How to get video file duration and resolution in python

duration.py

from subprocess import Popen, PIPE
import re

def getvideodetails(filepath):
    cmd = "avconv -i %s" % filepath
    p = Popen(cmd, shell=True, stdout=PIPE, stderr=PIPE)
    di = p.communicate()
    for line in di:
        if line.rfind("Duration") > 0:
            duration = re.findall("Duration: (\d+:\d+:[\d.]+)", line)[0]
        if line.rfind("Video") > 0:
            resolution = re.findall("(\d+x\d+)", line)[0]
    return duration,resolution

# call function with file path
getvideodetails("/home/bala/sample.mp4") # change this line to your video file path

Incase avconv command not found, In debain based systems
sudo apt-get install libav-tools