当我下载视频时，Python如何从youtube-dl获取下载百分比

Question

我想获取python的youtube-dl模块的下载百分比，原因是我想将其放入pyqt5中的进度条中。我在 youtube-dl 的 GitHub 或其他任何地方都没有找到相关文档，有人知道吗？

我在 google/stackoverflow/GitHub 上没有找到任何成功的答案。

def downloadYoutube(self):
        self.changeText()
        # try:
        self.lblState.setText('Downloading...')

        url = self.txtURL.text()
        if 'https://www.youtube.com/watch?' not in url:
            buttonReply = QMessageBox.critical(self, 'Error! :(', "{} is an invalid URL".format(url), QMessageBox.Ok, QMessageBox.Ok)
            return
        # if 'https://youtu.be/' not in url:
        #     buttonReply = QMessageBox.critical(self, 'Error! :(', "{} is an invalid URL".format(url), QMessageBox.Ok, QMessageBox.Ok)
        #     return
        if self.radAudio.isChecked() == True:
            ydl_opts = {
                'format': 'bestaudio/best',
                'extractaudio': True,
                'audioformat': "mp3",
                'noplaylist': True,
            }
        else:
            ydl_opts = {
                'noplaylist': True,
            }
        info_dict = youtube_dl.YoutubeDL(ydl_opts).extract_info(url, download = False)
        video_id = info_dict.get("id", None)
        video_title = info_dict.get('title', None)
        self.lblTitle.setText(str(video_title))

        try:
            with youtube_dl.YoutubeDL(ydl_opts) as ydl:
                self.lblState.setText('Downloading...')
                ydl.download([url])
        except Exception as e:
            self.lblState.setText('')
            buttonReply = QMessageBox.critical(self, 'Error! :(', "Problem downloading {}\n\nError Log:\n{}".format(url, e), QMessageBox.Ok, QMessageBox.Ok)
            return

我希望百分比采用可变形式，但我似乎无法从任何地方提取百分比。

Answer 1

我将在这里分享答案，因为Marceline分享了答案的链接，但是当您想将其放入 pyqt5 进度条时，我将在这里分享它......

            ydl_opts = {
                'format': 'bestaudio/best',
                'extractaudio': True,
                'audioformat': "mp3",
                'progress_hooks': [self.my_hook],
                'noplaylist': True
            }
    def my_hook(self, d):
        if d['status'] == 'finished':
            file_tuple = os.path.split(os.path.abspath(d['filename']))
            print("Done downloading {}".format(file_tuple[1]))
        if d['status'] == 'downloading':
            p = d['_percent_str']
            p = p.replace('%','')
            self.progress.setValue(float(p))
            print(d['filename'], d['_percent_str'], d['_eta_str'])