1.使用subprocess和re

import re
import subprocess
video = r"work/train/video/a8b96f016a28d8f3836f7cbb7734ecde.mp4"
import subprocessdef get_length(filename):result = subprocess.run(["ffprobe", "-v", "error", "-show_entries","format=duration", "-of","default=noprint_wrappers=1:nokey=1", filename],stdout=subprocess.PIPE,stderr=subprocess.STDOUT)return float(result.stdout)
t=get_length(video)
print(t)

2.使用VideoFileClip

from moviepy.editor import VideoFileClip
clip=VideoFileClip(video)
print(clip.duration)

使用cv2

import cv2
def get_video_duration(filename):cap = cv2.VideoCapture(filename)if cap.isOpened():rate = cap.get(5)frame_num =cap.get(7)duration = frame_num/ratereturn durationreturn -1
t=get_video_duration(video)
print(t)

从结果可以看出，cv2的运行时长是最短的，推荐使用cv2

https://blog.csdn.net/weixin_42076509/article/details/107127147