From: m0viefreak Date: Thu, 20 Feb 2014 17:19:03 +0000 (+0100) Subject: [youtube] decrypt signature when downloading dash manifest X-Git-Url: http://git.bitcoin.ninja/index.cgi?a=commitdiff_plain;h=d68f0cdb238edc552a285135bc2684b6709f4f56;p=youtube-dl [youtube] decrypt signature when downloading dash manifest --- diff --git a/youtube_dl/extractor/youtube.py b/youtube_dl/extractor/youtube.py index 02c5ede74..5b0d30ed1 100644 --- a/youtube_dl/extractor/youtube.py +++ b/youtube_dl/extractor/youtube.py @@ -1366,12 +1366,26 @@ class YoutubeIE(YoutubeBaseInfoExtractor, SubtitlesInfoExtractor): raise ExtractorError(u'no conn, hlsvp or url_encoded_fmt_stream_map information found in video info') # Look for the DASH manifest - dash_manifest_url_lst = video_info.get('dashmpd') - if (dash_manifest_url_lst and dash_manifest_url_lst[0] and - self._downloader.params.get('youtube_include_dash_manifest', False)): + if (self._downloader.params.get('youtube_include_dash_manifest', False)): try: + # The DASH manifest used needs to be the one from the original video_webpage. + # The one found in get_video_info seems to be using different signatures. + # However, in the case of an age restriction there won't be any embedded dashmpd in the video_webpage. + # Luckily, it seems, this case uses some kind of default signature (len == 86), so the + # combination of get_video_info and the _static_decrypt_signature() decryption fallback will work here. + if age_gate: + dash_manifest_url = video_info.get('dashmpd')[0]; + else: + x = re.search(r'ytplayer\.config = ({.*});', video_webpage) + x = json.loads(x.group(1)); + dash_manifest_url = x['args']['dashmpd'] + def decrypt_sig(mobj): + s = mobj.group(1) + dec_s = self._decrypt_signature(s, video_id, player_url, age_gate) + return '/signature/%s' % dec_s + dash_manifest_url = re.sub(r'/s/([\w\.]+)', decrypt_sig, dash_manifest_url) dash_doc = self._download_xml( - dash_manifest_url_lst[0], video_id, + dash_manifest_url, video_id, note=u'Downloading DASH manifest', errnote=u'Could not download DASH manifest') for r in dash_doc.findall(u'.//{urn:mpeg:DASH:schema:MPD:2011}Representation'):