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抖音视频下载脚本（无水印）
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| #!/usr/bin/env python3 | |
| """ | |
| 抖音视频下载脚本 | |
| 支持： | |
| - 短链接: https://v.douyin.com/xxxxx/ | |
| - 分享文本（含短链） | |
| - 视频直链: https://www.douyin.com/video/1234567890 | |
| 用法: | |
| python3 douyin_download.py <链接或分享文本> [输出文件名] | |
| 示例: | |
| python3 douyin_download.py "https://v.douyin.com/FKWYQmtQ79E/" | |
| python3 douyin_download.py "7.15 复制打开抖音... https://v.douyin.com/FKWYQmtQ79E/" my_video.mp4 | |
| """ | |
| import sys | |
| import re | |
| import json | |
| import urllib.request | |
| import urllib.error | |
| import os | |
| MOBILE_UA = "Mozilla/5.0 (iPhone; CPU iPhone OS 16_0 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/16.0 Mobile/15E148 Safari/604.1" | |
| def extract_url(text: str) -> str: | |
| """从分享文本中提取第一个 URL""" | |
| m = re.search(r'https?://[^\s]+', text) | |
| if not m: | |
| raise ValueError("未找到有效链接") | |
| return m.group(0) | |
| def resolve_short_url(url: str) -> str: | |
| """跟随重定向，拿到最终 URL""" | |
| req = urllib.request.Request(url, headers={"User-Agent": MOBILE_UA}) | |
| try: | |
| resp = urllib.request.urlopen(req, timeout=10) | |
| return resp.url | |
| except urllib.error.HTTPError as e: | |
| return e.url or url | |
| def extract_video_id(url: str) -> str: | |
| """从 URL 中提取 video ID""" | |
| m = re.search(r'/video/(\d+)', url) | |
| if not m: | |
| raise ValueError(f"无法从 URL 提取 video ID: {url}") | |
| return m.group(1) | |
| def get_play_uri(video_id: str) -> tuple[str, str]: | |
| """ | |
| 访问分享页，从 _ROUTER_DATA 中提取播放 URI 和视频标题 | |
| 返回 (uri, title) | |
| """ | |
| share_url = f"https://www.iesdouyin.com/share/video/{video_id}/" | |
| req = urllib.request.Request(share_url, headers={ | |
| "User-Agent": MOBILE_UA, | |
| "Referer": "https://www.douyin.com/", | |
| }) | |
| resp = urllib.request.urlopen(req, timeout=15) | |
| html = resp.read().decode("utf-8", errors="ignore") | |
| # 提取 _ROUTER_DATA JSON | |
| m = re.search(r'window\._ROUTER_DATA\s*=\s*(\{.+?\})\s*</script>', html, re.DOTALL) | |
| if not m: | |
| raise ValueError("页面中未找到 _ROUTER_DATA，可能需要登录") | |
| data = json.loads(m.group(1)) | |
| def find_item_list(obj, depth=0): | |
| if depth > 10: | |
| return None | |
| if isinstance(obj, dict): | |
| if 'item_list' in obj: | |
| return obj['item_list'] | |
| for v in obj.values(): | |
| r = find_item_list(v, depth + 1) | |
| if r: | |
| return r | |
| elif isinstance(obj, list): | |
| for item in obj: | |
| r = find_item_list(item, depth + 1) | |
| if r: | |
| return r | |
| return None | |
| items = find_item_list(data) | |
| if not items: | |
| raise ValueError("未找到视频信息") | |
| item = items[0] | |
| title = item.get('desc', video_id)[:50] # 截断避免文件名过长 | |
| aweme_type = item.get('aweme_type') | |
| video = item.get('video', {}) | |
| play_addr = video.get('play_addr', {}) | |
| uri = play_addr.get('uri', '') | |
| if not uri: | |
| raise ValueError(f"未找到播放地址（aweme_type={aweme_type}，可能是图文笔记）") | |
| # 如果 uri 已经是完整 URL，直接返回；否则拼接 | |
| if uri.startswith('http'): | |
| return uri, title | |
| return uri, title | |
| def download_video(uri: str, output_path: str): | |
| """下载视频到本地文件""" | |
| # uri 可能是完整 URL，也可能是 video_id 字符串 | |
| if uri.startswith('http'): | |
| play_url = uri | |
| else: | |
| play_url = f"https://aweme.snssdk.com/aweme/v1/play/?video_id={uri}&ratio=720p&line=0" | |
| print(f"下载地址: {play_url}") | |
| req = urllib.request.Request(play_url, headers={"User-Agent": MOBILE_UA}) | |
| with urllib.request.urlopen(req, timeout=60) as resp, open(output_path, 'wb') as f: | |
| total = int(resp.headers.get('Content-Length', 0)) | |
| downloaded = 0 | |
| chunk = 64 * 1024 | |
| while True: | |
| data = resp.read(chunk) | |
| if not data: | |
| break | |
| f.write(data) | |
| downloaded += len(data) | |
| if total: | |
| pct = downloaded / total * 100 | |
| print(f"\r 进度: {pct:.1f}% ({downloaded // 1024 // 1024}MB / {total // 1024 // 1024}MB)", end='', flush=True) | |
| print() | |
| def sanitize_filename(name: str) -> str: | |
| """清理文件名中的非法字符""" | |
| name = re.sub(r'[\\/:*?"<>|]', '_', name) | |
| name = name.strip() | |
| return name or "video" | |
| def main(): | |
| if len(sys.argv) < 2: | |
| print(__doc__) | |
| sys.exit(1) | |
| input_text = sys.argv[1] | |
| output_arg = sys.argv[2] if len(sys.argv) > 2 else None | |
| print(f"[1/4] 提取链接...") | |
| url = extract_url(input_text) | |
| print(f" URL: {url}") | |
| # 如果是短链，先展开 | |
| if 'v.douyin.com' in url or len(url) < 50: | |
| print(f"[2/4] 解析短链...") | |
| url = resolve_short_url(url) | |
| print(f" 展开: {url}") | |
| else: | |
| print(f"[2/4] 跳过短链解析") | |
| print(f"[3/4] 提取视频 ID 和播放地址...") | |
| video_id = extract_video_id(url) | |
| print(f" Video ID: {video_id}") | |
| uri, title = get_play_uri(video_id) | |
| print(f" 标题: {title}") | |
| print(f" URI: {uri[:80]}...") | |
| # 确定输出路径 | |
| if output_arg: | |
| output_path = output_arg | |
| else: | |
| safe_title = sanitize_filename(title) | |
| output_path = f"{safe_title}.mp4" | |
| print(f"[4/4] 下载视频 → {output_path}") | |
| download_video(uri, output_path) | |
| size_mb = os.path.getsize(output_path) / 1024 / 1024 | |
| print(f"\n✅ 完成！文件: {output_path} ({size_mb:.1f}MB)") | |
| if __name__ == '__main__': | |
| main() |
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