diff options
Diffstat (limited to 'youtube_dl/extractor')
| -rw-r--r-- | youtube_dl/extractor/common.py | 200 |
1 files changed, 133 insertions, 67 deletions
diff --git a/youtube_dl/extractor/common.py b/youtube_dl/extractor/common.py index 199a04d1c..1758ab29b 100644 --- a/youtube_dl/extractor/common.py +++ b/youtube_dl/extractor/common.py @@ -10,6 +10,7 @@ import re import socket import sys import time +import math from ..compat import ( compat_cookiejar, @@ -44,6 +45,7 @@ from ..utils import ( xpath_text, xpath_with_ns, determine_protocol, + parse_duration, ) @@ -1330,81 +1332,145 @@ class InfoExtractor(object): }) return entries - def _download_dash_manifest(self, dash_manifest_url, video_id, fatal=True): - return self._download_xml( - dash_manifest_url, video_id, - note='Downloading DASH manifest', - errnote='Could not download DASH manifest', + def _extract_mpd_formats(self, mpd_url, video_id, mpd_id=None, note=None, errnote=None, fatal=True, formats_dict={}): + res = self._download_webpage_handle( + mpd_url, video_id, + note=note or 'Downloading MPD manifest', + errnote=errnote or 'Failed to download MPD manifest', fatal=fatal) - - def _extract_dash_manifest_formats(self, dash_manifest_url, video_id, fatal=True, namespace=None, formats_dict={}): - dash_doc = self._download_dash_manifest(dash_manifest_url, video_id, fatal) - if dash_doc is False: + if res is False: return [] + mpd, urlh = res + mpd_base_url = re.match(r'https?://.+/', urlh.geturl()).group() + + return self._parse_mpd( + compat_etree_fromstring(mpd.encode('utf-8')), mpd_id, mpd_base_url, formats_dict=formats_dict) - return self._parse_dash_manifest( - dash_doc, namespace=namespace, formats_dict=formats_dict) + def _parse_mpd(self, mpd_doc, mpd_id=None, mpd_base_url='', formats_dict={}): + if mpd_doc.get('type') == 'dynamic': + return [] - def _parse_dash_manifest(self, dash_doc, namespace=None, formats_dict={}): - def _add_ns(path): - return self._xpath_ns(path, namespace) + def extract_multisegment_info(element, ms_parent_info): + ms_info = ms_parent_info.copy() + segment_list = element.find(self._xpath_ns('SegmentList', namespace)) + if segment_list is not None: + segment_urls_e = segment_list.findall(self._xpath_ns('SegmentURL', namespace)) + if segment_urls_e: + ms_info['segment_urls'] = [segment.attrib['media'] for segment in segment_urls_e] + initialization = segment_list.find(self._xpath_ns('Initialization', namespace)) + if initialization is not None: + ms_info['initialization_url'] = initialization.attrib['sourceURL'] + else: + segment_template = element.find(self._xpath_ns('SegmentTemplate', namespace)) + if segment_template is not None: + start_number = segment_template.get('startNumber') + if start_number: + ms_info['start_number'] = int(start_number) + segment_timeline = segment_template.find(self._xpath_ns('SegmentTimeline', namespace)) + if segment_timeline is not None: + s_e = segment_timeline.findall(self._xpath_ns('S', namespace)) + if s_e: + ms_info['total_number'] = 0 + for s in s_e: + ms_info['total_number'] += 1 + int(s.get('r', '0')) + else: + timescale = segment_template.get('timescale') + if timescale: + ms_info['timescale'] = int(timescale) + segment_duration = segment_template.get('duration') + if segment_duration: + ms_info['segment_duration'] = int(segment_duration) + media_template = segment_template.get('media') + if media_template: + ms_info['media_template'] = media_template + initialization = segment_template.get('initialization') + if initialization: + ms_info['initialization_url'] = initialization + else: + initialization = segment_template.find(self._xpath_ns('Initialization', namespace)) + if initialization is not None: + ms_info['initialization_url'] = initialization.attrib['sourceURL'] + return ms_info + namespace = self._search_regex(r'(?i)^{([^}]+)?}MPD$', mpd_doc.tag, 'namespace') + mpd_duration = parse_duration(mpd_doc.get('mediaPresentationDuration')) formats = [] - for a in dash_doc.findall('.//' + _add_ns('AdaptationSet')): - mime_type = a.attrib.get('mimeType') - for r in a.findall(_add_ns('Representation')): - mime_type = r.attrib.get('mimeType') or mime_type - url_el = r.find(_add_ns('BaseURL')) - if mime_type == 'text/vtt': - # TODO implement WebVTT downloading - pass - elif mime_type.startswith('audio/') or mime_type.startswith('video/'): - segment_list = r.find(_add_ns('SegmentList')) - format_id = r.attrib['id'] - video_url = url_el.text if url_el is not None else None - filesize = int_or_none(url_el.attrib.get('{http://youtube.com/yt/2012/10/10}contentLength') if url_el is not None else None) - f = { - 'format_id': format_id, - 'url': video_url, - 'width': int_or_none(r.attrib.get('width')), - 'height': int_or_none(r.attrib.get('height')), - 'tbr': int_or_none(r.attrib.get('bandwidth'), 1000), - 'asr': int_or_none(r.attrib.get('audioSamplingRate')), - 'filesize': filesize, - 'fps': int_or_none(r.attrib.get('frameRate')), - } - if segment_list is not None: - initialization_url = segment_list.find(_add_ns('Initialization')).attrib['sourceURL'] - f.update({ - 'initialization_url': initialization_url, - 'segment_urls': [segment.attrib.get('media') for segment in segment_list.findall(_add_ns('SegmentURL'))], - 'protocol': 'http_dash_segments', - }) - if not f.get('url'): - f['url'] = initialization_url - try: - existing_format = next( - fo for fo in formats - if fo['format_id'] == format_id) - except StopIteration: - full_info = formats_dict.get(format_id, {}).copy() - full_info.update(f) - codecs = r.attrib.get('codecs') - if codecs: - if mime_type.startswith('video/'): - vcodec, acodec = codecs, 'none' - else: # mime_type.startswith('audio/') - vcodec, acodec = 'none', codecs - - full_info.update({ - 'vcodec': vcodec, - 'acodec': acodec, + for period in mpd_doc.findall(self._xpath_ns('Period', namespace)): + period_duration = parse_duration(period.get('duration')) or mpd_duration + period_ms_info = extract_multisegment_info(period, { + 'start_number': 1, + 'timescale': 1, + }) + for adaptation_set in period.findall(self._xpath_ns('AdaptationSet', namespace)): + adaption_set_ms_info = extract_multisegment_info(adaptation_set, period_ms_info) + for representation in adaptation_set.findall(self._xpath_ns('Representation', namespace)): + representation_attrib = adaptation_set.attrib.copy() + representation_attrib.update(representation.attrib) + mime_type = representation_attrib.get('mimeType') + content_type = mime_type.split('/')[0] if mime_type else representation_attrib.get('contentType') + if content_type == 'text': + # TODO implement WebVTT downloading + pass + elif content_type == 'video' or content_type == 'audio': + base_url = '' + for element in (representation, adaptation_set, period, mpd_doc): + base_url_e = element.find(self._xpath_ns('BaseURL', namespace)) + if base_url_e is not None: + base_url = base_url_e.text + base_url + if re.match(r'^https?://', base_url): + break + if not re.match(r'^https?://', base_url): + base_url = mpd_base_url + base_url + representation_id = representation_attrib.get('id') + f = { + 'format_id': mpd_id or representation_id, + 'url': base_url, + 'width': int_or_none(representation_attrib.get('width')), + 'height': int_or_none(representation_attrib.get('height')), + 'tbr': int_or_none(representation_attrib.get('bandwidth'), 1000), + 'asr': int_or_none(representation_attrib.get('audioSamplingRate')), + 'fps': int_or_none(representation_attrib.get('frameRate')), + 'vcodec': 'none' if content_type == 'audio' else representation_attrib.get('codecs'), + 'acodec': 'none' if content_type == 'video' else representation_attrib.get('codecs'), + 'language': representation_attrib.get('lang'), + 'format_note': 'DASH %s' % content_type, + } + representation_ms_info = extract_multisegment_info(representation, adaption_set_ms_info) + if 'segment_urls' not in representation_ms_info and 'media_template' in representation_ms_info: + if 'total_number' not in representation_ms_info and 'segment_duration': + segment_duration = representation_ms_info['segment_duration'] / representation_ms_info['timescale'] + representation_ms_info['total_number'] = int(math.ceil(period_duration / segment_duration)) + media_template = representation_ms_info['media_template'] + media_template = media_template.replace('$RepresentationID$', representation_id) + media_template = re.sub(r'\$(Bandwidth)(?:%(0\d+d))?\$', r'%(\1)\2', media_template) + media_template = media_template % {'Bandwidth': representation_attrib.get('bandwidth')} + media_template = re.sub(r'\$(Number)(?:%(0\d+d))?\$', r'%(\1)\2', media_template) + media_template.replace('$$', '$') + representation_ms_info['segment_urls'] = [media_template % {'Number': segment_number} for segment_number in range(representation_ms_info['start_number'], representation_ms_info['total_number'] + representation_ms_info['start_number'])] + if 'segment_urls' in representation_ms_info: + f.update({ + 'segment_urls': representation_ms_info['segment_urls'], + 'protocol': 'http_dash_segments', }) - formats.append(full_info) + if 'initialization_url' in representation_ms_info: + initialization_url = representation_ms_info['initialization_url'].replace('$RepresentationID$', representation_id) + f.update({ + 'initialization_url': initialization_url, + }) + if not f.get('url'): + f['url'] = initialization_url + try: + existing_format = next( + fo for fo in formats + if fo['format_id'] == representation_id) + except StopIteration: + full_info = formats_dict.get(representation_id, {}).copy() + full_info.update(f) + formats.append(full_info) + else: + existing_format.update(f) else: - existing_format.update(f) - else: - self.report_warning('Unknown MIME type %s in DASH manifest' % mime_type) + self.report_warning('Unknown MIME type %s in DASH manifest' % mime_type) return formats def _live_title(self, name): |