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Python 仅下载B站视频的音频
因为各音源网站都要会员而且资源都不全，但是B站上所有的歌或者郭德纲的相声是都可以分享的，所以想在B站上下载想要的歌或者其他的音频。
首先打开一个连接https://www.bilibili.com/video/BV1qt411g7pN?from=search&seid=5481535319705708598 打开浏览器按F12 ,切换到NetWork。会看到有资源不停的加载  像图片上这样数字开头的里面带有m4s？的就是视频的真实url 左键点开可以看到下图
 直接复制Request URL** 前面到m4s?的一部分**  回到播放视频窗口右键 然后点击查看源代码 在源代码页面按ctrl + f 把复制的部分链接粘贴  只要能搜索到结果就说明视频和音频文件的原始链接就在页面源码里面。 在页面源码里面顺着查找到结果的地方往前找可以看到window.__playinfo__={"code":0,"message":"0","ttl":1,"data":{"from":"local","result":"suee","message":"","quality":64,"format":"flv720","timelength":174015,"accept_format":"flv720,flv480,mp4","accept_description":["高清 720P","清晰 480P","流畅 360P"],"accept_quality":[64,32,16],"video_codecid":7,"seek_param":"start","seek_type":"offset","dash":{"duration":175,"minBufferTime":1.5,"min_buffer_time":1.5,"video":[{"id":64,"baseUrl":"https://cn-sh-cc-bcache-10.bilivideo.com/upgcxcode/44/74/3547444/3547444_da3-1-30064.m4s?…等 很显然window.__playinfo__=后面的是一个json格式的数据只要用正则表达式提取出来再转化格式很容易就提取到url。 提取出来的数据用json格式化一些  音频的url是audio的值
# coding=utf-8
import requests
import re
import json
from lxml import etree
# 获取有分p的所有视频的音频
def get_all_url(start_url):
video_code = start_url.split('/')[4][:12] #提取B站视频的编号
res = requests.get(url=start_url, headers=headers).text
pattern_ = 'window.__INITIAL_STATE__=(.*?);\(function' # 提取分p视频列表信息的json数据
n_ = re.findall(pattern_, res, re.S)
xx_json = json.loads(n_[0])
names = xx_json['videoData']['pages']# 提取分p视频的所有标题
return names, video_code
# 获取有分p的所有视频的音频
def all_mp3(data, code):
for da in data:
page_num = da['page']# 有多少个视频
name = da['part']# 提取分p视频的所有标题
url = 'https://www.bilibili.com/video/{}?p='.format(code) + str(page_num) #拼接所有的视频的url
response = requests.get(url, headers).text
pattern = 'window\.__playinfo__=(.*?)' #提取音频url
list_ = re.findall(pattern, response, re.S)
list_json = json.loads(list_[0])
volume_url = list_json['data']['dash']['audio'][0]['baseUrl']
print(volume_url)
PATH = 'E:/音乐/' + name + '.mp3' #保存路径
audio = requests.get(url=volume_url, headers=headers).content
with open(PATH, 'wb') as f:
f.write(audio)
print('下载完成')
# 获取没有分p视频的音频文件
def get_mp3(url_):
response = requests.get(url_, headers).text
tree = etree.HTML(response)
pattern = 'window\.__playinfo__=(.*?)' #提取音频url
list_ = re.findall(pattern, response, re.S)
list_json = json.loads(list_[0])
title = tree.xpath('//*[@id="viewbox_report"]/h1/span/text()')[0] # 获取标题
volume_url = list_json['data']['dash']['audio'][0]['baseUrl']
print(volume_url)
PATH = 'E:/音乐/' + title + '.mp3'#保存路径
audio = requests.get(url=volume_url, headers=headers).content
with open(PATH, 'wb') as f:
f.write(audio)
print('下载完成')
# 获取视频分p的单个特定视频的链接
def list_mp3(url_):
pg_num = url_.split('p=')[-1]
response = requests.get(url_, headers).text
pattern = 'window\.__playinfo__=(.*?)' # 提取音频url
list_ = re.findall(pattern, response, re.S)
pattern_ = 'window.__INITIAL_STATE__=(.*?);\(function' # 提取标题
n_ = re.findall(pattern_, response, re.S)
xx_json = json.loads(n_[0])
names = xx_json['videoData']['pages']
nn = 'sb'
for name in names:
if name['page'] == int(pg_num):
nn = name['part']
list_json = json.loads(list_[0])
volume_url = list_json['data']['dash']['audio'][0]['baseUrl']
print(volume_url)
PATH = 'E:/音乐/' + nn + '.mp3'
audio = requests.get(url=volume_url, headers=headers).content
with open(PATH, 'wb') as f:
f.write(audio)
print('下载完成')
# 获取单个的没有分p视频音频
if __name__ == '__main__':
headers = {
'Referer': 'https://www.bilibili.com/',
'User-Agent': 'Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/75.0.3770.100 Safari/537.36'
}
get_mp3('https://www.bilibili.com/video/BV1XK4y147gU')
#获取有分p的所有视频音频
if __name__ == '__main__':
headers = {
'Referer': 'https://www.bilibili.com/',
'User-Agent': 'Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/75.0.3770.100 Safari/537.36'
}
names_, code_ = get_all_url('https://www.bilibili.com/video/BV1Ps411U7xS?from=search&seid=14308701883993529089')
all_mp3(names_, code_)
#获取有分p其中一个视频音频
if __name__ == '__main__':
headers = {
'Referer': 'https://www.bilibili.com/',
'User-Agent': 'Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/75.0.3770.100 Safari/537.36'
}
list_mp3('https://www.bilibili.com/video/BV1Ps411U7xS?p=7')
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