02 爬取视频

''''''
'''
视频选项：
    1、梨视频
'''

import requests

video_url = 'https://www.pearvideo.com/video_1570302' #梨视频网址
response = requests.get(url=video_url)
print(response.text)


#往视频源地址发送请求
response = requests.get('https://video.pearvideo.com/mp4/adshort/20190625/cont-1570302-14057031_adpkg-ad_hd.mp4')


#打印二进制流，比如视频、图片等数据
print(response.content)


#保存视频到本地
with open('视频.mp4','wb') as f:
     f.write(response.content)

'''
 1、先往梨视频主页发送请求
     https://www.pearvideo.com/
    
     解析获取所有视频的id：
         video_1570302

         re.fandall()
 
 2、获取视频详情页url:
     惊险!男子抢上地铁滑倒,就脚进去了
     https://www.pearvideo.com/video_1570302
     揭秘坎儿井
     https://www.pearvideo.com/video_1570107
 '''

import requests
import re #正则，用于解析文本数据
#1、先往梨视频主页发送请求
response = requests.get('https://www.pearvideo.com/')
#print(response.text)

#re正则匹配获取所有视频id
#参数1：正则匹配规则
#参数2：解析文本
#参数3：匹配模式
res_list = re.findall('<a href="video_(.*?)"',response.text,re.S) #主页查
#print(res_list)

for v_id in res_list:
     detail_url = 'https://www.pearvideo.com/video_' + v_id
     #print(detail_url)

     #对每一个视频详情页发送请求获取视频源url
     response = requests.get(url=detail_url)
     #print(response.text)

     #解析并提取详情页视频url
     #视频url
     video_url = re.findall('',response.text,re.S)[0]
     print(video_url)

     #视频名称
     video_name = re.findall('',response.text,re.S)[0]

     print(video_name)

     #往视频url发送请求获取视频二进制流
     v_response = requests.get(video_url)

     with open ('%s.mp4' % video_name,'wb') as f:
          f.write(v_response.content)
          print(video_name,'视频爬取完成')