曝肝三天,两千行Python代码,制作B站视频下载工具(附源码)
文章目录
一.准备工作
二.预览
1.启动
2.解析
3.下载中
4.下载完成
5.结果
三.设计流程
1.bilibili_video_spider
2.视频json的查找
四.源代码
1.Bilibili_Video_Downloader-GUI
2.bilibili_video_spider
五.总结
由于B站没有PC客户端,电脑下载视频很不方便,遂使用Tk编写一款B站视频下载工具,输入一个网址选择清晰度之后就能够下载对应的视频,可以下载单P、合集、合集单P,使用可视化GUI图形界面,交互性更强,来吧,展示~
很多人学习python,不知道从何学起。 很多人学习python,掌握了基本语法过后,不知道在哪里寻找案例上手。 很多已经做案例的人,却不知道如何去学习更加高深的知识。 那么针对这三类人,我给大家提供一个好的学习平台,免费领取视频教程,电子书籍,以及课程的源代码!QQ群:701698587欢迎加入,一起讨论 一起学习!
一.准备工作
tkinter、os系统模块、re正则模块、subprocess新的进程模块、还有本次比较重要的ffmpeg.exe用于视频和音频的合并,关于ffmpeg请参考:ffmpeg - 百度百科
二.预览
1.启动
2.解析
解析出多个清晰度视频以供下载
3.下载中
4.下载完成
分别下载完视频和音频后,对它们进行合并,最后输出一个完整的视频文件
5.结果
1080P+,针不戳
三.设计流程
1.bilibili_video_spider
2.视频json的查找
首先查看网页源代码
在网页的这个js里,能够找到关于视频的相关视频、音频、视频质量、长度、格式…等信息,直接正则截取就好啦
紧接着,下面这个js里,就是视频的aid、分P信息、up主信息、相关视频推荐信息,也用正则就能截取
四.源代码
1.Bilibili_Video_Downloader-GUI
from tkinter import *from tkinter import ttkfrom tkinter import messageboximport osimport threadingfrom bilibili_video_spider import Bibili_Video_Spider as sp2import refrom my_util import My_Util"""GUI+Spider"""class App: def __init__(self): self.base_dir = './bilibili_videos/' self.start_flag='' self.has_more_flag='' self.spider=sp2() self.create_widget() self.set_widget() self.place_widget() self.window.mainloop() def create_widget(self): self.window = Tk() self.window.title('Bilibili_Video_Downloader-v1.0') width = 450 height = 520 screen_width = self.window.winfo_screenwidth() screen_height = self.window.winfo_screenheight() left = (screen_width - width) / 2 top = (screen_height - height) / 2 self.window.geometry("%dx%d+%d+%d" % (width, height, left, top)) self.window.resizable(0, 0) self.l1 = ttk.Label(self.window, text='请输入视频链接地址:') self.e1_var=StringVar() self.e1 = ttk.Entry(self.window, width=90,textvariable=self.e1_var) self.l5 = ttk.Label(self.window, text='选择清晰度:') self.combobox=ttk.Combobox(self.window,state='readonly',width=15,justify='center') self.l2 = ttk.Label(self.window, text='当前状态:') self.t1 = Text(self.window, width=80, height=20) self.l3_var=StringVar() self.l3 = ttk.Label(self.window, text='当前下载进度:',textvariable=self.l3_var) self.progress=ttk.Progressbar(self.window,orient=HORIZONTAL,length=400,mode='determinate',value=0,maximum=100) self.l4_var = StringVar() self.l4_var.set('0.0%[未下载]') self.l4 = ttk.Label(self.window, textvariable=self.l4_var) self.b1 = ttk.Button(self.window, text='解析', command=lambda: self.thread_it(self.pre_analysis)) self.b2 = ttk.Button(self.window, text='下载', command=lambda: self.thread_it(self.donwload_video)) def set_widget(self): self.window.protocol('WM_DELETE_WINDOW', self.quit_window) self.window.bind('', self.escape) self.e1.bind('', self.enter) self.b2.config(state=DISABLED) self.combobox.config(value=['--请先解析--']) self.combobox.current(0) def place_widget(self): self.l1.pack(anchor="w") self.e1.pack(anchor="w", padx=20) self.l5.pack(anchor="w",pady=5) self.combobox.pack(anchor="center") self.l2.pack(anchor="w") self.t1.pack(anchor="w", padx=20) self.l3.pack(anchor="w",pady=5) self.progress.pack(pady=5) self.l4.pack() self.b1.pack(side='left', padx=90) self.b2.pack(side='left', padx=10) def pre_analysis(self): input_video_link = self.e1.get() input_video_link=input_video_link.strip() if input_video_link.startswith(r'https://www.bilibili.com/video/'): if '&' in input_video_link: raw_link=input_video_link.split('&')[0] else: raw_link=input_video_link try: #av 转 bv av_number = int(re.findall('https://www.bilibili.com/video/av(\d+)?', raw_link)[0]) url=raw_link.replace(av_number,My_Util().av_convert_bv(av_number)) except IndexError: url=raw_link self.spider.set_start_url(url) self.spider.get_page_html() self.video_number = self.spider.get_video_number() base_title = self.spider.get_video_title() if re.match('https://www.bilibili.com/video/.*\?p=\d+',url): current_num=re.findall('https://www.bilibili.com/video/.*\?p=(\d+)',url) self.has_more_flag=True self.current_video_title=self.spider.part_name_list[int(current_num[0])] else: self.has_more_flag=False self.current_video_title=base_title self.entrace_url=url self.analysis_videos(url) if self.start_flag!=True: self.b2.config(state=NORMAL) # self.b1.config(state=DISABLED) else: messagebox.showwarning('警告', '请输入正确的分享链接!') self.e1_var.set('') def analysis_videos(self,url): """ :param url: :return: """ My_Util().do_makedirs(self.base_dir) self.video_item_ = self.spider.get_video_and_audio(self.spider.get_video_detail_json()) video_quality_list=[] for video_detail in self.video_item_['video_detail']: for data in video_detail.items(): video_quality_list.append(data[0]) self.combobox.config(value=video_quality_list) self.combobox.current(0) self.t1.delete(0.0,END) self.insert_to_t1(f'[视频标题]:{self.current_video_title}') self.insert_to_t1(f'[视频时长]:{self.video_item_["video_length"]}') self.insert_to_t1(f'[视频清晰度]:{" ".join(video_quality_list)}') self.insert_to_t1(f'请选择清晰度后点击下载按钮---------------',time_str=False) def donwload_video(self): self.start_flag=True self.b2.config(state=DISABLED) if self.has_more_flag: ret = messagebox.askyesno('提示', '此视频包含多P,是否下载全集?') if ret: download_more=True else: download_more=False else: download_more=False for i in range(self.video_number): if download_more: begin_url = self.entrace_url.split('?')[0] + f'?p={i+1}' self.spider.video_title = self.spider.part_name_list[i] current_title=self.spider.part_name_list[i] else: begin_url=self.entrace_url self.spider.video_title = self.current_video_title current_title =self.current_video_title self.insert_to_t1(f'开始下载{current_title}---------------') self.l3_var.set('视频下载进度:') self.spider.set_start_url(begin_url) video_item_ = self.spider.get_video_and_audio(self.spider.get_video_detail_json()) video_url_list=[] for video_detail in video_item_['video_detail']: for data in video_detail.items(): video_url_list.append(data[1]) download_url = video_url_list[self.combobox.current()] current_video_name=self.spider.part_name_list[i] for progrees, speed in self.spider.down_video(download_url,): self.progress['value'] = progrees self.l4_var.set(f'进度:%.1f%% 速度:%s' % (progrees, speed)) self.progress.update() self.insert_to_t1(f'[{current_video_name}视频下载完成...') self.l4_var.set('100%[下载完成]') self.insert_to_t1('-' * 30) audio_url = video_item_['audio_url'] self.insert_to_t1(f'开始下载{current_title}音频---------------') self.l3_var.set('音频下载进度:') for progrees, speed in self.spider.downlonad_autio(audio_url,): self.progress['value'] = progrees self.l4_var.set(f'进度:%.1f%% 速度:%s' % (progrees, speed)) self.progress.update() self.insert_to_t1(f'[{current_video_name}音频下载完成...') self.l4_var.set('100%[下载完成]') self.insert_to_t1('-' * 30) self.insert_to_t1(f'开始合并视频---------------') if (self.spider.mix_video()): self.insert_to_t1(f'清理临时视频文件完成---------------') self.insert_to_t1(f'清理临时音频文件完成---------------') self.insert_to_t1(f'合并视频完成---------------') else: self.insert_to_t1(f'发生了异常错误!---------------') if not download_more: break self.b1.config(state=NORMAL) self.b2.config(state=NORMAL) def insert_to_t1(self,line,time_str=True): if time_str==True: time_string=My_Util().get_time_string() self.t1.insert(END,f'[{time_string}]'+line+'\n') else: self.t1.insert(END,line+'\n') self.t1.yview_moveto(1) def open_dir(self): abs_path = os.path.abspath(self.base_dir) # 使用绝对路径打开文件夹 os.startfile(abs_path) def quit_window(self): ret = messagebox.askyesno('提示', '是否要退出?') if ret == True: self.window.destroy() def escape(self,event): self.quit_window() def connect_author(self): messagebox.showinfo('联系作者', '作者QQ:懷淰メ') def enter(self,event): self.thread_it(self.pre_analysis) def thread_it(self,func, *args): t = threading.Thread(target=func, args=args) self.window.update() t.setDaemon(True) # 设置守护,主线程结束,子线程结束 t.start()if __name__ == '__main__': App() """ test https://www.bilibili.com/video/BV1ML411J7es """
2.bilibili_video_spider
import jsonimport requestsimport reimport osimport subprocessfrom my_util import My_Utilimport time"""版本2分别下载音频和视频,通过ffmpeg合并 三种情况 1.单P 2.多P下载单集 3.多P下载全集"""class Bibili_Video_Spider(object): def __init__(self,): self.s=requests.session() self.headers={ 'Content-Range': 'bytes 0-xxxxxx', "user-agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/91.0.4472.124 Safari/537.36" } self.util=My_Util() def set_start_url(self,start_url): self.start_url=start_url self.get_page_html() def get_video_title(self): """ 起始视频标题,作为下载视频的目录名 :return: """ regx='name="keywords" content="(.*?),' title=re.findall(regx,self.srart_html) title=title[0] return title def get_page_html(self): """ 获取网页源代码 :return: """ headers={ 'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/69.0.3497.100 Safari/537.36', 'Content-Range': 'bytes 0-xxxxxx', 'Referer': self.start_url } r=self.s.get(self.start_url,headers=headers) if r.status_code==200: r.encoding='utf-8' self.srart_html=r.text def get_video_number(self): """ 是否含有多P,若含有分P,则将所有分P名字存入list :return: """ html_part = re.findall('window.__INITIAL_STATE__=(.*?) ', self.srart_html) part_json_str = html_part[0].split(';(function(){var')[0] part_json = json.loads(part_json_str.strip()) pages = part_json['videoData']['pages'] self.part_name_list = [part_name['part'] for part_name in pages] if len(pages)!=1: part_number=len(pages) else: part_number=1 return part_number def get_video_detail_json(self): """ 获取视频详情json,里面包括视频m4a地址,以及audio音频,版本2主要依赖此Json :return: """ regx='window.__playinfo__=(.*?) www.sobd.cc www.somanba.cn www.zuowenge.cn
赞 (0)