YouTube Channel Downloader

channel-downloader.py

# YouTube Channel Downloader
# 
# Download all videos from all user/channel playlists
#
# TODO: check pagination. Tested with up to 10 playlists and up to 50 videos each.
import json
import re
import time
import traceback
from urllib.request import urlopen

# External dependencies
# - jsonpath_rw
# - pytube3
# - requests

from jsonpath_rw import parse
from pytube import Playlist
from pytube import YouTube
import requests

# -- Parameters --
media_type = 'video' # or 'audio'

# Channel playlists to download
channel_name = 'ArchivoHistóricoRTA'

def get_channel_playlists(yt_username):
  channel_playlists_url = 'https://www.youtube.com/c/{}/playlists'.format(yt_username)

  html = requests.get(channel_playlists_url).text

  # Get json metadata from HTML
  _js_regex = re.compile(r"window\[\"ytInitialData\"] = ([^\n]+)")
  raw_json = _js_regex.search(html).group(1)[0:-1]
  json_decoded = json.loads(raw_json)

  jsonpath = '$..gridRenderer.items..gridPlaylistRenderer'

  jsonpath_parsed = parse(jsonpath)
  
  playlists = [match.value for match in jsonpath_parsed.find(json_decoded)]
  
  items = []
  for playlist in playlists:
    items.append({
      'id': playlist['playlistId'],
      'title': playlist['title']['runs'][0]['text']
    })

  return items

# -- Code --
def download_audio(url, path='.'):
  print('Downloading audio from {}...'.format(url))
      
  try:
    YouTube(video_url) \
      .streams \
      .filter(only_audio=True, file_extension='mp4')[0] \
      .download()
  except Exception as e:
    traceback.print_exc()
    pass

def download_video(url, path='.'):
  print('Downloading video from {}...'.format(url))
  
  try:
    YouTube(url) \
      .streams \
      .filter(progressive=True, file_extension='mp4') \
      .order_by('resolution') \
      .desc() \
      .first() \
      .download(path)
  except Exception as e:
    traceback.print_exc()
    pass

playlists = get_channel_playlists(channel_name)

for playlist in playlists:
  yt_playlist = Playlist('https://www.youtube.com/playlist?list={}'.format(playlist['id']))
  dest_path = playlist['title']

  print('Downloading {} {}s from playlist...'.format(len(yt_playlist.video_urls), media_type))

  for video_url in yt_playlist.video_urls:
    if media_type == 'video':
      download_video(video_url, dest_path) # Download audio
    elif media_type == 'audio':
      download_audio(video_url, dest_path) # Download video (with audio)
    else:
      print('Media type not supported. Check "media_type" variable.')

    # Throttle to avoid YouTube restriction (Too many requests)
    time.sleep(3)

requirements.txt

jsonpath_rw
pytube3
requests