'NoneType' object has no attribute 'group'

The error is in your line 11, your re.search is returning no results, ie None, and then you're trying to call fmtre.group but fmtre is None, hence the AttributeError.

You could try:

def getVideoUrl(content):
    fmtre = re.search('(?<=fmt_url_map=).*', content)
    if fmtre is None:
        return None
    grps = fmtre.group(0).split('&amp;')
    vurls = urllib2.unquote(grps[0])
    videoUrl = None
    for vurl in vurls.split('|'):
        if vurl.find('itag=5') > 0:
            return vurl
    return None

You use regex to match the url, but it can't match, so the result is None

and None type doesn't have the group attribute

You should add some code to detect the result

If it can't match the rule, it should not go on under code

def getVideoUrl(content):
    fmtre = re.search('(?<=fmt_url_map=).*', content)
    if fmtre is None:
        return None         # if fmtre is None, it prove there is no match url, and return None to tell the calling function 
    grps = fmtre.group(0).split('&amp;')
    vurls = urllib2.unquote(grps[0])
    videoUrl = None
    for vurl in vurls.split('|'):
        if vurl.find('itag=5') > 0:
            return vurl
    return None