pyqt之视频播放器

from PyQt5.QtCore import QUrl, QModelIndex
from PyQt5.QtWidgets import *
from PyQt5.QtMultimediaWidgets import QVideoWidget
from PyQt5.QtMultimedia import QMediaPlayer, QMediaContent, QMediaPlaylist
from PyQt5.QtGui import QDragEnterEvent, QDropEvent, QPixmap, QCursor
import sys



class video_player(QWidget):
    def __init__(self):
        super().__init__(<