Scrubbing through video (frame by frame) with button pulse & RASPBERRY PI

corbinyo

Modifying a sketch that uses mouseX to scrub through a video. Looking to substitute a increasing integer value controlled by a button press.

Button is working and video on the RasPi works well.

This will work but then eventually crash with errors: Gstreamer encountered a general supporting library error GLVideo: qtedemux0: internal data stream error.

import com.pi4j.io.gpio.GpioController;
import com.pi4j.io.gpio.GpioFactory;
import com.pi4j.io.gpio.GpioPinDigitalInput;
import com.pi4j.io.gpio.PinPullResistance;
import com.pi4j.io.gpio.RaspiPin;
import gohai.glvideo.*;

GLMovie video1;
GpioController gpio;
GpioPinDigitalInput button;
int interval;

void setup() {
  size(1500, 800, P2D);
  background(0);
  interval = 0;
  gpio = GpioFactory.getInstance();
  button = gpio.provisionDigitalInputPin(RaspiPin.GPIO_02, PinPullResistance.PULL_DOWN);
  video1 = new GLMovie(this, "wheel.mp4");

  video1.pause();
}

void draw() {
  if (button.isHigh()) {
    println("pressed");
    interval++;
    println(interval);
    if (video1.available()) {
      video1.read();
    }
     float moviePosition = map(interval, 0, width, 0, video1.duration());
     print(mouseX);
    video1.jump(moviePosition);
    image(video1, 0, 0, width, height);
  }
}

corbinyo

This works, but how to make that scrubbing smooth like mouseX....? hmmmm...

import com.pi4j.io.gpio.GpioController;
import com.pi4j.io.gpio.GpioFactory;
import com.pi4j.io.gpio.GpioPinDigitalInput;
import com.pi4j.io.gpio.PinPullResistance;
import com.pi4j.io.gpio.RaspiPin;
import gohai.glvideo.*;

GLMovie video1;
GpioController gpio;
GpioPinDigitalInput button;
int interval = 0;

void setup() {
  size(1500, 800, P2D);
  background(0);

  gpio = GpioFactory.getInstance();
  button = gpio.provisionDigitalInputPin(RaspiPin.GPIO_02, PinPullResistance.PULL_DOWN);
  video1 = new GLMovie(this, "wheel.mp4");

  video1.pause();
}

void draw() {
  if (button.isHigh()) {
    println("pressed");
    interval = interval + 10;
    println(interval);
    if (video1.available()) {
      video1.read();

     float moviePosition = map(interval, 0, width, 0, video1.duration());
     print(mouseX);
    video1.jump(moviePosition);
    image(video1, 0, 0, width, height);
  }
}
}