forever, so this could lead dropeed frames:
tex.delPixelsWhenBufferFull(false);
// Otherwise, they are kept by gstreamer and will be sent
// again later. This avoids loosing any frames, but increases
// the memory used by the application.

mov.loop();

background(0);
noStroke();
}

void draw() {
// Using the available() method and reading the new frame inside draw()
// instead of movieEvent() is the most effective way to keep the
// audio and video synchronization.
if (mov.available()) {
    mov.read();
    // putPixelsIntoTexture() copies the frame pixels to the OpenGL texture
    // encapsulated by the tex object.
    if (tex.putPixelsIntoTexture()) {

      // Calculating height to keep aspect ratio.
      float h = width * tex.height / tex.width;
      float b = 0.5 * (height - h);

      image(tex, 0, b, width, h);

      String info = "Resolution: " + mov.width + "x" + mov.height +
                    " , framerate: " + nfc(frate, 2) +
                    " , number of buffered frames: " + tex.getPixelBufferUse();

      fill(0);
      rect(0, 0, textWidth(info), b);
      fill(255);
      text(info, 0, 15);

      fcount += 1;
      int m = millis();
      if (m - lastm > 1000 * fint) {
        frate = float(fcount) / fint;
        fcount = 0;
        lastm = m;
      }
    }
}
}

andres

Re: GSVideo Windows application runs very shaky, any ideas?

1 years ago

Hello, what version of gsvideo are you using? Does the video play fine when you run the sketch from inside Processing?

mrweix

Re: Re: GSVideo Windows application runs very shaky, any ideas?

1 years ago

I am using GSVideo 1.0

The video plays fine inside the sketch on Mac, I am not sure how it is inside the sketch on Windows since I am developing on Mac. By playing around with the frameRate I got it to play more stable also on Windows, but then for some reason the sound didn't playback....not sure whats the problem.

andres

Re: GSVideo Windows application runs very shaky, any ideas?

1 years ago

I'm not sure either. You can try using the volume() method:

movie.volume(0.5);

(values range between 0 and 1). Maybe this helps.

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