我需要帮助在Pyside或PyQt4上拍摄flash webvideo屏幕截图

Question

我在拍摄youtube视频页面的屏幕截图时遇到了问题。

在Pyside中我使用以下命令启用了flash功能，在Pyside浏览器上播放视频

    s.setAttribute(QWebSettings.PluginsEnabled, True)
    s.setAttribute(QWebSettings.JavascriptEnabled, True)

现在我的脚本可以打开视频嵌入式网站并播放视频但是当我尝试捕获屏幕截图时，它会在视频嵌入的位置显示黑屏。

脚本：

#!/usr/bin/env python
#-*- coding:utf-8 -*-

from PySide.QtCore import Qt, QUrl, QTimer, Slot
from PySide.QtGui import QApplication, QImage, QPainter
from PySide.QtWebKit import QWebView, QWebPage, QWebSettings
from PySide.QtNetwork import QNetworkRequest, QNetworkReply
import time, sys

class Render(QWebView):
    def __init__(self, url, filename, image_crop, translate_page, parent=None):
        super(Render, self).__init__(parent)
        self.image_crop = image_crop
        self.fileName = time.strftime("%Y%m%d%H%M%S",time.localtime()) +"_test.jpg" 
        self.finished = False

        # Settings
        s = self.page().settings()
        s.setAttribute(QWebSettings.AutoLoadImages, True)
        s.setAttribute(QWebSettings.PluginsEnabled, True)
        s.setAttribute(QWebSettings.JavascriptEnabled, True)
        s.setAttribute(QWebSettings.JavaEnabled, False)
        s.setAttribute(QWebSettings.JavascriptCanOpenWindows, False)
        s.setAttribute(QWebSettings.DeveloperExtrasEnabled, True)    

        #self.page().mainFrame().setScrollBarPolicy(Qt.Horizontal, Qt.ScrollBarAlwaysOff)
        self.page().mainFrame().setScrollBarPolicy(Qt.Vertical, Qt.ScrollBarAlwaysOff)

        self.timerScreen = QTimer()
        self.timerScreen.setInterval(10000)
        self.timerScreen.setSingleShot(True)
        self.timerScreen.timeout.connect(self.takeScreenshot)

        self.loadFinished.connect(self.timerScreen.start)
        self.load(QUrl(url)) 

    @Slot(QNetworkReply)           
    def takeScreenshot(self):        
        [x,y,width,height] = self.image_crop
        frame = self.page().mainFrame()
        size = frame.contentsSize()
        size.setWidth(1000)
        size.setHeight(2000)
        self.page().setViewportSize(size)
        image = QImage(self.page().viewportSize(), QImage.Format_ARGB32)
        painter = QPainter(image)
        frame.render(painter)
        painter.end()
        image1 = image.copy(x,y,width,height)
        image1.save(self.fileName)
        self.finished = True

def run(url, filename, image_crop, translate_page):
    app=QApplication.instance()
    if not app:
     app = QApplication(sys.argv)
    app.setApplicationName('myWindow')   
    r = Render(url, filename, image_crop, translate_page)
    r.show()
    while not r.finished:
        app.processEvents()
        time.sleep(0.01)
    return r.filepath

Screenshot_Name =  run("http://www.youtube.com/watch?v=frrvOnEZO3k", 'www.youtube.com', [0,0,1000,1000], translate_page='NO')
print Screenshot_Name

谢谢..