手把手教你抖音系列视频批量下载器开发

程序使用演示

大家好，手把手教视频我是抖音小小明。这里开发了一个抖音视频下载器，系列下载打开效果如下：

如果本地的批量谷歌游览器之前从来没有访问过抖音主页，点击开始下载按钮会有如下输出：

此时我们只需要点击 访问抖音主页，器开程序则会使用本地的手把手教视频谷歌游览器访问抖音主页。再次点击下载按钮：

可以看到该视频是抖音一个合集视频：

那么程序只需要勾选第一个选项即可下载整个合集：

这样一次性就将整个合集都下载下来了：

开发流程

首先根据上一篇文章：提取谷歌游览器Cookie的五重境界

读取谷歌游览器安装的位置和本地抖音相关的服务器托管cookie：

"""

小小明的代码

CSDN主页：https://blog.csdn.net/as604049322

"""

__author__ = 小小明

__time__ = 2022/1/23

import base64

import json

import os

import sqlite3

import winreg

import win32crypt

from cryptography.hazmat.primitives.ciphers.aead import AESGCM

def load_local_key(localStateFilePath):

"读取chrome保存在json文件中的key再进行base64解码和DPAPI解密得到真实的AESGCM key"

with open(localStateFilePath, encoding=u8) as f:

encrypted_key = json.load(f)[os_crypt][encrypted_key]

encrypted_key_with_header = base64.b64decode(encrypted_key)

encrypted_key = encrypted_key_with_header[5:]

key = win32crypt.CryptUnprotectData(encrypted_key, None, None, None, 0)[1]

return key

def decrypt_value(key, data):

"AESGCM解密"

nonce, cipherbytes = data[3:15], data[15:]

aesgcm = AESGCM(key)

plaintext = aesgcm.decrypt(nonce, cipherbytes, None).decode(u8)

return plaintext

def fetch_host_cookie(host):

"获取指定域名下的所有cookie"

userDataDir = os.environ[LOCALAPPDATA] + r\Google\Chrome\User Data

localStateFilePath = userDataDir + r\Local State

cookiepath = userDataDir + r\Default\Cookies

# 97版本已经将Cookies移动到Network目录下

if not os.path.exists(cookiepath) or os.stat(cookiepath).st_size == 0:

cookiepath = userDataDir + r\Default\Network\Cookies

# print(cookiepath)

sql = f"select name,encrypted_value from cookies where host_key like %.{ host}"

cookies = { }

key = load_local_key(localStateFilePath)

with sqlite3.connect(cookiepath) as conn:

cu = conn.cursor()

for name, encrypted_value in cu.execute(sql).fetchall():

cookies[name] = decrypt_value(key, encrypted_value)

return cookies

def get_chrome_path():

try:

key = winreg.OpenKey(winreg.HKEY_CLASSES_ROOT, r"ChromeHTML\Application")

path = winreg.QueryValueEx(key, "ApplicationIcon")[0]

chrome_path = path[:path.rfind(",")]

return chrome_path

except FileNotFoundError as e:

return

if __name__ == __main__:

print(fetch_host_cookie("douyin.com"))

print(get_chrome_path())

有了这个工具类，我们就不再需要使用selenium。系列下载

然后是批量视频解析的核心代码如下：

def get_video_url(url, cookies):

headers = {

"User-Agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/87.0.4280.66 Safari/537.36",

"referer": "https://www.douyin.com"

}

res = requests.get(url, headers=headers, cookies=cookies)

if res.status_code == 200:

RENDER_DATA, = re.findall(

r, res.text)

data = json.loads(unquote(RENDER_DATA))

key = 8 if url.find("collection") != -1 else 34

try:

detail = data[key][aweme][detail]

title = detail[desc]

except Exception as e:

print(f"{ url}无效，报错的器开key:", e)

return

if not title:

title, = re.findall("]+>\s*([^>]+)\s*", res.text)

video_url = urljoin(url, detail[video][playApi])

collection_urls = set(re.findall("//www.douyin.com/collection/\d+/\d+", res.text))

collection_urls = [urljoin("https://www.douyin.com", url) for url in collection_urls]

collection_urls.sort(key=lambda s: int(s[s.rfind("/") + 1:]))

collection_title = re.findall("

]+>([^<>]+)

", res.text)[0]

return video_url, title, collection_urls, collection_title

else:

print(视频链接请求失败！！源码下载手把手教视频！抖音)

视频下载的系列下载核心代码：

def download_video(video_url, title, folder):

start_time = time.time()

res = requests.get(url=video_url, stream=True)

done_size, total = 0, int(res.headers[content-length])

chunk_size = 1024 * 1024

title = format_filename(title)

file_size = round(int(res.headers[content-length]) / 1024 / 1024, 2)

basename = f"{ title}.mp4"

filename = f"{ folder}/{ title}.mp4"

if os.path.exists(filename):

print(basename, "已存在，跳过...")

return

print("-----------------------------------")

print(f开始下载文件：{ basename}\n当前文件大小：{ file_size}MB)

with open(filename,批量 wb) as f:

for chunk in res.iter_content(chunk_size):

f.write(chunk)

done_size += len(chunk)

cost_time = time.time() - start_time

yield done_size, cost_time, total

# print(f"进度：{ done_size / total:.2%},{ done_size / cost_time / 1024 / 1024:.2f}MB/s")

cost_time = time.time() - start_time

print(f文件：{ basename} 下载完成！\n耗时：{ cost_time:0.2f} 秒)

关于视频链接的器开分析，大家可以参考才哥的文章：

《用Python搞定抖X无水印短视频下载》

链接：https://mp.weixin.qq.com/s/NNVT6IH6dpT0rTeu1-oD6w

UI界面设计核心代码如下：

layout = [

[sg.Text(抖音视频地址：, font=("楷体", 12)),

sg.In(key=url, size=(70, 1), text_color="#bb8b59",

default_text="https://www.douyin.com/video/6803929443069988103")],

[sg.Checkbox(如果是一个合集则下载整个合集, key="download_collection", default=False),

sg.Button(开始下载),

sg.Button(清空输出),

sg.Button(访问抖音主页),

sg.Button(访问当前地址),

],

[sg.Output(size=(85, 10), key="out", text_color="#15d36a")],

[

sg.ProgressBar(1000, size=(20, 20), key=video_bar, bar_color=("#bb8b59", "#295273")),

sg.Text(000.0MB,00/00\n00:00<00:00, key="message_video"),

sg.ProgressBar(1000, size=(20, 20), key=progressbar, bar_color=("#15d36a", "#295273")),

sg.Text(00.00MB/00.00MB\n00.00MB/s, key="message")

],

[sg.Text(输出目录：, font=("楷体", 12)),

sg.In(size=(35, 1), key="save_dir"),

sg.FolderBrowse(..., target=save_dir, initial_folder="."),

sg.Checkbox( 下载完毕后 \n打开所在目录, key="open_folder", default=True),

sg.Button(打开输出目录),

],

[sg.Text("@小小明：https://blog.csdn.net/as604049322"), ],

]

程序下载

该工具的完整代码和已打包的工具下载地址：

https://gitcode.net/as604049322/python_gui/-/tree/master/douyin

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