#!/usr/bin/env python # -*- coding: UTF-8 -*- ''' @Project: NarratoAI @File : clip_video @Author : 小林同学 @Date : 2025/5/6 下午6:14 ''' import os import subprocess import json import hashlib from loguru import logger from typing import Dict, List, Optional from pathlib import Path def parse_timestamp(timestamp: str) -> tuple: """ 解析时间戳字符串，返回开始和结束时间 Args: timestamp: 格式为'HH:MM:SS-HH:MM:SS'或'HH:MM:SS,sss-HH:MM:SS,sss'的时间戳字符串 Returns: tuple: (开始时间, 结束时间) 格式为'HH:MM:SS'或'HH:MM:SS,sss' """ start_time, end_time = timestamp.split('-') return start_time, end_time def calculate_end_time(start_time: str, duration: float, extra_seconds: float = 1.0) -> str: """ 根据开始时间和持续时间计算结束时间 Args: start_time: 开始时间，格式为'HH:MM:SS'或'HH:MM:SS,sss'(带毫秒) duration: 持续时间，单位为秒 extra_seconds: 额外添加的秒数，默认为1秒 Returns: str: 计算后的结束时间，格式与输入格式相同 """ # 检查是否包含毫秒 has_milliseconds = ',' in start_time milliseconds = 0 if has_milliseconds: time_part, ms_part = start_time.split(',') h, m, s = map(int, time_part.split(':')) milliseconds = int(ms_part) else: h, m, s = map(int, start_time.split(':')) # 转换为总毫秒数 total_milliseconds = ((h * 3600 + m * 60 + s) * 1000 + milliseconds + int((duration + extra_seconds) * 1000)) # 计算新的时、分、秒、毫秒 ms_new = total_milliseconds % 1000 total_seconds = total_milliseconds // 1000 h_new = int(total_seconds // 3600) m_new = int((total_seconds % 3600) // 60) s_new = int(total_seconds % 60) # 返回与输入格式一致的时间字符串 if has_milliseconds: return f"{h_new:02d}:{m_new:02d}:{s_new:02d},{ms_new:03d}" else: return f"{h_new:02d}:{m_new:02d}:{s_new:02d}" def check_hardware_acceleration() -> Optional[str]: """ 检查系统支持的硬件加速选项 Returns: Optional[str]: 硬件加速参数，如果不支持则返回None """ # 检查NVIDIA GPU支持 try: nvidia_check = subprocess.run( ["ffmpeg", "-hwaccel", "cuda", "-i", "/dev/null", "-f", "null", "-"], stderr=subprocess.PIPE, stdout=subprocess.PIPE, text=True, check=False ) if nvidia_check.returncode == 0: return "cuda" except Exception: pass # 检查MacOS videotoolbox支持 try: videotoolbox_check = subprocess.run( ["ffmpeg", "-hwaccel", "videotoolbox", "-i", "/dev/null", "-f", "null", "-"], stderr=subprocess.PIPE, stdout=subprocess.PIPE, text=True, check=False ) if videotoolbox_check.returncode == 0: return "videotoolbox" except Exception: pass # 检查Intel Quick Sync支持 try: qsv_check = subprocess.run( ["ffmpeg", "-hwaccel", "qsv", "-i", "/dev/null", "-f", "null", "-"], stderr=subprocess.PIPE, stdout=subprocess.PIPE, text=True, check=False ) if qsv_check.returncode == 0: return "qsv" except Exception: pass return None def clip_video( video_origin_path: str, tts_result: List[Dict], output_dir: Optional[str] = None, task_id: Optional[str] = None ) -> Dict[str, str]: """ 根据时间戳裁剪视频 Args: video_origin_path: 原始视频的路径 tts_result: 包含时间戳和持续时间信息的列表 output_dir: 输出目录路径，默认为None时会自动生成 task_id: 任务ID，用于生成唯一的输出目录，默认为None时会自动生成 Returns: Dict[str, str]: 时间戳到裁剪后视频路径的映射 """ # 检查视频文件是否存在 if not os.path.exists(video_origin_path): raise FileNotFoundError(f"视频文件不存在: {video_origin_path}") # 如果未提供task_id，则根据输入生成一个唯一ID if task_id is None: content_for_hash = f"{video_origin_path}_{json.dumps(tts_result)}" task_id = hashlib.md5(content_for_hash.encode()).hexdigest() # 设置输出目录 if output_dir is None: output_dir = os.path.join( os.path.dirname(os.path.dirname(os.path.dirname(os.path.abspath(__file__)))), "storage", "temp", "clip_video", task_id ) # 确保输出目录存在 Path(output_dir).mkdir(parents=True, exist_ok=True) # 检查硬件加速支持 hwaccel = check_hardware_acceleration() hwaccel_args = [] if hwaccel: hwaccel_args = ["-hwaccel", hwaccel] logger.info(f"使用硬件加速: {hwaccel}") # 存储裁剪结果 result = {} for item in tts_result: _id = item.get("_id", item.get("timestamp", "unknown")) timestamp = item["timestamp"] start_time, _ = parse_timestamp(timestamp) # 根据持续时间计算真正的结束时间（加上1秒余量） duration = item["duration"] calculated_end_time = calculate_end_time(start_time, duration) # 转换为FFmpeg兼容的时间格式（逗号替换为点） ffmpeg_start_time = start_time.replace(',', '.') ffmpeg_end_time = calculated_end_time.replace(',', '.') # 格式化输出文件名（使用连字符替代冒号和逗号） safe_start_time = start_time.replace(':', '-').replace(',', '-') safe_end_time = calculated_end_time.replace(':', '-').replace(',', '-') output_filename = f"vid_{safe_start_time}@{safe_end_time}.mp4" output_path = os.path.join(output_dir, output_filename) # 构建FFmpeg命令 ffmpeg_cmd = [ "ffmpeg", "-y", *hwaccel_args, "-i", video_origin_path, "-ss", ffmpeg_start_time, "-to", ffmpeg_end_time, "-c:v", "h264_videotoolbox" if hwaccel == "videotoolbox" else "libx264", "-c:a", "aac", "-strict", "experimental", output_path ] # 执行FFmpeg命令 try: logger.info(f"裁剪视频片段: {timestamp} -> {ffmpeg_start_time}到{ffmpeg_end_time}") # logger.debug(f"执行命令: {' '.join(ffmpeg_cmd)}") process = subprocess.run( ffmpeg_cmd, stdout=subprocess.PIPE, stderr=subprocess.PIPE, text=True, check=True ) result[_id] = output_path except subprocess.CalledProcessError as e: logger.error(f"裁剪视频片段失败: {timestamp}") logger.error(f"错误信息: {e.stderr}") raise RuntimeError(f"视频裁剪失败: {e.stderr}") return result if __name__ == "__main__": video_origin_path = "/Users/apple/Desktop/home/NarratoAI/resource/videos/qyn2-2无片头片尾.mp4" tts_result = [{'timestamp': '00:00:00-00:01:15', 'audio_file': '/Users/apple/Desktop/home/NarratoAI/storage/tasks/qyn2-2-demo/audio_00_00_00-00_01_15.mp3', 'subtitle_file': '/Users/apple/Desktop/home/NarratoAI/storage/tasks/qyn2-2-demo/subtitle_00_00_00-00_01_15.srt', 'duration': 25.55, 'text': '好的各位，欢迎回到我的频道！《庆余年 2》刚开播就给了我们一个王炸！范闲在北齐"死"了？这怎么可能！上集片尾那个巨大的悬念，这一集就立刻揭晓了！范闲假死归来，他面临的第一个，也是最大的难关，就是如何面对他最敬爱的，同时也是最可怕的那个人——庆帝！'}, {'timestamp': '00:01:15-00:04:40', 'audio_file': '/Users/apple/Desktop/home/NarratoAI/storage/tasks/qyn2-2-demo/audio_00_01_15-00_04_40.mp3', 'subtitle_file': '/Users/apple/Desktop/home/NarratoAI/storage/tasks/qyn2-2-demo/subtitle_00_01_15-00_04_40.srt', 'duration': 13.488, 'text': '但我们都知道，他绝不可能就这么轻易退场！第二集一开场，范闲就已经秘密回到了京都。他的生死传闻，可不像我们想象中那样只是小范围流传，而是…'}, {'timestamp': '00:04:58-00:05:45', 'audio_file': '/Users/apple/Desktop/home/NarratoAI/storage/tasks/qyn2-2-demo/audio_00_04_58-00_05_45.mp3', 'subtitle_file': '/Users/apple/Desktop/home/NarratoAI/storage/tasks/qyn2-2-demo/subtitle_00_04_58-00_05_45.srt', 'duration': 21.363, 'text': '"欺君之罪"！在封建王朝，这可是抄家灭族的大罪！搁一般人，肯定脚底抹油溜之大吉了。但范闲是谁啊？他偏要反其道而行之！他竟然决定，直接去见庆帝！冒着天大的风险，用"假死"这个事实去赌庆帝的态度！'}, {'timestamp': '00:05:45-00:06:00', 'audio_file': '/Users/apple/Desktop/home/NarratoAI/storage/tasks/qyn2-2-demo/audio_00_05_45-00_06_00.mp3', 'subtitle_file': '/Users/apple/Desktop/home/NarratoAI/storage/tasks/qyn2-2-demo/subtitle_00_05_45-00_06_00.srt', 'duration': 7.675, 'text': '但想见庆帝，哪有那么容易？范闲艺高人胆大，竟然选择了最激进的方式——闯宫！'}] subclip_path_videos = { '00:00:00-00:01:15': '/Users/apple/Desktop/home/NarratoAI/storage/temp/clip_video/6e7e343c7592c7d6f9a9636b55000f23/vid-00-00-00-00-01-15.mp4', '00:01:15-00:04:40': '/Users/apple/Desktop/home/NarratoAI/storage/temp/clip_video/6e7e343c7592c7d6f9a9636b55000f23/vid-00-01-15-00-04-40.mp4', '00:04:41-00:04:58': '/Users/apple/Desktop/home/NarratoAI/storage/temp/clip_video/6e7e343c7592c7d6f9a9636b55000f23/vid-00-04-41-00-04-58.mp4', '00:04:58-00:05:45': '/Users/apple/Desktop/home/NarratoAI/storage/temp/clip_video/6e7e343c7592c7d6f9a9636b55000f23/vid-00-04-58-00-05-45.mp4', '00:05:45-00:06:00': '/Users/apple/Desktop/home/NarratoAI/storage/temp/clip_video/6e7e343c7592c7d6f9a9636b55000f23/vid-00-05-45-00-06-00.mp4', '00:06:00-00:06:03': '/Users/apple/Desktop/home/NarratoAI/storage/temp/clip_video/6e7e343c7592c7d6f9a9636b55000f23/vid-00-06-00-00-06-03.mp4', } # 使用方法示例 try: result = clip_video(video_origin_path, tts_result, subclip_path_videos) print("裁剪结果:") print(json.dumps(result, indent=4, ensure_ascii=False)) except Exception as e: print(f"发生错误: {e}")