如何在python中获取视频的持续时间?

您可能需要调用一个外部程序。 ffprobe 可以向您提供以下信息:

import subprocess

def getLength(filename):
  result = subprocess.Popen(["ffprobe", filename],
    stdout = subprocess.PIPE, stderr = subprocess.STDOUT)
  return [x for x in result.stdout.readlines() if "Duration" in x]

为了使事情简单一点,下面的代码将输出 杰森 .

你可以用它 probe(filename) 或通过使用获取持续时间 duration(filename) :

json_info     = probe(filename)
secondes_dot_ = duration(filename) # float number of seconds

它工作在 Ubuntu 14.04 当然在哪 ffprobe 安装。代码并不是为了速度或漂亮的目的而优化的,但它在我的机器上工作,希望它能有所帮助。

#
# Command line use of 'ffprobe':
#
# ffprobe -loglevel quiet -print_format json \
#         -show_format    -show_streams \
#         video-file-name.mp4
#
# man ffprobe # for more information about ffprobe
#

import subprocess32 as sp
import json


def probe(vid_file_path):
    ''' Give a json from ffprobe command line

    @vid_file_path : The absolute (full) path of the video file, string.
    '''
    if type(vid_file_path) != str:
        raise Exception('Gvie ffprobe a full file path of the video')
        return

    command = ["ffprobe",
            "-loglevel",  "quiet",
            "-print_format", "json",
             "-show_format",
             "-show_streams",
             vid_file_path
             ]

    pipe = sp.Popen(command, stdout=sp.PIPE, stderr=sp.STDOUT)
    out, err = pipe.communicate()
    return json.loads(out)


def duration(vid_file_path):
    ''' Video's duration in seconds, return a float number
    '''
    _json = probe(vid_file_path)

    if 'format' in _json:
        if 'duration' in _json['format']:
            return float(_json['format']['duration'])

    if 'streams' in _json:
        # commonly stream 0 is the video
        for s in _json['streams']:
            if 'duration' in s:
                return float(s['duration'])

    # if everything didn't happen,
    # we got here because no single 'return' in the above happen.
    raise Exception('I found no duration')
    #return None


if __name__ == "__main__":
    video_file_path = "/tmp/tt1.mp4"
    duration(video_file_path) # 10.008

如本文所述 https://www.reddit.com/r/moviepy/comments/2bsnrq/is_it_possible_to_get_the_length_of_a_video/

你可以使用电影模块

from moviepy.editor import VideoFileClip
clip = VideoFileClip("my_video.mp4")
print( clip.duration )

找到这个新的python库: https://github.com/sbraz/pymediainfo

要获取持续时间:

from pymediainfo import MediaInfo
media_info = MediaInfo.parse('my_video_file.mov')
#duration in milliseconds
duration_in_ms = media_info.tracks[0].duration

上面的代码是根据一个有效的MP4文件测试的,可以工作,但是您应该做更多的检查,因为它严重依赖于MediaInfo的输出。

from subprocess import check_output

file_name = "movie.mp4"

#For Windows
a = str(check_output('ffprobe -i  "'+file_name+'" 2>&1 |findstr "Duration"',shell=True)) 

#For Linux
#a = str(check_output('ffprobe -i  "'+file_name+'" 2>&1 |grep "Duration"',shell=True)) 

a = a.split(",")[0].split("Duration:")[1].strip()

h, m, s = a.split(':')
duration = int(h) * 3600 + int(m) * 60 + float(s)

print(duration)

打开命令终端,安装python包: mutagen 使用此命令

python -m pip install mutagen

然后使用此代码获取视频持续时间及其大小:

import os
from mutagen.mp4 import MP4

audio = MP4("filePath")

print(audio.info.length)
print(os.path.getsize("filePath"))

对于任何喜欢使用 媒体信息 程序:

import json
import subprocess

#===============================
def getMediaInfo(mediafile):
    cmd = "mediainfo --Output=JSON %s"%(mediafile)
    proc = subprocess.Popen(cmd, shell=True,
        stderr=subprocess.PIPE, stdout=subprocess.PIPE)
    stdout, stderr = proc.communicate()
    data = json.loads(stdout)
    return data

#===============================
def getDuration(mediafile):
    data = getMediaInfo(mediafile)
    duration = float(data['media']['track'][0]['Duration'])
    return duration

我想到的功能。这基本上是在使用 只有 ffprobe 论据

from subprocess import  check_output, CalledProcessError, STDOUT 


def getDuration(filename):

    command = [
        'ffprobe', 
        '-v', 
        'error', 
        '-show_entries', 
        'format=duration', 
        '-of', 
        'default=noprint_wrappers=1:nokey=1', 
        filename
      ]

    try:
        output = check_output( command, stderr=STDOUT ).decode()
    except CalledProcessError as e:
        output = e.output.decode()

    return output


fn = '/app/648c89e8-d31f-4164-a1af-034g0191348b.mp4'
print( getDuration(  fn ) )

输出持续时间如下:

7.338000