如何使用Python批量处理视频文件，借助ffmpeg开源视频处理库？

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python原始伪创新开头内容在数字化时代，创新已成为推动社会进步的重要力量。以下是一些创新的示例：

1.人工智能在医疗领域的应用，如智能诊断系统。

2.可持续能源技术的研发，如太阳能和风能。

3.互联网+行动计划，推动传统产业升级。

简化改写后的开头内容数字化时代，创新至关重要。例如：人工智能在医疗、可持续能源和互联网+行动计划。

代码示例

# coding=utf-8 import os import subprocess import datetime import json, pprint import re, time import threading import random import shutil class FFmpeg: def __init__(self, editvdo, addlogo=None, addmusic=None, addvdohead=None, addvdotail=None): self.editvdo = editvdo self.addlogo = addlogo self.addmusic = addmusic self.addvdohead = addvdohead self.addvdotail = addvdotail self.vdo_time, self.vdo_width, self.vdo_height, self.attr_dict = self.get_attr() self.editvdo_path = os.path.dirname(editvdo) self.editvdo_name = os.path.basename(editvdo) def get_attr(self): """ 获取视频属性参数 :return: """ strcmd = r'ffprobe -print_format json -show_streams -i "{}"'.format(self.editvdo) status, output = subprocess.getstatusoutput(strcmd) agrs = eval(re.search('{.*}', output, re.S).group().replace("\n", "").replace(" ", '')) streams = agrs.get('streams', []) agrs_dict = dict() [agrs_dict.update(x) for x in streams] vdo_time = agrs_dict.get('duration') vdo_width = agrs_dict.get('width') vdo_height = agrs_dict.get('height') attr = (vdo_time, vdo_width, vdo_height, agrs_dict) return attr def edit_head(self, start_time, end_time, deposit=None): """ 截取指定长度视频 :param second: 去除开始的多少秒 :param deposit: 另存为文件 :return: True/Flase """ if None == deposit: deposit = self.editvdo_path+'/'+'edit_head'+self.editvdo_name start = time.strftime('%H:%M:%S', time.gmtime(start_time)) end = time.strftime('%H:%M:%S', time.gmtime(end_time)) strcmd = 'ffmpeg -i "{}" -vcodec copy -acodec copy -ss {} -to {} "{}" -y'.format( self.editvdo, start, end, deposit) result = subprocess.run(args=strcmd, stdout=subprocess.PIPE, shell=True) if os.path.exists(deposit): os.remove(self.editvdo) os.rename(deposit, self.editvdo) return True else: return False def edit_logo(self, deposit=None): """ 添加水印 :param deposit:添加水印后另存为路径，为空则覆盖 :return: True/False """ if None == deposit: deposit = self.editvdo_path+'/'+'edit_logo'+self.editvdo_name strcmd = r'ffmpeg -i "{}" -vf "movie=\'{}\' [watermark];[in] ' \ r'[watermark] overlay=main_w-overlay_w-10:10 [out]" "{}"'.format( self.editvdo, self.addlogo, deposit) result = subprocess.run(args=strcmd, stdout=subprocess.PIPE, shell=True) if os.path.exists(deposit): os.remove(self.editvdo) os.rename(deposit, self.editvdo) return True else: return False def edit_music(self, deposit=None): if None == deposit: deposit = self.editvdo_path+'/'+'edit_music'+self.editvdo_name strcmd = r'ffmpeg -y -i "{}" -i "{}" -filter_complex "[0:a] ' \ r'pan=stereo|c0=1*c0|c1=1*c1 [a1], [1:a] ' \ r'pan=stereo|c0=1*c0|c1=1*c1 [a2],[a1][a2]amix=duration=first,' \ r'pan=stereo|c0<c0+c1|c1<c2+c3,pan=mono|c0=c0+c1[a]" ' \ r'-map "[a]" -map 0:v -c:v libx264 -c:a aac ' \ r'-strict -2 -ac 2 "{}"'.format(self.editvdo, self.addmusic, deposit) result = subprocess.run(args=strcmd, stdout=subprocess.PIPE, shell=True) if os.path.exists(deposit): os.remove(self.editvdo) os.rename(deposit, self.editvdo) return True else: return False def edit_rate(self, rete=30, deposit=None): """ 改变帧率 :param rete: 修改大小帧率 :param deposit: 修改后保存路径 :return: """ if None == deposit: deposit = self.editvdo_path+'/'+'edit_music'+self.editvdo_name strcmd = r'ffmpeg -i "{}" -r {} "{}"' % (self.editvdo, rete, deposit) result = subprocess.run(args=strcmd, stdout=subprocess.PIPE, shell=True) if os.path.exists(deposit): os.remove(self.editvdo) os.rename(deposit, self.editvdo) return True else: return False def edit_power(self, power='1280x720', deposit=None): """ 修改分辨率 :param power: 分辨率 :param deposit: 修改后保存路径，为空则覆盖 :return: """ if None == deposit: deposit = self.editvdo_path+'/'+'edit_power'+self.editvdo_name strcmd = r'ffmpeg -i "{}" -s {} "{}"'.format(self.editvdo, power, deposit) result = subprocess.run(args=strcmd, stdout=subprocess.PIPE, shell=True) if os.path.exists(deposit): os.remove(self.editvdo) os.rename(deposit, self.editvdo) return True else: return False def rdit_marge(self, vdo_head, vdo_tail, deposit=None): if None == deposit: deposit = self.editvdo_path+'/'+'rdit_marge'+self.editvdo_name with open(self.editvdo_path+'/'+'rdit_marge.txt', 'w', encoding='utf-8') as f: f.write("file '{}' \nfile '{}' \nfile '{}'" .format( vdo_head, self.editvdo, vdo_tail)) strcmd = r'ffmpeg -f concat -safe 0 -i "{}" -c copy "{}"'.format( self.editvdo_path + '/' + 'rdit_marge.txt', deposit) result = subprocess.run(args=strcmd, stdout=subprocess.PIPE, shell=True) if os.path.exists(deposit): os.remove(self.editvdo) os.rename(deposit, self.editvdo) return True else: return False # ffmpeg - i input.mkv - filter_complex "[0:v]setpts=0.5*PTS[v];[0:a]atempo=2.0[a]" - map"[v]" - map"[a]" output.mkv test = FFmpeg(r"D:\vdio\4.mp4") pass

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