python实现视频压缩功能_Python

python实现视频压缩功能

2021-08-15 23:59山有木兮I Python

这篇文章主要介绍了python实现视频压缩功能,本文通过实例代码给大家介绍的非常详细，对大家的学习或工作具有一定的参考借鉴价值，需要的朋友可以参考下

引言

实现一个视频压缩的功能，
性能优良压缩视频从61M 到 11M或者80M到15M
视频看起来没有太大损伤
缺点：耗时20s （win10，CPU：intel i7 8G运存）

python实现视频压缩功能

由于压缩运算需要占用CPU资源，所以时间和性能其实很难兼顾，这个是我个人比较满意的一版，记录一下

话不多说，直接上代码

视频压缩：

# 视频压缩第二版
import sys
import os
import zlib
import threading
import platform
from PIL import Image
class Compress_Pic_or_Video(object):
def __init__(self,filePath,inputName,outName=""):
self.filePath = filePath #文件地址
self.inputName = inputName #输入的文件名字
self.outName = outName #输出的文件名字
self.system_ = platform.platform().split("-",1)[0]
if self.system_ == "Windows":
self.filePath = (self.filePath + "\\") if self.filePath.rsplit("\\",1)[-1] else self.filePath
elif self.system_ == "Linux":
self.filePath = (self.filePath + "/") if self.filePath.rsplit("/",1)[-1] else self.filePath
self.fileInputPath = self.filePath + inputName
self.fileOutPath = self.filePath + outName
@property
def is_video(self):
videoSuffixSet = {"WMV","ASF","ASX","RM","RMVB","MP4","3GP","MOV","M4V","AVI","DAT","MKV","FIV","VOB"}
suffix = self.fileInputPath.rsplit(".",1)[-1].upper()
if suffix in videoSuffixSet:
return True
else:
return False
def SaveVideo(self):
fpsize = os.path.getsize(self.fileInputPath) / 1024
if fpsize >= 150.0: #大于150KB的视频需要压缩
if self.outName:
compress = "ffmpeg -i {} -r 10 -pix_fmt yuv420p -vcodec libx264 -preset veryslow -profile:v baseline -crf 23 -acodec aac -b:a 32k -strict -5 {}".format(self.fileInputPath,self.fileOutPath)
isRun = os.system(compress)
else:
compress = "ffmpeg -i {} -r 10 -pix_fmt yuv420p -vcodec libx264 -preset veryslow -profile:v baseline -crf 23 -acodec aac -b:a 32k -strict -5 {}".format(self.fileInputPath, self.fileInputPath)
isRun = os.system(compress)
if isRun != 0:
return (isRun,"没有安装ffmpeg")
return True
else:
return True
def Compress_Video(self):
# 异步保存打开下面的代码，注释同步保存的代码
thr = threading.Thread(target=self.SaveVideo)
thr.start()
#下面为同步代码
# fpsize = os.path.getsize(self.fileInputPath) / 1024
# if fpsize >= 150.0: # 大于150KB的视频需要压缩
# compress = "ffmpeg -i {} -r 10 -pix_fmt yuv420p -vcodec libx264 -preset veryslow -profile:v baseline -crf 23 -acodec aac -b:a 32k -strict -5 {}".format(
# self.fileInputPath, self.fileOutPath)
# isRun = os.system(compress)
# if isRun != 0:
# return (isRun, "没有安装ffmpeg")
# return True
# else:
# return True
if __name__ == "__main__":
b = sys.argv[1:] #测试压缩
savevideo = Compress_Pic_or_Video(b[0],b[1],b[2])
print(savevideo.Compress_Video())
# 这一版性能优良压缩从61M 到 11M 视频看起来没有太大损伤缺点：inteli7 8G运存耗时20s