fetch youtube video urls

README.md

Max Resource

https://i.ytimg.com/vi/{vid}/maxresdefault.jpg

High Quality

https://i.ytimg.com/vi/{vid}/hqdefault.jpg

Medium Quality

https://i.ytimg.com/vi/{vid/mqdefault.jpg

get_youtube_video_urls.py

#!/usr/bin/python
#coding: utf-8

import requests
import sys, re, urllib
reload(sys)
sys.setdefaultencoding('utf-8')


proxies = {'all': '127.0.0.1:8088'}

headers = {'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/51.0.2704.106 Safari/537.36', 
'Accept-Language':'en-US,en;q=0.8,zh-CN;q=0.6,zh;q=0.4,zh-TW;q=0.2',
'Accept-Encoding':'gzip, deflate, sdch',
'Cache-Control': 'no-cache',
'Referer': 'https://www.youtube.com',
}

vmaps = {
    "13": ("3GP" , "Low Quality - 176x144"),
    "17": ("3GP" , "Medium Quality - 176x144"),
    "36": ("3GP" , "High Quality - 320x240"),
    "5" : ("FLV" , "Low Quality - 400x226"),
    "6" : ("FLV" , "Medium Quality - 640x360"),
    "34": ("FLV" , "Medium Quality - 640x360"),
    "35": ("FLV" , "High Quality - 854x480"),
    "43": ("WEBM", "Low Quality - 640x360"),
    "44": ("WEBM", "Medium Quality - 854x480"),
    "45": ("WEBM", "High Quality - 1280x720"),
    "18": ("MP4" , "Medium Quality - 480x360"),
    "22": ("MP4" , "High Quality - 1280x720"),
    "37": ("MP4" , "High Quality - 1920x1080"),
    "38": ("MP4" , "High Quality - 4096x230")
}

def get_youtube_video_urls(vid):

    vurls = {'MP4': [], 'FLV': [], '3GP': [], 'WEBM': []}

    watch_url = 'https://www.youtube.com/watch?v=' + vid
    r = requests.get(watch_url, headers=headers, proxies=proxies, verify=False)
    html = r.content
    r.close()

    s = re.findall('"url_encoded_fmt_stream_map":"([^"]+)"', html)
    js = s[0].split(',')
    for s in js:
        ars = s.split('\\u0026')
        sig, vurl, itag = '', '', 0
        for a in ars:
            if a.startswith('sig'):
                sig = a[4:]
            if a.startswith('url'):
                vurl = urllib.unquote(a[4:])
            if a.startswith('itag'):
                itag = a[5:]
        vt = vmaps.get(itag)
        if vt:
            vurls[vt[0]] = (vt[1], vurl)
            # print vt[0], vt[1], vurl
        else:
            print 'no vmap', itag, vurl
        
    print vurls

if __name__ == '__main__':
    get_youtube_video_urls('HLx1R39kc38')