python3获取视频文件播放时长的三种方法

from moviepy.editor import VideoFileClip


def get_duration_from_moviepy(url):
    clip = VideoFileClip(url)
    return clip.duration

pip install opencv-python

import cv2


def get_duration_from_cv2(filename):
  cap = cv2.VideoCapture(filename)
  if cap.isOpened():
    rate = cap.get(5)
    frame_num =cap.get(7)
    duration = frame_num/rate
    return duration
  return -1

pip install ffmpy3

import ffmpy3


def get_duration_from_ffmpeg(url):
    tup_resp = ffmpy3.FFprobe(
        inputs={url: None},
        global_options=[
            '-v', 'quiet',
            '-print_format', 'json',
            '-show_format', '-show_streams'
        ]
    ).run(stdout=subprocess.PIPE)

    meta = json.loads(tup_resp[0].decode('utf-8'))
    return meta['format']['duration']

import json
import subprocess
import time
import cv2
import ffmpy3
from moviepy.editor import VideoFileClip


ls = [
"https://test/1.mp4",
"http://test/2.mp4",
"https://test/3.mp4"
]


def get_duration_from_cv2(filename):
  cap = cv2.VideoCapture(filename)
  if cap.isOpened():
    rate = cap.get(5)
    frame_num =cap.get(7)
    duration = frame_num/rate
    return duration
  return -1


def get_duration_from_moviepy(url):
    clip = VideoFileClip(url)
    return clip.duration


def get_duration_from_ffmpeg(url):
    tup_resp = ffmpy3.FFprobe(
        inputs={url: None},
        global_options=[
            '-v', 'quiet',
            '-print_format', 'json',
            '-show_format', '-show_streams'
        ]
    ).run(stdout=subprocess.PIPE)

    meta = json.loads(tup_resp[0].decode('utf-8'))
    return meta['format']['duration']


for u in ls:
    t1 = time.time()
    p = get_duration_from_cv2(u)
    t2 = time.time()
    print('CV2 Duration: ', p, ' Time: ', t2 - t1)

    t1 = time.time()
    p = get_duration_from_moviepy(u)
    t2 = time.time()
    print('Moviepy Duration: ', p, ' Time: ', t2 - t1)

    t1 = time.time()
    p = get_duration_from_ffmpeg(u)
    t2 = time.time()
    print('FFMPEG Duration: ', p, ' Time: ', t2 - t1)
    print()