如何使用Python语言利用MoviePy批量一次性压缩同一个文件夹下的所有视频至合适大小

这个代码的说明和视频演示见视频

Bilibili视频演示

from moviepy.editor import *

SourcePath = "E:\Lecture\Linear Algebra\Work\2 矩阵及其运算\2.3 逆矩阵（闭环管理阶段）"
FileList = []
FileName = []
for a, b, c in os.walk(SourcePath):
    for name in c:
        fname = os.path.join(a, name)
        if fname.endswith(".mp4"):
            FileList.append(fname)
            FileName.append(name)
print(FileList)
print(FileName)

for i in range(len(FileList)):
    clip = VideoFileClip(FileList[i])
    clip = clip.resize((1280, 720))
    OutputName = os.path.join(SourcePath, FileName[i][:-4]+'_small.mp4')
    clip.write_videofile(OutputName, bitrate='2500000', threads=1)