Get basic information of media file from FFmpeg's command line output.

ffmediainfo.py

#!/usr/bin/env python2.7

import subprocess as subp
import sys
import re

bitratePtn = re.compile(r'^\s*Duration:.+, (bitrate: (\d+) kb/s).*$')

videoPtn = re.compile(r'^\s*Stream #\d+:\d+.*?: Video: ([^,]+).*$')
audioPtn = re.compile(r'^\s*Stream #\d+:\d+.*?: Audio: ([^,]+).*$')

resolutionPtn = re.compile(r'^.*?(\d{1,4}x\d{1,4})[, ].*$')
hzPtn = re.compile(r'^.*?(\d+ Hz).*$')
sbitratePtn = re.compile(r'^.*?(\d+ kb/s).*$')
fpsPtn = re.compile(r'^.*?(\d+(\.\d+)?) fps,.*$')

def mediainfo(filename):
	bitrate = ''
	vbitrate = ''
	abitrate = ''
	resolution = ''
	vcodec = ''
	acodec = ''
	hz = ''
	fps = ''
	cmd = subp.Popen(['ffmpeg', '-hide_banner','-i', filename], stdout = subp.PIPE, stderr = subp.PIPE)
	for l in cmd.stderr:
		l = l.strip()

		if not bitrate:
			a = bitratePtn.match(l)
			if a:
				bitrate = a.group(2)
				continue
		if not vcodec:
			a = videoPtn.match(l)
			if a:
				vcodec = a.group(1).split()[0]
				try:
					resolution = resolutionPtn.match(l).group(1).split('x')
				except AttributeError:
					pass
				try:
					vbitrate = sbitratePtn.match(l).group(1).split()[0]
				except AttributeError:
					pass
				try:
					fps = fpsPtn.match(l).group(1).split()[0]
				except AttributeError:
					pass
				continue
		if not acodec:
			a = audioPtn.match(l)
			if a:
				acodec = a.group(1).split()[0]
				try:
					hz = hzPtn.match(l).group(1).split()[0]
				except AttributeError:
					pass
				try:
					abitrate = sbitratePtn.match(l).group(1).split()[0]
				except AttributeError:
					pass
				continue
	cmd.wait()
	return {'bitrate':bitrate, "vcodec":vcodec, 'resolution':resolution,
			'vbitrate':vbitrate, 'fps':fps, 
			"acodec":acodec, "sampling":hz, 'abitrate':abitrate}

if __name__ == '__main__':
	filename = sys.argv[1]
	print mediainfo(filename)