【python】油管外挂字幕下载位srt歌词字幕文本文件

ゝ一世哀愁。 2024-03-23 19:53 70阅读 0赞

### 【python】 油管外挂字幕下载位srt文本文件 ###

### 案例截图 ###

![下载油管外挂字幕使用方法][b991597777e247e59e5b0e22546bea41.png]

### 案例代码 ###

# python程序，可以下youtube视频的字幕文件。输入一个视频的url，就会下载它的字幕文件到一个文件夹里。
    # Author WeChat:****请私信,
    # Date:2023-8-2,
    # Email:ack1024#hotmail.com
    # 本软件遵循 Apache License 2.0协议
    
    # 导入需要的模块
    import json
    import math
    import time
    
    import requests
    import re
    import os
    import xml.etree.ElementTree as ElementTree
    from html import unescape
    
    # 梯子
    proxies = {
        
        "http": "http://127.0.0.1:10809",
        "https": "http://127.0.0.1:10809",
    }
    # 请求头
    headers = {
        
        'user-agent': 'Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/87.0.4280.66 Safari/537.36'
    }
    
    
    # 定义一个函数，根据视频的url获取字幕的url
    def get_subtitle_url(video_url):
    
        # 发送请求，获取视频页面的源码
        response = requests.get(video_url, proxies=proxies, headers=headers)
    
        html = response.text
    
        # 用正则表达式匹配字幕的url
        match = re.search(pattern, html)
        if match:
            # 如果找到了字幕的url，返回它
            subtitle_url = match.group(1)
            return subtitle_url
        else:
            # 如果没有找到字幕的url，返回None
            return None
    
    # 定义一个函数，根据字幕的url下载字幕文件
    def download_subtitle(subtitle_url, video_id):
    
        # 发送请求，获取字幕的内容
        response = requests.get(subtitle_url, proxies=proxies, headers=headers)
        content = response.text
    
        # 用正则表达式去掉不需要的标签
    
        content = xml_caption_to_srt(content)
    
        # 创建一个文件夹，用于存放字幕文件
        folder = 'subtitles'
        if not os.path.exists(folder):
            os.mkdir(folder)
    
        filename = video_id + '.srt'
    
        filepath = os.path.join(folder, filename)
    
        with open(filepath, 'w', encoding='utf-8') as f:
            f.write(content)
    
        print('已下载字幕文件：' + filepath)
    
    # 根据视频的url下载视频的字幕文件
    def download_video_subtitle(video_url):
    
        video_id = video_url.split('=')[-1]
        print('当前视频id:',video_id)
    
        # 调用函数，获取字幕的url
        subtitle_url = get_subtitle_url(video_url)
    
        if not subtitle_url:
            # 如果没有字幕的url，打印提示信息
            print('该视频没有字幕')
            exit(0)
    
        subtitle_url = '[' + subtitle_url + ']'
    
        subtitle_urlDics = json.loads(subtitle_url)
        strp = ['序号:' + str(i) + ' ' + subtitle_urlDics[i]['name']['simpleText'] for i in range(len(subtitle_urlDics))]
        for i in strp:
            print(i)
    
        choiceIndex = int(input('请输入要下载的语言(最前面数字序号)：'))
    
        subtitle_url = subtitle_urlDics[choiceIndex]['baseUrl']
    
        if subtitle_url:
            # 如果有字幕的url，调用函数，下载字幕文件
            download_subtitle(subtitle_url, video_id)
        else:
            # 如果没有字幕的url，打印提示信息
            print('该视频没有字幕')
    
    def xml_caption_to_srt(xml_captions: str) -> str:
        segments = []
        root = ElementTree.fromstring(xml_captions)
        for i, child in enumerate(list(root)):
            caption = unescape(text.replace("\n", " ").replace("  ", " "), )
            try:
                duration = float(child.attrib["dur"])
            except KeyError:
                duration = 0.0
            start = float(child.attrib["start"])
            end = start + duration
            sequence_number = i + 1  # convert from 0-indexed to 1.
            line = "{seq}\n{start} --> {end}\n{text}\n".format(
                seq=sequence_number,
                start=float_to_srt_time_format(start),
                end=float_to_srt_time_format(end),
                text=caption,
            )
            segments.append(line)
        return "\n".join(segments).strip()
    
    def float_to_srt_time_format(d: float) -> str:
        time_fmt = time.strftime("%H:%M:%S,", time.gmtime(whole))
        ms = f"{fraction:.3f}".replace("0.", "")
        return time_fmt + ms
    
    # 输入一个视频的url，下载它的字幕文件
    if __name__ == '__main__':
    
        while True:
            video_url = input('请输入一个youtube视频的网址(例子:https://www.youtube.com/watch?v=wjTn)先复制再回来右击即可：')
            # video_url = "https://www.youtube.com/watch?v=wjTn_Ek"
            download_video_subtitle(video_url)
    
            if input('请输入0退出：') == 0:
                exit(0)

> 以上为部分代码哈! 隐藏的都是正则部分,会Python的都能自己补全哈!超简单的

[b991597777e247e59e5b0e22546bea41.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/03/14/3ad088ca6550432797d3ae91a8e64e45.png