研究PySide与youtube_dl结合实现视频下载，抽丝剥蚕，步步维艰，却也颇有意思。
记录初始心得。界面以PySide之Qt编写，调用youtube_dl下载，回调出下载进度，代码如下：
# encoding: utf-8 from __future__ import unicode_literals
from PySide.QtGui import *
from PySide.QtCore import *
from main_ui import *
import youtube_dl
import threading class MainWindow(QMainWindow, Ui_Main):
update_info = Signal(dict) def __init__(self, parent=None):
super(MainWindow, self).__init__(parent) self.setupUi(self)
self.btnGet.setEnabled(False)
self.txtUrl.setText('https://www.youtube.com/watch?v=dvSLaHj9VVM')
self.update_info.connect(self.safe_hook_progress) def hook_progress(self, d):
self.update_info.emit(d) def safe_hook_progress(self, d):
info = ''
if d['status'] == 'downloading':
info = 'downloaded_bytes: ' + str(d['downloaded_bytes']) + ', elapsed: ' + str(
d['elapsed']) + ', speed: ' + str(d['speed']) + ', filename: ' + d['filename'];
elif d['status'] == 'finished':
info = '\r\ncomplete!'
self.txtUrl.setEnabled(True)
self.btnGet.setEnabled(True)
if info != '':
self.txtInfo.append(info)
# self.txtInfo.setText(info) def get_opts(self):
ydl_opts = {
'format': 'bestvideo',
# 'outtmpl': os.path.join(app.config['VIDEOS_FOLDER'], '%(id)s.%(ext)s'),
# 'logger': MyLogger(),
'progress_hooks': [self.hook_progress],
}
return ydl_opts def download(self, url):
print 'download......', url
if url.strip() == '':
return ydl = youtube_dl.YoutubeDL(self.get_opts())
ydl.download([url]) @Slot()
def on_txtUrl_returnPressed(self):
if self.btnGet.isEnabled():
self.btnGet.click() @Slot(str)
def on_txtUrl_textChanged(self, s):
self.btnGet.setEnabled(s != '') @Slot()
def on_btnGet_clicked(self):
self.txtUrl.setEnabled(False)
self.btnGet.setEnabled(False)
self.txtInfo.setText('')
t = threading.Thread(target=MainWindow.download, args=(self, self.txtUrl.text()), name='thread')
t.start()
效果如图所示：
参考：