Python脚本实现音频和视频格式转换

from pydub import audiosegment
import os
 
 
def convert_audio(input_dir, output_dir, target_format):
    if not os.path.exists(output_dir):
        os.makedirs(output_dir)
 
    for filename in os.listdir(input_dir):
        if filename.endswith(('.mp3', '.wav', '.ogg')):
            input_path = os.path.join(input_dir, filename)
            output_filename = os.path.splitext(filename)[0] + f".{target_format}"
            output_path = os.path.join(output_dir, output_filename)
 
            audio = audiosegment.from_file(input_path)
            audio.export(output_path, format=target_format)
            print(f"converted {filename} to {output_filename}")
 
 
convert_audio("./input_audio", "./output_audio", "mp3")

from moviepy import *
 
def convert_video_format(input_path, output_path):
    """将视频转换为不同格式"""
    try:
        video = videofileclip(input_path)
        video.write_videofile(output_path)
        video.close()
        print(f"转换完成: {output_path}")
    except exception as e:
        print(f"转换失败: {str(e)}")
 
# 使用示例
convert_video_format("input.mp4", "output.avi")

# coding=utf-8
import os, sys
import subprocess
from scipy.io import wavfile

def ffmpeg_videotoaudio(videopath, wavpath):
    # 提取视频路径下所有文件名
    videos = os.listdir(videopath)
    count = 0
    for video in videos:
        # 提取视频的全路径名（含路径+文件名）
        video_path = videopath + "\\" + video
        # 合成输出音频的全路径名（不含后缀）
        wav_path = wavpath + "\\" + os.path.splitext(video)[0]
        # 提取视频中的音频信息
        strcmd = "ffmpeg -i " + video_path + " -f wav " + wav_path + ".wav"
        subprocess.call(strcmd, shell=true)

videopath = r'd:\videos'
wavpath = r'd:\audios'
ffmpeg_videotoaudio(videopath,wavpath)

# coding=gb2312
import string
import os
import time
import re
import sys
from optparse import optionparser
parser = optionparser()
#parser.add_option("-i", "--input", dest="input",action="store_true",help="input x y for each file by user")
parser.add_option("-q", "--quality", dest="q",action="store",help="input xvid q arg",default="24")
parser.add_option("-v", "--vcodec", dest="vcodec",action="store",help="input video codec",default="x264")
parser.add_option("-n", "--noaudio", dest="an",action="store_true",help="no audio")
parser.add_option("-p", "--preset", dest="preset",action="store",help="",default="")
parser.add_option("-m", "--maxwidth", dest="maxwidth",action="store",help="input max width for output video",default="")
parser.add_option("-f", "--filetype", dest="filetype",action="store",help="",default="mp4")
parser.add_option("-o", "--ogg", dest="ogg",action="store_true",help="user ogg instead of aac",default="")
parser.add_option("-3", "--mp3", dest="mp3",action="store_true",help="user mp3 instead of aac",default="")
parser.add_option("-1", "--pad", dest="pad",action="store_true",help="pad to 16:9",default="")
parser.add_option("-s", "--src", dest="srcd",action="store",help="source dir",default="/usr/disk2/root/video/origin")
parser.add_option("-t", "--target", dest="targetd",action="store",help="target dir",default="/usr/disk2/root/video/ok")
parser.add_option("-w", "--workdir", dest="workdir",action="store",help="work dir",default="/root/root2/video")
(options, args) = parser.parse_args()
if options.srcd==none or options.srcd[0:1]=='-':
print 'srcd err, quit'
exit()
if options.targetd==none or options.targetd[0:1]=='-':
print 'targetd err, quit'
exit()
if options.filetype==none or options.filetype[0:1]=='-':
print 'filetype err, quit'
exit()
if options.workdir==none or options.workdir[0:1]=='-':
print 'workdir err, quit'
exit()
#遍历origin下的文件
for root,dirs,files in os.walk(options.srcd):
for name in files:
name= name.replace('[','''\[''')#对文件名中的[进行转义
newname =name[0: name.rindex('.')]
#运行一次ffmpeg,获取分辨率
(si, so, se) = os.popen3('cd '+options.workdir+';mkdir -p ffm; rm -f ffm/ffm.txt ; csh -c "(ffmpeg -i '+options.srcd+'/' +name+ ' >& ffm/ffm.txt)"; grep stream ffm/ffm.txt')
t=so.readlines()
ti=0
for line in se.readlines() :
print line
width=0
height=0
reg='''^\s*stream.*,\s*(\d+)x(\d+)(?: \[sar|,)'''
#stream #0.0: video: rv40 / 0x30345652, 1020x572, 23 fps, 23 tbr, 23 tbn, 23 tbc
for line in t:
result = re.compile(reg).findall(line)
for c in result:
print name+' '+c[0] + 'x' + c[1]
width=string.atoi(c[0])
height=string.atoi(c[1])
if name[0:3]=='m2u' and width==720 and height==576:#m2u开头的，宽度是720x576的，是4：3存储16：9的，将其转换为16：9
width=1024
if width==0:
print 'error parsing width and height'
exit()
vc=''
qstr=''
astr=''
vpre=''
s=''
if options.maxwidth!='':
if width>string.atoi(options.maxwidth):
height = height * string.atoi(options.maxwidth) / width
width = string.atoi(options.maxwidth)
padstr=''
if options.pad==true:
if height*16/9 - width>10:#宽度不够
padstr=' -vf "pad='+str(height*16/9)+':'+str(height)+':'+str((height*16/9 - width)/2)+':0:black"'
elif width - height*16/9 >10:#高度不够
padstr=' -vf "pad='+str(width)+':'+str(width*9/16)+':0:'+str((width - height*16/9)/2)+':black"'
s=' -s '+str(width)+'x'+str(height)+padstr
print 'adjust',s
if options.preset!='':
vpre=' -vpre '+options.preset
if options.an==true:
astr=' -an'
elif options.ogg==true:
astr=' -acodec libvorbis -ar 44100 -ab 64k'
elif options.mp3==true:
astr=' -acodec libmp3lame -ar 44100 -ab 64k'
else:
astr=' -acodec libfaac -ar 44100 -ab 64k'
if options.vcodec=='vp8':
vc='libvpx'
qstr=" -qmin "+options.q+" -qmax "+options.q
elif options.vcodec=='x264':
vc='libx264'
qstr=" -crf "+options.q
elif options.vcodec=='xvid':
vc='libxvid'
qstr=" -qmin "+options.q+" -qmax "+options.q
cmd ='csh -c "' + "cd "+options.workdir+";touch ffm/output.log;(ffmpeg -y -i "+options.srcd+"/"+name+astr+" -vcodec "+vc+vpre+qstr+s+" -r 25 -threads 8 "+options.targetd+"/"+newname+"."+options.filetype + ' >>& ffm/output.log)"'
print cmd
#运行
(si, so, se) = os.popen3(cmd)
for line in se.readlines() :#打印输出
print line
for line in so.readlines() :#打印输出
print line
#print cmd,' finish'#再显示一次命令