Downloads WWDC media. Works for 2011, 2013, and 2014. 2012 seems to break on authentication, even with the ADCDownloadAuth cookie provided. Requires BeautifulSoup4 and Requests as well as the value of your ADCDownloadAuth cookie in a JSON file in the same dir as "wwdc_cookies.json".

wwdc.py

#!/usr/bin/env python3

import argparse
import datetime
import os
import json

import requests
from bs4 import BeautifulSoup

def scrape_session_page(url, event_name=""):
    r = requests.get(url)
    html_doc = r.text

    soup = BeautifulSoup(html_doc)

    sessions = soup.find_all('li', class_='session')
    for session in sessions:
        try:
            session_id  = session.get('id').replace('-video','')
            title       = session.find('li', class_='title')
            track       = session.find('li', class_='track')
            platform    = session.find('li', class_='platform')
            downloads   = session.find('p', class_='download').find_all('a')
            
            title = title.string if title else ""
            track = track.string if track else ""
            platform = platform.string if platform else ""
    
            session_name = "%s - Session %s - %s (%s, %s)" % (event_name, session_id, title, track, platform)
            # print(session_name + ":")
        except Exception as e:
            print("ERROR: Could not parse session entry: %r" % e)
            continue
    
        for link in downloads:
            try:
                link_type = link.string.upper()
                
                if link_type == 'PDF' and not args.pdf: continue
                if link_type == 'HD' and not args.hd: continue
                if link_type == 'SD' and not args.sd: continue
                
                link_href = link.get('href')
                link_href = link_href.replace('https://developer.apple.com/devcenter/download.action?path=/', 'http://adcdownload.apple.com/')
                
                filename = "%s [%s]" % (session_name, link_type)
                if link_type == 'PDF':
                    filename += '.pdf'
                else:
                    filename += '.m4v'
                
                # print(" %s" % filename)
                # continue
                
                if link_href.startswith('http'):
                    r = requests.get(link_href, cookies=cookie_jar, stream=True)
                    size = int(r.headers['content-length'])
            
                    if os.path.exists(filename):
                        s = os.stat(filename)
                        if s.st_size >= size:
                            print("  %s: Done.\r" % (filename,))
                            continue
                    
                    with open(filename, 'wb') as fd:
                        chunk_size = 4*1024*1024
                        progress = 0
                        for chunk in r.iter_content(chunk_size):
                            progress += len(chunk)
                            print("  %s: %0.2f%%\r" % (filename, progress/float(size)*100.0), end="", flush=True)
                            fd.write(chunk)
                    print("") #Newline
            except Exception as e:
                print("")
                print("Error downloading %s: %r" % (filename, e))
                # print(r.headers, r.text)
                continue

today = datetime.datetime.now()
this_year = today.year

parser = argparse.ArgumentParser(description='Download WWDC videos and presentations.')
parser.add_argument('-y', '--year', action='append', type=str, help='The year to download. Can be specified multiple times. Defaults to the current year (%d).' % this_year)
parser.add_argument('--tt', action="store_true", help='Download the media from the current Tech Talks page.')
parser.add_argument('--hd', action="store_true", help='Download the HD version of the session videos.')
parser.add_argument('--sd', action="store_true", help='Download the SD version of the session videos.')
parser.add_argument('--pdf', action="store_true", help='Download the PDFs of the session presentations.')
args = parser.parse_args()

if (args.year == None or len(args.year) == 0) and not args.tt:
    args.year = [str(this_year)]

if not args.pdf and not args.sd and not args.hd:
    args.pdf = args.sd = args.hd = True

with open("wwdc_cookies.json", "r") as fp:
    cookie_jar = json.load(fp)

base_url = 'https://developer.apple.com/videos/wwdc/'
tt_url = 'https://developer.apple.com/tech-talks/videos/'

if args.tt:
    scrape_session_page(tt_url, event_name="iOS 7 Tech Talks")

years = args.year
if years:
    for year in years:
        wwdc_url = "/".join([base_url, year, ""])
        scrape_session_page(wwdc_url, event_name="WWDC %s" % year)