根据抖音分享的短链接，批量下载抖音短视频
只需要在数组 urlData[ ] 中添加需要下载的链接即可
注意：平台有反爬机制，批量下载的时候尽量加随机延迟，避免网站有反爬机制封掉ip

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# -*- coding=utf-8 -*-
# DY去水印批量下载
import requests
import re
from time import time, sleep
 
header = {
    "User-Agent": "Mozilla/5.0 (Linux; Android 8.0.0; EVA-AL10 Build/HUAWEIEVA-AL10;\
		 wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/76.0.3809.89\
		  Mobile Safari/537.36 T7/11.20 SP-engine/2.16.0 baiduboxapp/11.20.0.14 (Baidu; P1 8.0.0)",
}
 
# 根据分享链接，重定向后获取视频id
def getVideoId(urlShare):
    # 先访问传入的链接，获取跳转后的链接(针对短连接)
    # 获取重定向的链接
    redirectUrl = requests.get(url=urlShare, headers=header).url
    # 返回的链接应该是 https://www.iesdouyin.com/share/video/视频ID/ 通过正则寻找视频id
    pat = re.compile(r"/video/(\d+)/")
    result = pat.search(redirectUrl)  # 寻找的结果
    if result == None:
        print("视频id获取失败")
        id = "0"  # 失败返回0
    else:
        id = pat.search(redirectUrl).group(1)
    return id
 
# 返回视频无水印链接和描述和音频地址，传入视频id
def getDouyinVideoUrl(dyVideoId):
    b_time = time()
    # 网页抓的视频接口
    url = "https://www.iesdouyin.com/web/api/v2/aweme/iteminfo/?item_ids=" + str(dyVideoId)
    # 视频接口json解析 取得无水印的视频链接 但是没跳转
    resp = requests.get(url, headers=header).json()
    # print(resp)
    title = resp["item_list"][0]["desc"]
    wm_url = resp["item_list"][0]["video"]["play_addr"]["url_list"][0].replace('playwm', 'play')
    mp3_url = resp["item_list"][0]["music"]["play_url"]["uri"]
    photo_url = resp["item_list"][0]["video"]["origin_cover"]["url_list"][0]
    # 访问无水印链接，获取跳转后的链接要用安卓手机ua访问
    videoUrl = requests.get(url=wm_url, headers=header).url
    e_time = time()
    print("视频解析成功, 耗时:", str(round(e_time - b_time, 2)) + "s")
    return title, videoUrl, mp3_url, photo_url
 
# 写入视频加上描述
def writeVideo(url, downloadPath, name):
    b_time = time()
    video = requests.get(url, headers=header).content
    path = downloadPath + name + ".mp4"
    with open(path, "wb") as f:
        f.write(video)
    e_time = time()
    print("视频: ", name, "下载成功, 耗时:", str(round(e_time - b_time, 2)) + "s")
 
if __name__ == '__main__':
    # 下载存放路径
    downloadPath = r"/Users/renyuxin/Downloads/"
    # 抖音分享链接
    urlData = ["https://v.douyin.com/jDvWosy/", "https://v.douyin.com/jDv3mQX/"]
 
    # 遍历下载
    for index in urlData:
        # 开始下载时间
        startTime = time()
        # 根据分享链接，重定向后获取视频id
        dyVideoId = getVideoId(index)
        # 获取视频内容
        title, video_url, mp3_url, photo_url = getDouyinVideoUrl(dyVideoId)
        print("\t视频标题:", title, "\n\t链接:", video_url, "\n\t音频链接:", mp3_url, "\n\t封面图:", photo_url)
        # 自定义视频名称
        writeVideo(video_url, downloadPath, title)
        # 结束下载时间
        endTime = time()
        print("下载总耗时:", str(round(endTime - startTime, 2))+"s", "下载第", index, "个")
        print("\n\n")