ffmpeg -y -i input.mp4 -vn -codec copy out.m4a
ffmpeg -i out.m4a -f segment -segment_time 55 -c copy out.m4a%03d.m4a# 提取视频中的音频 mp4 - m4a
for %i in (*.mp4) do ffmpeg -i %i -vn -codec copy %i-out.m4a# 音频按时间分割 - m4a
for %i in (*.m4a) do ffmpeg -i %i -f segment -segment_time 55 -c copy %i-%03d-.m4a# 批量转换音频格式为pcm(参数设置)
for %i in (*-.m4a) do ffmpeg -i %i -acodec pcm_s16le -f s16le -ac 1 -ar 16000 %i-new.pcm

import os
from aip import AipSpeech
from mydocx import *
from tqdm import tqdmclass AudioToText:''' 利用 FFmpeg 提取视频中的语音并转换为文本文档'''def __init__(self):self.document = Document()self.document.styles['Normal'].font.name = u'微软雅黑'self.document.styles['Normal']._element.rPr.rFonts.set(qn('w:eastAsia'), u'微软雅黑')""" 你的 APPID AK SK """APP_ID = '*'API_KEY = '*'SECRET_KEY = '*'self.client = AipSpeech(APP_ID, API_KEY, SECRET_KEY)def get_path_files(self, path, type='.pcm'):'''获取目录下所有的 pcm文件:param path: 目录地址:param type: 文件类型:return: 包含文件路径的列表'''files = os.listdir(path)new = []for i in files:name, ty = os.path.splitext(i)if ty == type:pathFile = os.path.join(path,i)new.append(pathFile)return newdef get_file_content(self, filePath):'''文件读取 content:param filePath: 文件包含路径:return:content'''with open(filePath, 'rb') as fp:return fp.read()def read_pcm(self, filename):'''识别pcm语音文件 转文字:param filename: 文件名称:return: 识别结果'''result = self.client.asr(self.get_file_content(filename), 'pcm', 16000, {'dev_pid': 1537,})# baidu-api没想到这么脆弱！try:if result['err_msg'] == 'success.':word = result['result'][0] + "nn"else:word = str(result['err_no']) + str(result['err_msg']) + "nn"except:word = str(result) + "nn"# print(word)return word,result['err_no']def GoWalkPath(self, path):'''获取所有文件夹的地址'''videoPathList = []for f_path, dir_name, f_names in os.walk(path):if  f_path != path:videoPathList.append(f_path)# print(f_path)return videoPathListdef main(self, path):'''运行语音转文字并保持word文档'''pathList = self.GoWalkPath(path)if len(pathList) > 0:for _path in pathList:files = self.get_path_files(_path)for i in tqdm(range(0, len(files))):wd,err = self.read_pcm(files[i])if err ==0:totle_level(self.document, files[i])body(self.document, wd )else:body(self.document, wd, True)try:name = _path.split('')[-1]_filePath = os.path.join(_path, name)saveFile(self.document, _filePath)except Exception as e:print(e)else:print("目录下无文件夹")if __name__ == '__main__':# pcm 音频路径path = "video"t = AudioToText()t.main(path)