mirror of
https://gitlab.com/dstftw/youtube-dl.git
synced 2020-11-16 09:42:26 +00:00
[common] add a generic support for mpd manifests
This commit is contained in:
remitamine
parent
0436157b95
commit
1bac34556f
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@ -10,6 +10,7 @@ import re
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import socket
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import sys
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import time
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import math
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from ..compat import (
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compat_cookiejar,
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@ -44,6 +45,7 @@ from ..utils import (
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xpath_text,
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xpath_with_ns,
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determine_protocol,
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parse_duration,
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)
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@ -1330,81 +1332,145 @@ class InfoExtractor(object):
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})
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return entries
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def _download_dash_manifest(self, dash_manifest_url, video_id, fatal=True):
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return self._download_xml(
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dash_manifest_url, video_id,
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note='Downloading DASH manifest',
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errnote='Could not download DASH manifest',
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def _extract_mpd_formats(self, mpd_url, video_id, mpd_id=None, note=None, errnote=None, fatal=True, formats_dict={}):
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res = self._download_webpage_handle(
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mpd_url, video_id,
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note=note or 'Downloading MPD manifest',
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errnote=errnote or 'Failed to download MPD manifest',
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fatal=fatal)
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if res is False:
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return []
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mpd, urlh = res
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mpd_base_url = re.match(r'https?://.+/', urlh.geturl()).group()
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def _extract_dash_manifest_formats(self, dash_manifest_url, video_id, fatal=True, namespace=None, formats_dict={}):
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dash_doc = self._download_dash_manifest(dash_manifest_url, video_id, fatal)
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if dash_doc is False:
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return self._parse_mpd(
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compat_etree_fromstring(mpd.encode('utf-8')), mpd_id, mpd_base_url, formats_dict=formats_dict)
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def _parse_mpd(self, mpd_doc, mpd_id=None, mpd_base_url='', formats_dict={}):
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if mpd_doc.get('type') == 'dynamic':
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return []
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return self._parse_dash_manifest(
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dash_doc, namespace=namespace, formats_dict=formats_dict)
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def _parse_dash_manifest(self, dash_doc, namespace=None, formats_dict={}):
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def _add_ns(path):
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return self._xpath_ns(path, namespace)
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formats = []
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for a in dash_doc.findall('.//' + _add_ns('AdaptationSet')):
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mime_type = a.attrib.get('mimeType')
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for r in a.findall(_add_ns('Representation')):
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mime_type = r.attrib.get('mimeType') or mime_type
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url_el = r.find(_add_ns('BaseURL'))
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if mime_type == 'text/vtt':
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# TODO implement WebVTT downloading
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pass
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elif mime_type.startswith('audio/') or mime_type.startswith('video/'):
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segment_list = r.find(_add_ns('SegmentList'))
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format_id = r.attrib['id']
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video_url = url_el.text if url_el is not None else None
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filesize = int_or_none(url_el.attrib.get('{http://youtube.com/yt/2012/10/10}contentLength') if url_el is not None else None)
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f = {
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'format_id': format_id,
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'url': video_url,
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'width': int_or_none(r.attrib.get('width')),
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'height': int_or_none(r.attrib.get('height')),
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'tbr': int_or_none(r.attrib.get('bandwidth'), 1000),
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'asr': int_or_none(r.attrib.get('audioSamplingRate')),
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'filesize': filesize,
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'fps': int_or_none(r.attrib.get('frameRate')),
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}
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if segment_list is not None:
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initialization_url = segment_list.find(_add_ns('Initialization')).attrib['sourceURL']
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f.update({
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'initialization_url': initialization_url,
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'segment_urls': [segment.attrib.get('media') for segment in segment_list.findall(_add_ns('SegmentURL'))],
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'protocol': 'http_dash_segments',
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})
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if not f.get('url'):
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f['url'] = initialization_url
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try:
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existing_format = next(
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fo for fo in formats
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if fo['format_id'] == format_id)
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except StopIteration:
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full_info = formats_dict.get(format_id, {}).copy()
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full_info.update(f)
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codecs = r.attrib.get('codecs')
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if codecs:
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if mime_type.startswith('video/'):
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vcodec, acodec = codecs, 'none'
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else: # mime_type.startswith('audio/')
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vcodec, acodec = 'none', codecs
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full_info.update({
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'vcodec': vcodec,
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'acodec': acodec,
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})
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formats.append(full_info)
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def extract_multisegment_info(element, ms_parent_info):
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ms_info = ms_parent_info.copy()
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segment_list = element.find(self._xpath_ns('SegmentList', namespace))
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if segment_list is not None:
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segment_urls_e = segment_list.findall(self._xpath_ns('SegmentURL', namespace))
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if segment_urls_e:
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ms_info['segment_urls'] = [segment.attrib['media'] for segment in segment_urls_e]
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initialization = segment_list.find(self._xpath_ns('Initialization', namespace))
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if initialization is not None:
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ms_info['initialization_url'] = initialization.attrib['sourceURL']
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else:
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segment_template = element.find(self._xpath_ns('SegmentTemplate', namespace))
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if segment_template is not None:
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start_number = segment_template.get('startNumber')
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if start_number:
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ms_info['start_number'] = int(start_number)
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segment_timeline = segment_template.find(self._xpath_ns('SegmentTimeline', namespace))
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if segment_timeline is not None:
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s_e = segment_timeline.findall(self._xpath_ns('S', namespace))
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if s_e:
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ms_info['total_number'] = 0
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for s in s_e:
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ms_info['total_number'] += 1 + int(s.get('r', '0'))
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else:
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existing_format.update(f)
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else:
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self.report_warning('Unknown MIME type %s in DASH manifest' % mime_type)
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timescale = segment_template.get('timescale')
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if timescale:
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ms_info['timescale'] = int(timescale)
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segment_duration = segment_template.get('duration')
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if segment_duration:
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ms_info['segment_duration'] = int(segment_duration)
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media_template = segment_template.get('media')
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if media_template:
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ms_info['media_template'] = media_template
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initialization = segment_template.get('initialization')
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if initialization:
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ms_info['initialization_url'] = initialization
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else:
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initialization = segment_template.find(self._xpath_ns('Initialization', namespace))
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if initialization is not None:
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ms_info['initialization_url'] = initialization.attrib['sourceURL']
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return ms_info
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namespace = self._search_regex(r'(?i)^{([^}]+)?}MPD$', mpd_doc.tag, 'namespace')
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mpd_duration = parse_duration(mpd_doc.get('mediaPresentationDuration'))
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formats = []
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for period in mpd_doc.findall(self._xpath_ns('Period', namespace)):
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period_duration = parse_duration(period.get('duration')) or mpd_duration
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period_ms_info = extract_multisegment_info(period, {
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'start_number': 1,
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'timescale': 1,
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})
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for adaptation_set in period.findall(self._xpath_ns('AdaptationSet', namespace)):
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adaption_set_ms_info = extract_multisegment_info(adaptation_set, period_ms_info)
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for representation in adaptation_set.findall(self._xpath_ns('Representation', namespace)):
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representation_attrib = adaptation_set.attrib.copy()
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representation_attrib.update(representation.attrib)
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mime_type = representation_attrib.get('mimeType')
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content_type = mime_type.split('/')[0] if mime_type else representation_attrib.get('contentType')
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if content_type == 'text':
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# TODO implement WebVTT downloading
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pass
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elif content_type == 'video' or content_type == 'audio':
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base_url = ''
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for element in (representation, adaptation_set, period, mpd_doc):
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base_url_e = element.find(self._xpath_ns('BaseURL', namespace))
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if base_url_e is not None:
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base_url = base_url_e.text + base_url
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if re.match(r'^https?://', base_url):
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break
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if not re.match(r'^https?://', base_url):
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base_url = mpd_base_url + base_url
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representation_id = representation_attrib.get('id')
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f = {
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'format_id': mpd_id or representation_id,
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'url': base_url,
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'width': int_or_none(representation_attrib.get('width')),
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'height': int_or_none(representation_attrib.get('height')),
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'tbr': int_or_none(representation_attrib.get('bandwidth'), 1000),
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'asr': int_or_none(representation_attrib.get('audioSamplingRate')),
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'fps': int_or_none(representation_attrib.get('frameRate')),
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'vcodec': 'none' if content_type == 'audio' else representation_attrib.get('codecs'),
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'acodec': 'none' if content_type == 'video' else representation_attrib.get('codecs'),
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'language': representation_attrib.get('lang'),
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'format_note': 'DASH %s' % content_type,
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}
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representation_ms_info = extract_multisegment_info(representation, adaption_set_ms_info)
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if 'segment_urls' not in representation_ms_info and 'media_template' in representation_ms_info:
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if 'total_number' not in representation_ms_info and 'segment_duration':
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segment_duration = representation_ms_info['segment_duration'] / representation_ms_info['timescale']
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representation_ms_info['total_number'] = int(math.ceil(period_duration / segment_duration))
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media_template = representation_ms_info['media_template']
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media_template = media_template.replace('$RepresentationID$', representation_id)
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media_template = re.sub(r'\$(Bandwidth)(?:%(0\d+d))?\$', r'%(\1)\2', media_template)
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media_template = media_template % {'Bandwidth': representation_attrib.get('bandwidth')}
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media_template = re.sub(r'\$(Number)(?:%(0\d+d))?\$', r'%(\1)\2', media_template)
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media_template.replace('$$', '$')
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representation_ms_info['segment_urls'] = [media_template % {'Number': segment_number} for segment_number in range(representation_ms_info['start_number'], representation_ms_info['total_number'] + representation_ms_info['start_number'])]
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if 'segment_urls' in representation_ms_info:
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f.update({
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'segment_urls': representation_ms_info['segment_urls'],
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'protocol': 'http_dash_segments',
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})
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if 'initialization_url' in representation_ms_info:
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initialization_url = representation_ms_info['initialization_url'].replace('$RepresentationID$', representation_id)
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f.update({
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'initialization_url': initialization_url,
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})
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if not f.get('url'):
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f['url'] = initialization_url
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try:
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existing_format = next(
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fo for fo in formats
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if fo['format_id'] == representation_id)
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except StopIteration:
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full_info = formats_dict.get(representation_id, {}).copy()
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full_info.update(f)
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formats.append(full_info)
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else:
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existing_format.update(f)
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else:
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self.report_warning('Unknown MIME type %s in DASH manifest' % mime_type)
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return formats
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def _live_title(self, name):
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