libvlc“VLC无法打开MRL'C:\ Users \ Public \ Videos \ Sample Videos \ Wildlife.mwv'”

时间:2013-03-11 18:17:44

标签: python vlc pyside libvlc

我正在编写一个与VLC接口的PySide Python应用程序。在Ubuntu上运行得很好,但是当我移动到Windows时,我甚至无法让VLC打开视频文件。

我将VideoLAN PyQt示例(http://git.videolan.org/?p=vlc/bindings/python.git;a=blob;f=examples/qtvlc.py;h=34aeedce116e05f575eb0ebffdacf8f06db80402;hb=HEAD)修剪成一个窗口和视频播放器,试图弄清楚出了什么问题,但仍然会出现此错误。即使使用打开文件对话框中的返回,我仍然会得到相同的错误。

以下是VideoLAN示例的精简版:

import sys
import vlc
import user
from ctypes import pythonapi, c_void_p, py_object
from PySide import QtGui, QtCore

class Player(QtGui.QMainWindow):
  def __init__(self, master = None):
    QtGui.QMainWindow.__init__(self, master)

    self.setWindowTitle('Media Player')

    self.instance = vlc.Instance()
    self.mediaplayer = self.instance.media_player_new()

    self.createUI()

  def createUI(self):
    self.widget = QtGui.QWidget(self)
    self.setCentralWidget(self.widget)

    self.videoframe = QtGui.QFrame()
    self.palette = self.videoframe.palette()
    self.palette.setColor(QtGui.QPalette.Window,
                          QtGui.QColor(0, 0, 0))
    self.videoframe.setPalette(self.palette)
    self.videoframe.setAutoFillBackground(True)

    self.vboxlayout = QtGui.QVBoxLayout()
    self.vboxlayout.addWidget(self.videoframe)

    self.widget.setLayout(self.vboxlayout)

    self.OpenFile()

  def OpenFile(self, filename = None):
    if filename is None:
      filename = QtGui.QFileDialog.getOpenFileName(self, 'Open File', user.home)
      filename = filename[0]
    if not filename:
      return

    print filename
    self.media = self.instance.media_new(unicode(filename))
    self.mediaplayer.set_media(self.media)

    self.media.parse()
    self.setWindowTitle(self.media.get_meta(0))

    if sys.platform == 'linux2':
      self.mediaplayer.set_xwindow(self.videoframe.winId())
    elif sys.platform == 'win32':
      pythonapi.PyCObject_AsVoidPtr.restype = c_void_p
      pythonapi.PyCObject_AsVoidPtr.argtypes = [py_object]
      hWnd = pythonapi.PyCObject_AsVoidPtr(self.videoframe.winId())
      self.mediaplayer.set_hwnd(hWnd)
    elif sys.platform == 'darwin':
      self.mediaplayer.set_agl(self.videoframe.windId())

    self.mediaplayer.play()

if __name__ == '__main__':
  app = QtGui.QApplication(sys.argv)
  player = Player()
  player.show()
  player.resize(640, 480)

  sys.exit(app.exec_())

1 个答案:

答案 0 :(得分:2)

如果要打开文件(而不是流或其他来源),libVLC要求您使用“file:///”启动文件路径,当在Windows上的python中使用文件路径时,需要使用\ in为了逃避\(a la \')。

因此,用于调用文件的字符串应如下所示: 'file:/// C:\ Users \ Public \ Videos \ Sample Videos \ Wildlife.mwv'

另一个注意事项:如果可以的话,最好从文件路径中取出任何空格(即“样本视频”)