我有一个视频,我按时间间隔从中获取一些片段,我想做以下事情:
我该怎么做呢?
我尝试使用例如pause
,stop
等......简直就是一切,但都没有奏效。
我的python版本:3.6.0
和PyQt:5.6
视频播放器文件(由于它太长而导致的repl链接):
https://repl.it/repls/SuperBrownSoftware
(只需将其复制到您的IDE中)
这是我应该运行的代码:
from PyQt5 import QtCore, QtGui, QtWidgets, QtMultimedia
from PyQt5.QtWidgets import *
import sys
from pyqtvideo2_copy import *
app = QtWidgets.QApplication(sys.argv)
video = VideoWidget()
w = QtWidgets.QWidget()
w.fr = QtWidgets.QGridLayout(w)
w.bt = QtWidgets.QPushButton()
w.fr.addWidget(w.bt)
w.player_=Player(sys.argv[1:])
w.fr.addWidget(w.player_)
print(w)
video.activateWindow()
def clicked():
l=[[2000,4000],[10000,15000]]
for i in l:
w.player_.setPosition(i[0])
w.player_.player.pause()
w.player_.player.play()
w._end=i[1]
w.player_.player.positionChanged.connect(on_positionChanged)
def on_positionChanged(position):
if w.player_.player.state() == QtMultimedia.QMediaPlayer.PlayingState:
if position > w._end:
w.player_.player.stop()
def except_hook(cls, exception, traceback):
sys.__excepthook__(cls, exception, traceback)
w.bt.clicked.connect(clicked)
w.show()
sys.excepthook=except_hook
sys.exit(app.exec_())
我现在得到了ekhumoro的答案,所以我正在使用这种结构设置:
class Ui_MainWindow(QMainWindow):
def setupUi(self, MainWindow):
...
def retranslateUi(self, MainWindow):
...
self.player.positionChanged.connect(self.handlePositionChanged)
self.player.mediaStatusChanged.connect(self.handleMediaStateChanged)
...
def videoclips(self):
self.w=QWidget()
g=QGridLayout(self.w)
g.setContentsMargins(0,0,0,0)
d=TableWidget(self.df2,self.clicked)
g.addWidget(d)
self.w.show()
def clicked(self,item):
self.w.close()
self.addMedia(ast.literal_eval(item.text()))
def addMedia(self, clips):
self._index = -1
self._clips = clips
def playNext(self):
self.player.player.pause()
self._index += 1
if 0 <= self._index < len(self._clips):
self.player.player.setPosition(self._clips[self._index][0])
self.player.player.play()
def handlePositionChanged(self, pos):
if (0 <= self._index < len(self._clips) and
pos > self._clips[self._index][1] and
self.player.player.state() == QtMultimedia.QMediaPlayer.PlayingState):
self.playNext()
def handleMediaStateChanged(self, state):
if state == QtMultimedia.QMediaPlayer.LoadedMedia:
self.playNext()
我将ekhumoro的答案函数复制到我的代码中,然后在self.player.positionChanged.connect(self.handlePositionChanged)
中添加了两行:self.player.mediaStatusChanged.connect(self.handleMediaStateChanged)
和retranslateUi
但这似乎没有用,我觉得我做错了。
这给了我一个错误:
AttributeError: 'Ui_MainWindow' object has no attribute '_index'
一种方法是创建一个简单的队列,然后等待每个剪辑完成,然后再移动到队列中的下一个项目。下面是一个简单的演示,展示如何实现这一目标。希望应该很容易看到如何使其适应您自己的代码。
import sys
from PyQt5 import QtCore, QtWidgets, QtMultimedia, QtMultimediaWidgets
class Window(QtWidgets.QWidget):
def __init__(self):
super().__init__()
self.video = QtMultimediaWidgets.QVideoWidget()
self.player = QtMultimedia.QMediaPlayer()
self.player.setVideoOutput(self.video)
layout = QtWidgets.QVBoxLayout(self)
layout.addWidget(self.video)
self.player.positionChanged.connect(self.handlePositionChanged)
self.player.mediaStatusChanged.connect(self.handleMediaStateChanged)
def addMedia(self, path, clips):
self._index = -1
self._clips = clips
self.player.setMedia(
QtMultimedia.QMediaContent(QtCore.QUrl.fromLocalFile(path)))
def playNext(self):
self.player.pause()
self._index += 1
if 0 <= self._index < len(self._clips):
self.player.setPosition(self._clips[self._index][0])
self.player.play()
def handlePositionChanged(self, pos):
if (0 <= self._index < len(self._clips) and
pos > self._clips[self._index][1] and
self.player.state() == QtMultimedia.QMediaPlayer.PlayingState):
self.playNext()
def handleMediaStateChanged(self, state):
if state == QtMultimedia.QMediaPlayer.LoadedMedia:
self.playNext()
app = QtWidgets.QApplication(sys.argv)
window = Window()
window.addMedia(sys.argv[1], [[2000, 4000], [10000, 15000]])
# window.addMedia(sys.argv[1], [[10000, 20000], [40000, 50000]])
window.show()
sys.exit(app.exec_())