python 下载bilibili视频

说明:

1.清晰度的选择要登录,暂时还没做,目前下载的视频清晰度都是默认的480P

2.进度条仿linux的,参考了一些博客修改了下,侵删

3.其他评论,弹幕之类的相关爬虫代码放在了https://github.com/teleJa/bilibili

4.判断sys.argv那个地方是因为一些爬虫调用了该文件,如果感觉不方面,直接传递视频番号进去就可以了

下载过程如图

直接上代码:

 import requests
 import re
 import os
 import json
 import sys
 import math
 from lxml import etree

 class BLDSplider:
     regex_cid = re.compile("\"cid\":(.{8})")

     def __init__(self, aid):
         self.aid = aid

         self.origin_url = "https://www.bilibili.com/video/av{}?from=search&seid=9346373599622336536".format(aid)
         self.headers = {
             "User-Agent": "Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/68.0.3440.106 Safari/537.36",
         }

         self.url = "https://api.bilibili.com/x/player/playurl?avid={}&cid={}&qn=0&type=&otype=json"

     def check_dir(self, author_name):
         # 检查目录
         self.parent_path = "e:/bilibili/" + author_name + "/" + str(self.aid) + "/"
         if not os.path.exists(self.parent_path):
             os.makedirs(self.parent_path)

         self.video_name = self.parent_path + str(self.aid) + ".mp4"

     def parse_url(self, item):
         cid = item["cid"]
         print("aid:%s   cid:%s" % (str(self.aid), cid))
         title = item["title"]
         print("title:%s" % title)

         self.headers["Referer"] = self.origin_url
         # 视频
         response = requests.get(self.url.format(self.aid, cid), headers=self.headers)
         if response.status_code == 200:
             result = json.loads(response.content.decode())
             durl = result["data"]["durl"][0]
             video_url = durl["url"]
             print("video_url:%s" % video_url)
             # 视频大小
             size = durl["size"]
             print("size:%s,约%2.2fMB" % (size, size / (1024 * 1024)))
             video_response = requests.get(video_url, headers=self.headers, stream=True)
             if video_response.status_code == 200:
                 with open(self.video_name, "wb") as file:
                     buffer = 1024
                     count = 0
                     while True:
                         if count + buffer <= size:
                             file.write(video_response.raw.read(buffer))
                             count += buffer
                         else:
                             file.write(video_response.raw.read(size % buffer))
                             count += size % buffer
                         file_size = os.path.getsize(self.video_name)
                         # print("\r下载进度 %.2f %%" % (count * 100 / size), end="")

                         width = 50
                         percent = (count / size)
                         use_num = int(percent * width)
                         space_num = int(width - use_num)
                         percent = percent * 100
                         print('\r进度:[%s%s]    %d%%' % (use_num * '#', space_num * ' ', percent), file=sys.stdout,
                               flush=True, end="")
                         if size == count:
                             break
                 print("\r\n")

     # 获取视频相关参数
     def get_video_info(self):
         response = requests.get(self.origin_url, headers=self.headers)
         item = dict()
         if response.status_code == 200:
             # author
             html_element = etree.HTML(response.content.decode())
             author = dict()
             author_name = html_element.xpath(
                 "/html/body/div[@id='app']/div[@class='v-wrap']/div[@class='r-con']/div[@id='v_upinfo']//a[@report-id='name']/text()")[
                 0]
             # 通常是微博,微信公众号等联系方式
             author_others = html_element.xpath(
                 "/html/body/div[@id='app']/div[@class='v-wrap']/div[@class='r-con']/div[@id='v_upinfo']//div[@class='desc']/@title")[
                 0]
             author["name"] = author_name
             author["others"] = author_others
             item["author"] = author

             # cid
             cid = BLDSplider.regex_cid.findall(response.content.decode())[0]
             item["cid"] = cid
             info_url = "https://api.bilibili.com/x/web-interface/view?aid={}&cid={}".format(self.aid, cid)
             info_response = requests.get(info_url, headers=self.headers)
             if info_response.status_code == 200:
                 data = json.loads(info_response.content.decode())["data"]
                 # 视频简介
                 desc = data["desc"]
                 item["desc"] = desc

                 # title
                 title = data["title"]
                 item["title"] = title

                 stat = data["stat"]
                 # 播放量
                 view = stat["view"]
                 item["view"] = view

                 # 弹幕
                 danmaku = stat["danmaku"]
                 item["danmaku"] = danmaku

                 # 评论
                 reply = stat["reply"]
                 item["reply"] = reply

                 # 硬币
                 coin = stat["coin"]
                 item["coin"] = coin

                 # 点赞
                 like = stat["like"]
                 item["like"] = like

                 # 收藏
                 favorite = stat["favorite"]
                 item["favorite"] = favorite

                 # 分享
                 share = stat["share"]
                 item["share"] = share
             self.check_dir(item["author"]["name"])
             # 视频参数
             with open(self.parent_path + "video_info.txt", "w") as file:
                 file.write(json.dumps(item, ensure_ascii=False, indent=2))
             return item

     def run(self):
         item = self.get_video_info()
         self.parse_url(item)

 def main():
     #
     aid = 55036734
     if len(sys.argv) >= 2:
         if sys.argv[1]:
             aid = sys.argv[1]
     splider = BLDSplider(aid)
     splider.run()

 if __name__ == '__main__':
     main()