mirror of
https://github.com/saveweb/biliarchiver.git
synced 2024-09-19 19:15:27 -07:00
145 lines
6.2 KiB
Python
145 lines
6.2 KiB
Python
import asyncio
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import os
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import aiofiles
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import httpx
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from bilix.download.utils import raise_api_error, req_retry
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from bilix.exception import APIError
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from bilix.sites.bilibili import api
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from rich import print
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import json
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from bilix.sites.bilibili.downloader import DownloaderBilibili
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BILIBILI_IDENTIFIER_PERFIX = 'BiliBili' # IA identifier 前缀，千万不要改。能与 tubeup 兼容。
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@raise_api_error
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async def new_get_subtitle_info(client: httpx.AsyncClient, bvid, cid):
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params = {'bvid': bvid, 'cid': cid}
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res = await req_retry(client, 'https://api.bilibili.com/x/player/v2', params=params)
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info = json.loads(res.text)
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if info['code'] == -400:
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raise APIError(f'未找到字幕信息', params)
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# 这里 monkey patch 一下把返回 lan_doc 改成返回 lan，这样生成的字幕文件名就是 语言代码 而不是 中文名 了
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# 例如
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# lan_doc: 中文（中国）
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# lang: zh-CN
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# return [[f'http:{i["subtitle_url"]}', i['lan_doc']] for i in info['data']['subtitle']['subtitles']]
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return [[f'http:{i["subtitle_url"]}', i['lan']] for i in info['data']['subtitle']['subtitles']]
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api.get_subtitle_info = new_get_subtitle_info
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async def archive_bvid(d: DownloaderBilibili, bvid: str, logined: bool=False):
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assert d.hierarchy is True, 'hierarchy 必须为 True' # 为保持后续目录结构、文件命名的一致性
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assert d.client.cookies.get('SESSDATA') is not None, 'sess_data 不能为空' # 开个大会员呗，能下 4k 呢。
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assert logined is True, '请先检查 SESSDATA 是否过期，再将 logined 设置为 True' # 防误操作
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assert os.path.exists('biliarchiver.home'), '先创建 biliarchiver.home 文件' # 防误操作
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videos_basepath = f'biliarchiver/videos/{bvid}'
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if os.path.exists(f'{videos_basepath}/_all_downloaded.mark'):
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print(f'{bvid} 所有分p都已下载过了')
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return
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url = f'https://www.bilibili.com/video/{bvid}/'
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# 为了获取 pages，先请求一次
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first_video_info = await api.get_video_info(d.client, url)
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os.makedirs(videos_basepath, exist_ok=True)
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pid = 0
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for page in first_video_info.pages:
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pid += 1 # pid 从 1 开始
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if not page.p_url.endswith(f'?p={pid}'):
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print(f'{bvid} 的 P{pid} 不存在 (可能视频被 UP主/B站 删了)')
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continue
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file_basename = f'{bvid}_p{pid}'
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video_basepath = f'{videos_basepath}/{BILIBILI_IDENTIFIER_PERFIX}-{file_basename}'
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video_extrapath = f'{video_basepath}/extra'
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if os.path.exists(f'{video_basepath}/_downloaded.mark'):
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print(f'{file_basename}: 已经下载过了')
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continue
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video_info = await api.get_video_info(d.client, page.p_url)
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print(f'{file_basename}: {video_info.title}...')
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os.makedirs(video_basepath, exist_ok=True)
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os.makedirs(video_extrapath, exist_ok=True)
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old_p_name = video_info.pages[video_info.p].p_name
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old_h1_title = video_info.h1_title
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# 在 d.hierarchy is True 且 h1_title 超长的情况下， bilix 会将 p_name 作为文件名
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video_info.pages[video_info.p].p_name = file_basename # 所以这里覆盖 p_name 为 file_basename
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video_info.h1_title = 'iiiiii' * 50 # 然后假装超长标题
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# 这样 bilix 保存的文件名就是我们想要的了（谁叫 bilix 不支持自定义文件名呢）
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# NOTE: p_name 似乎也不宜过长，否则还是会被 bilix 截断。
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# 但是我们以 {bvid}_p{pid} 作为文件名，这个长度是没问题的。
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# 选择编码，优先 hevc，没有的话就 avc
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# 不选 av0 ，毕竟目前没几个设备能拖得动
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codec = None
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for media in video_info.dash.videos:
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if media.codec.startswith('hev'):
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codec = media.codec
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break
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if codec is None:
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for media in video_info.dash.videos:
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if media.codec.startswith('avc'):
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codec = media.codec
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break
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assert codec is not None, f'{file_basename}: 没有 avc 或 hevc 编码的视频'
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print(f'{file_basename}: "{media.codec}" "{media.quality}" ...')
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cor1 = d.get_video(page.p_url ,video_info=video_info, path=video_basepath,
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quality=0, # 选择最高画质
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codec=codec, # 编码
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# 下载 ass 弹幕(bilix 会自动调用 danmukuC 将 pb 弹幕转为 ass)、封面、字幕
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# 弹幕、封面、字幕都会被放进 extra 子目录里，所以需要 d.hierarchy is True
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dm=True, image=True, subtitle=True
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)
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# 下载原始的 pb 弹幕
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cor2 = d.get_dm(page.p_url, video_info=video_info, path=video_extrapath)
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# 下载视频超详细信息（BV 级别，不是分 P 级别）
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cor3 = download_bilibili_video_detail(d.client, bvid, f'{video_extrapath}/{file_basename}.info.json')
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await asyncio.gather(cor1, cor2, cor3)
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# 还原为了自定义文件名而做的覆盖
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video_info.pages[video_info.p].p_name = old_p_name
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video_info.h1_title = old_h1_title
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# 单 p 下好了
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async with aiofiles.open(f'{video_basepath}/_downloaded.mark', 'w', encoding='utf-8') as f:
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await f.write('')
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# bv 对应的全部 p 下好了
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async with aiofiles.open(f'{videos_basepath}/_all_downloaded.mark', 'w', encoding='utf-8') as f:
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await f.write('')
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async def download_bilibili_video_detail(client, bvid, filename):
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if os.path.exists(filename):
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print(f'{bvid} 视频详情已存在')
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return
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# url = 'https://api.bilibili.com/x/web-interface/view'
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url = 'https://api.bilibili.com/x/web-interface/view/detail' # 超详细 API（BV 级别，不是分 P 级别）
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params = {'bvid': bvid}
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r = await req_retry(client, url, params=params ,follow_redirects=True)
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r.raise_for_status()
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r_json = r.json()
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assert r_json['code'] == 0, f'{bvid} 视频详情获取失败'
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async with aiofiles.open(filename, 'w', encoding='utf-8') as f:
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# f.write(json.dumps(r.json(), indent=4, ensure_ascii=False))
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await f.write(r.text)
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print(f'{bvid} 视频详情已保存')
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