Selenium中如何暂停内嵌在iframe中的YouTube视频？

问题原因 #

播放视频后，初始的ytp-large-play-button大按钮会被隐藏，取而代之的是一个通用的播放/暂停切换按钮，类名是ytp-play-button。

解决方案 #

定位这个切换按钮并点击即可实现暂停，修改后的代码如下：

driver.get('https://demo.guru99.com/test/guru99home/')
frame1 = driver.find_element(By.XPATH,"//iframe[@src='https://www.youtube.com/embed/RbSlW8jZFe8']")
driver.switch_to.frame(frame1)

import time
time.sleep(2)
# 点击大播放按钮开始播放
Ytbutton = driver.find_element(By.XPATH, "//button[@class='ytp-large-play-button ytp-button ytp-large-play-button-red-bg']")
Ytbutton.click()
time.sleep(2)
# 定位播放/暂停切换按钮并点击实现暂停
pause_button = driver.find_element(By.XPATH, "//button[@class='ytp-play-button ytp-button']")
pause_button.click()

补充优化方案 #

• 模拟键盘空格键控制播放/暂停（需导入Keys类）：

  from selenium.webdriver.common.keys import Keys
  # 定位视频元素并发送空格键
  video = driver.find_element(By.XPATH, "//video[@class='video-stream html5-main-video']")
  video.send_keys(Keys.SPACE)
  

• 用显式等待替代sleep()提升稳定性：

  from selenium.webdriver.support.ui import WebDriverWait
  from selenium.webdriver.support import expected_conditions as EC
  
  # 等待大播放按钮可点击
  Ytbutton = WebDriverWait(driver, 10).until(
      EC.element_to_be_clickable((By.XPATH, "//button[@class='ytp-large-play-button ytp-button ytp-large-play-button-red-bg']"))
  )
  Ytbutton.click()
  # 等待暂停按钮可点击
  pause_button = WebDriverWait(driver, 10).until(
      EC.element_to_be_clickable((By.XPATH, "//button[@class='ytp-play-button ytp-button']"))
  )
  pause_button.click()
  

内容的提问来源于stack exchange，提问作者Mr Andreson