diff options
| -rw-r--r-- | youtube_dl/extractor/bandcamp.py | 86 |
1 files changed, 62 insertions, 24 deletions
diff --git a/youtube_dl/extractor/bandcamp.py b/youtube_dl/extractor/bandcamp.py index 249c3d956..88c590e98 100644 --- a/youtube_dl/extractor/bandcamp.py +++ b/youtube_dl/extractor/bandcamp.py @@ -1,7 +1,9 @@ from __future__ import unicode_literals import json +import random import re +import time from .common import InfoExtractor from ..compat import ( @@ -12,6 +14,9 @@ from ..utils import ( ExtractorError, float_or_none, int_or_none, + parse_filesize, + unescapeHTML, + update_url_query, ) @@ -81,35 +86,68 @@ class BandcampIE(InfoExtractor): r'(?ms)var TralbumData = .*?[{,]\s*id: (?P<id>\d+),?$', webpage, 'video id') - download_webpage = self._download_webpage(download_link, video_id, 'Downloading free downloads page') - # We get the dictionary of the track from some javascript code - all_info = self._parse_json(self._search_regex( - r'(?sm)items: (.*?),$', download_webpage, 'items'), video_id) - info = all_info[0] - # We pick mp3-320 for now, until format selection can be easily implemented. - mp3_info = info['downloads']['mp3-320'] - # If we try to use this url it says the link has expired - initial_url = mp3_info['url'] - m_url = re.match( - r'(?P<server>http://(.*?)\.bandcamp\.com)/download/track\?enc=mp3-320&fsig=(?P<fsig>.*?)&id=(?P<id>.*?)&ts=(?P<ts>.*)$', - initial_url) - # We build the url we will use to get the final track url - # This url is build in Bandcamp in the script download_bunde_*.js - request_url = '%s/statdownload/track?enc=mp3-320&fsig=%s&id=%s&ts=%s&.rand=665028774616&.vrs=1' % (m_url.group('server'), m_url.group('fsig'), video_id, m_url.group('ts')) - final_url_webpage = self._download_webpage(request_url, video_id, 'Requesting download url') - # If we could correctly generate the .rand field the url would be - # in the "download_url" key - final_url = self._proto_relative_url(self._search_regex( - r'"retry_url":"(.+?)"', final_url_webpage, 'final video URL'), 'http:') + download_webpage = self._download_webpage( + download_link, video_id, 'Downloading free downloads page') + + blob = self._parse_json( + self._search_regex( + r'data-blob=(["\'])(?P<blob>{.+?})\1', download_webpage, + 'blob', group='blob'), + video_id, transform_source=unescapeHTML) + + info = blob['digital_items'][0] + + downloads = info['downloads'] + track = info['title'] + + artist = info.get('artist') + title = '%s - %s' % (artist, track) if artist else track + + download_formats = {} + for f in blob['download_formats']: + name, ext = f.get('name'), f.get('file_extension') + if all(isinstance(x, compat_str) for x in (name, ext)): + download_formats[name] = ext.strip('.') + + formats = [] + for format_id, f in downloads.items(): + format_url = f.get('url') + if not format_url: + continue + # Stat URL generation algorithm is reverse engineered from + # download_*_bundle_*.js + stat_url = update_url_query( + format_url.replace('/download/', '/statdownload/'), { + '.rand': int(time.time() * 1000 * random.random()), + }) + format_id = f.get('encoding_name') or format_id + stat = self._download_json( + stat_url, video_id, 'Downloading %s JSON' % format_id, + transform_source=lambda s: s[s.index('{'):s.rindex('}') + 1], + fatal=False) + if not stat: + continue + retry_url = stat.get('retry_url') + if not isinstance(retry_url, compat_str): + continue + formats.append({ + 'url': self._proto_relative_url(retry_url, 'http:'), + 'ext': download_formats.get(format_id), + 'format_id': format_id, + 'format_note': f.get('description'), + 'filesize': parse_filesize(f.get('size_mb')), + 'vcodec': 'none', + }) + self._sort_formats(formats) return { 'id': video_id, - 'title': info['title'], - 'ext': 'mp3', - 'vcodec': 'none', - 'url': final_url, + 'title': title, 'thumbnail': info.get('thumb_url'), 'uploader': info.get('artist'), + 'artist': artist, + 'track': track, + 'formats': formats, } |