Question

下面是我正在使用的测试脚本，以便为PyQt5播放示例视频。不幸的是，加载视频后不久，mediaPlayer mediaStatus切换到代码8（InvalidMedia）我也尝试使用本地版本的.mp4，但无济于事。我尝试过其他文件，但无法进一步诊断问题。我在Stack Overflow的其他地方发现了媒体播放器的这种实现，所以如果有人知道一种完全不同的实现方式，我对此持开放态度。

此外，我已经测试过＆＃34;教程＆＃34;我的.mp4上的视频播放器，但也没有播放任何内容。 Github

from PyQt5.QtCore import *
from PyQt5.QtGui import *
from PyQt5.QtWidgets import *
from PyQt5.QtMultimedia import *
from PyQt5.QtMultimediaWidgets import *
import glob


class MainWindow(QMainWindow):
    def __init__(self):
        super(MainWindow, self).__init__()
        self.setWindowTitle('Navon test')
        self.setWindowFlags(Qt.FramelessWindowHint)
        # exit option for the menu bar File menu
        self.exit = QAction('Exit', self)
        self.exit.setShortcut('Ctrl+q')
        # message for the status bar if mouse is over Exit
        self.exit.setStatusTip('Exit program')
        # newer connect style (PySide/PyQT 4.5 and higher)
        self.exit.triggered.connect(app.quit)
        self.setWindowIcon(QIcon('icon.ico'))
        self.centralwidget = VideoPlayer()
        self.setCentralWidget(self.centralwidget)

    def keyPressEvent(self, e):
        player = self.centralwidget.mediaPlayer
        print('state: ' + str(player.state()))
        print('mediaStatus: ' + str(player.mediaStatus()))
        print('error: ' + str(player.error()))
        if e.key() == Qt.Key_L:
            print('loading')
            self.centralwidget.load()
        # update : missed () here
        if e.key() == Qt.Key_P:
            print('playing')
            self.centralwidget.play()


class VideoPlayer(QWidget):
    def __init__(self, parent=None):
        super(VideoPlayer, self).__init__(parent)
        self.mediaPlayer = QMediaPlayer(None, QMediaPlayer.VideoSurface)
        self.videoItem = QGraphicsVideoItem()
        self.videoItem.setSize(QSizeF(640, 480))
        scene = QGraphicsScene(self)
        graphicsView = QGraphicsView(scene)
        scene.addItem(self.videoItem)
        layout = QVBoxLayout()
        layout.addWidget(graphicsView)
        self.setLayout(layout)
        self.mediaPlayer.setVideoOutput(self.videoItem)

    def load(self):
        local = QUrl('http://clips.vorwaerts-gmbh.de/big_buck_bunny.mp4')
        self.mediaPlayer.setMedia(QMediaContent(local))

    def play(self):
        self.mediaPlayer.play()


if __name__ == '__main__':
    import sys

    app = QApplication(sys.argv)
    player = MainWindow()
    player.show()
    sys.exit(app.exec_())

Answer 1

首先，附上我的代码。

from PyQt5.QtCore import *
from PyQt5.QtGui import *
from PyQt5.QtWidgets import *
from PyQt5.QtMultimedia import *
from PyQt5.QtMultimediaWidgets import *

class VideoPlayer(QWidget):
    def __init__(self, parent=None):
        super(VideoPlayer, self).__init__(parent)
        videoItem = QGraphicsVideoItem()
        videoItem.setSize(QSizeF(640, 480))
        scene = QGraphicsScene(self)
        scene.addItem(videoItem)
        graphicsView = QGraphicsView(scene)
        layout = QVBoxLayout()
        layout.addWidget(graphicsView)
        self.setLayout(layout)
        self.mediaPlayer = QMediaPlayer(None, QMediaPlayer.VideoSurface)
        self.mediaPlayer.setVideoOutput(videoItem)

    def keyPressEvent(self, e):
        print('state: ' + str(self.mediaPlayer.state()))
        print('mediaStatus: ' + str(self.mediaPlayer.mediaStatus()))
        print('error: ' + str(self.mediaPlayer.error()))
        if e.key() == Qt.Key_L:
            print('loading')
            self.load()
        if e.key() == Qt.Key_P:
            print('playing')
            self.mediaPlayer.play()

    def load(self):
        local = QUrl.fromLocalFile('C:\\Users\\tank.sui\\Videos\\Wildlife.wmv')
        media = QMediaContent(local)
        self.mediaPlayer.setMedia(media)

if __name__ == '__main__':
    import sys
    app = QApplication(sys.argv)
    player = VideoPlayer()
    player.show()
    sys.exit(app.exec_())

查看代码后，只需在下面列出根本原因。QUrl.fromLocalFile

local = QUrl.fromLocalFile('C:\\Users\\tank.sui\\Videos\\Wildlife.wmv')

更新@三分之二千〇一十七/ 15

要支持多种音频/视频格式，您需要安装相应的解码器。

LAVFilters，我推荐它，您可以从RELEASE下载并安装它。

在WIndows上使用QMediaPlayer与PyQt5时出错

1 个答案: