Question

当我尝试导出处理视频的Processing小程序在浏览器中工作时，我遇到了一个经常出现的问题。这是一个简单的应用程序，可以停止，播放和暂停.mp4视频。当我使用Processing IDE运行它时，它工作得很好。但是执行我导出时生成的index.html，视频框变为空白，没有任何反应，我在控制台中收到此错误：

Exception in thread "Animation Thread" java.lang.NoClassDefFoundError: Could not initialize class quicktime.QTSession
    at processing.video.Movie.init(Unknown Source)
    at processing.video.Movie.<init>(Unknown Source)
    at processing.video.Movie.<init>(Unknown Source)
    at sketch_nov14a.setup(sketch_nov14a.java:31)
    at processing.core.PApplet.handleDraw(Unknown Source)
    at processing.core.PApplet.run(Unknown Source)
    at java.lang.Thread.run(Unknown Source)

也许这是一个已知问题，但我仍然无法找到解决方案：BUG 44

这就是代码：

import processing.video.*;

Movie theMov; 
boolean isPlaying;
boolean isLooping;


void setup() { 
  size(600,400,P2D);
  theMov = new Movie(this, "http://www.sinopsedofilme.com.br/processing/video2.mp4");
  /* only use 1 of the following options */
  theMov.play();  //plays the movie once
  theMov.loop();  //plays the movie over and over
  isPlaying = true;
  isLooping = true;

}

void draw() { 
  image(theMov, 0,0); 
} 

void movieEvent(Movie m) { 
  m.read(); 
} 

void keyPressed() {
  if (key == 'p') {
    // toggle pausing
    if (isPlaying) {
      theMov.pause();
    } else {
      theMov.play();
    }
    isPlaying = !isPlaying;

  } else if (key == 'l') {
    // toggle looping
    if (isLooping) {
      theMov.noLoop();
    } else {
      theMov.loop();
    }
    isLooping = !isLooping;

  } else if (key == 's') {
    // stop playing
    theMov.stop();
    isPlaying = false;

  } else if (key == 'j') {
    // jump to a random time
    theMov.jump(random(theMov.duration()));
  }
}

Answer 1

Debugging tips

导出视频处理视频小程序

1 个答案: