AI 生成内容强制标注落地：短视频平台怎么做，开发者怎么跟

#!/usr/bin/env python3
"""
video_labeler.py — 给 AI 生成视频注入合规元数据标签

使用方式：
  python video_labeler.py --input raw_video.mp4 --output labeled_video.mp4 \
    --gen-type ai_face_swap --model "StableDiffusionVideo-v2" --author "user_12345"

依赖：ffmpeg 需已安装并在 PATH 中
"""

import json
import subprocess
import argparse
import sys
from pathlib import Path
from datetime import datetime, timezone


# 合规标签结构 — 可按平台要求扩展字段
GENERATION_LABEL_SCHEMA = {
    "is_ai_generated": True,          # 必填：是否 AI 生成
    "generation_type": "",            # 必填：ai_face_swap / ai_voice / ai_text_assist / ai_full 等
    "model_name": "",                 # 推荐：生成所用模型
    "generation_timestamp": "",       # 必填：ISO8601 时间戳
    "author_id": "",                  # 必填：上传者/生成者 ID
    "platform_visible": True,         # 必填：标签是否对用户可见（合规要求为 True）
    "label_version": "v1",            # 推荐：标签格式版本，便于后续升级
}


def build_label(gen_type: str, model_name: str, author_id: str) -> dict:
    """构建合规元数据标签"""
    label = GENERATION_LABEL_SCHEMA.copy()
    label["generation_type"] = gen_type
    label["model_name"] = model_name
    label["author_id"] = author_id
    label["generation_timestamp"] = datetime.now(timezone.utc).isoformat()
    return label


def inject_metadata(video_path: str, output_path: str, label: dict) -> bool:
    """用 ffmpeg 将 JSON 标签写入视频文件的 -metadata 字段"""
    label_json = json.dumps(label, ensure_ascii=False)

    # ffmpeg 命令：拷贝流 + 写入 description 元数据
    cmd = [
        "ffmpeg", "-i", video_path,
        "-map", "0",           # 拷贝所有流（视频+音频+字幕）
        "-codec", "copy",      # 不重新编码，只改元数据
        "-metadata", f"description={label_json}",
        "-y",                  # 覆盖输出
        output_path,
    ]

    print(f"执行命令: {' '.join(cmd)}")
    result = subprocess.run(cmd, capture_output=True, text=True)

    if result.returncode != 0:
        print(f"ffmpeg 错误:\n{result.stderr}")
        return False
    print(f"标注完成 → {output_path}")
    return True


def extract_metadata(video_path: str) -> dict:
    """从视频文件中读回标签，验证透传完整性"""
    cmd = [
        "ffprobe", "-v", "quiet",
        "-print_format", "json",
        "-show_format",
        video_path,
    ]
    result = subprocess.run(cmd, capture_output=True, text=True)
    if result.returncode != 0:
        print(f"ffprobe 错误:\n{result.stderr}")
        return {}

    probe = json.loads(result.stdout)
    desc = probe.get("format", {}).get("tags", {}).get("description", "")
    if not desc:
        print("警告：未找到 description 元数据，标签可能丢失")
        return {}
    return json.loads(desc)


def main():
    parser = argparse.ArgumentParser(description="AI 生成视频合规标注工具")
    parser.add_argument("--input", required=True, help="输入视频路径")
    parser.add_argument("--output", required=True, help="输出视频路径")
    parser.add_argument("--gen-type", required=True,
                        choices=["ai_face_swap", "ai_voice", "ai_text_assist", "ai_full"],
                        help="AI 生成类型")
    parser.add_argument("--model", default="unknown", help="模型名称")
    parser.add_argument("--author", required=True, help="作者/上传者 ID")
    args = parser.parse_args()

    if not Path(args.input).exists():
        sys.exit(f"文件不存在: {args.input}")

    label = build_label(args.gen_type, args.model, args.author)
    print(f"标签内容:\n{json.dumps(label, indent=2, ensure_ascii=False)}")

    success = inject_metadata(args.input, args.output, label)
    if not success:
        sys.exit(1)

    # 验证：读回标签确认未丢失
    recovered = extract_metadata(args.output)
    if recovered:
        print(f"✅ 标签透传验证成功，读回内容与写入一致")
    else:
        print("❌ 标签透传验证失败，需检查转码管线")


if __name__ == "__main__":
    main()

<div class="video-card">
  <video src="labeled_video.mp4"></video>
  <!-- 合规标签层 — 不可点击移除，z-index 高于播放控件 -->
  <span class="ai-label" aria-label="本视频包含 AI 生成内容">AI 生成</span>
</div>

<style>
.ai-label {
  position: absolute;
  bottom: 12px;
  left: 12px;
  background: rgba(0,0,0,0.7);
  color: #fff;
  padding: 4px 10px;
  border-radius: 4px;
  font-size: 13px;
  font-weight: 600;
  z-index: 10;
  pointer-events: none;   /* 防止用户误点移除 */
  user-select: none;
}
</style>