下载 bilibili 字幕的脚本, 分享一下

牙签执法官 · 发表于 2024-4-19 09:14:10

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本帖最后由牙签执法官于 2024-4-19 09:17 编辑

想下载一个视频教程,发现字幕没有下载. 网上也没有工具,代码如下：

"""下载哔哩哔哩字幕
"""
import math
import os
import time
import requests
import json
def convert_json_to_srt(json_files_path):
"""
json 格式的字幕转为 srt 格式
代码来源 https://www.jianshu.com/p/66450e9554f8
"""
json_files = os.listdir(json_files_path)
srt_files_path = os.path.join(json_files_path, 'srt') # 更改后缀后字幕文件的路径
isExists = os.path.exists(srt_files_path)
if not isExists:
os.mkdir(srt_files_path)
for json_file in json_files:
file_name = json_file.replace(json_file[-5:], '.srt') # 改变转换后字幕的后缀
file = '' # 这个变量用来保存数据
i = 1
# 将此处文件位置进行修改，加上utf-8是为了避免处理中文时报错
with open(os.path.join(json_files_path, json_file), encoding='utf-8') as f:
datas = json.load(f) # 加载文件数据
f.close()
for data in datas['body']:
start = data['from'] # 获取开始时间
stop = data['to'] # 获取结束时间
content = data['content'] # 获取字幕内容
file += '{}\n'.format(i) # 加入序号
hour = math.floor(start) // 3600
minute = (math.floor(start) - hour * 3600) // 60
sec = math.floor(start) - hour * 3600 - minute * 60
minisec = int(math.modf(start)[0] * 100) # 处理开始时间
file += str(hour).zfill(2) + ':' + str(minute).zfill(2) + ':' + str(sec).zfill(2) + ',' + str(
minisec).zfill(2) # 将数字填充0并按照格式写入
file += ' --> '
hour = math.floor(stop) // 3600
minute = (math.floor(stop) - hour * 3600) // 60
sec = math.floor(stop) - hour * 3600 - minute * 60
minisec = abs(int(math.modf(stop)[0] * 100 - 1)) # 此处减1是为了防止两个字幕同时出现
file += str(hour).zfill(2) + ':' + str(minute).zfill(2) + ':' + str(sec).zfill(2) + ',' + str(
minisec).zfill(2)
file += '\n' + content + '\n\n' # 加入字幕文字
i += 1
with open(os.path.join(srt_files_path, file_name), 'w', encoding='utf-8') as f:
f.write(file) # 将数据写入文件
def download_subtitle_json(bvid: str):
"""
下载字幕
"""
sub_dir = f'./{bvid}'
if not os.path.isdir(sub_dir):
os.mkdir('./{bvid}')
headers = {
'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:125.0) Gecko/20100101 Firefox/125.0',
'Accept': 'application/json, text/plain, */*',
'Accept-Language': 'en-US,en;q=0.5',
# 'Accept-Encoding': 'gzip, deflate, br',
'Referer': 'https://www.bilibili.com/video/{bvid}/?p=1',
'Origin': 'https://www.bilibili.com',
'Connection': 'keep-alive',
# TODO 改为自己的cookie , 通过浏览器的 network(网络) 复制
'Cookie': "",
'Sec-Fetch-Dest': 'empty',
'Sec-Fetch-Mode': 'cors',
'Sec-Fetch-Site': 'same-site',
}
resp = requests.get(f'https://www.bilibili.com/video/{bvid}/', headers=headers)
text = resp.text
aid = text[text.find('"aid"') + 6:]
aid = aid[:aid.find(',')]
cid_back = requests.get("http://api.bilibili.com/x/player/pagelist?bvid={}".format(bvid), headers=headers)
if cid_back.status_code != 200:
print('获取 playlist 失败')
cid_json = json.loads(cid_back.content)
for item in cid_json['data']:
cid = item['cid']
title = item['part'] + '.json'
params = {
'aid': aid,
'cid': cid,
'isGaiaAvoided': 'false',
'web_location': '1315873',
'w_rid': '364cdf378b75ef6a0cee77484ce29dbb',
'wts': int(time.time()),
}
wbi_resp = requests.get('https://api.bilibili.com/x/player/wbi/v2', params=params, headers=headers)
if wbi_resp.status_code != 200:
print('获取字幕链接失败')
subtitle_links = wbi_resp.json()['data']["subtitle"]['subtitles']
if subtitle_links:
# 默认下载第一个字幕
subtitle_url = "https:" + subtitle_links[0]['subtitle_url']
subtitle_resp = requests.get(subtitle_url, headers=headers)
open(os.path.join(sub_dir, title), 'w', encoding='utf-8').write(subtitle_resp.text)
if __name__ == '__main__':
# todo 改成需要下载的 bvid, https://www.bilibili.com/video/<bvid>
BVID = 'BV1s8411v7nE'
download_subtitle_json(BVID)
# convert_json_to_srt(f'./{BVID}')