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[facebook] Add support for Relay based pages(closes #26823)

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This commit is contained in:
Remita Amine 2020-12-10 14:52:35 +01:00
parent 37fd242342
commit 6c370bc149
1 changed files with 66 additions and 5 deletions
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71
youtube_dl/extractor/facebook.py
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@ -16,11 +16,13 @@ from ..utils import (
clean_html,
error_to_compat_str,
ExtractorError,
float_or_none,
get_element_by_id,
int_or_none,
js_to_json,
limit_length,
parse_count,
qualities,
sanitized_Request,
try_get,
urlencode_postdata,
@ -327,6 +329,14 @@ class FacebookIE(InfoExtractor):
return extract_video_data(try_get(
js_data, lambda x: x['jsmods']['instances'], list) or [])
formats = []
def extract_dash_manifest(video):
dash_manifest = video.get('dash_manifest')
if dash_manifest:
formats.extend(self._parse_mpd_formats(
compat_etree_fromstring(compat_urllib_parse_unquote_plus(dash_manifest))))
if not video_data:
server_js_data = self._parse_json(self._search_regex([
r'bigPipe\.onPageletArrive\(({.+?})\)\s*;\s*}\s*\)\s*,\s*["\']onPageletArrive\s+(?:pagelet_group_mall|permalink_video_pagelet|hyperfeed_story_id_\d+)',
@ -334,6 +344,61 @@ class FacebookIE(InfoExtractor):
], webpage, 'js data', default='{}'), video_id, js_to_json, False)
video_data = extract_from_jsmods_instances(server_js_data)
if not video_data:
graphql_data = self._parse_json(self._search_regex(
r'handleWithCustomApplyEach\([^,]+,\s*({.*?"(?:dash_manifest|playable_url(?:_quality_hd)?)"\s*:\s*"[^"]+".*?})\);',
webpage, 'graphql data', default='{}'), video_id, fatal=False) or {}
for require in (graphql_data.get('require') or []):
if require[0] == 'RelayPrefetchedStreamCache':
def parse_graphql_video(video):
q = qualities(['sd', 'hd'])
for (suffix, format_id) in [('', 'sd'), ('_quality_hd', 'hd')]:
playable_url = video.get('playable_url' + suffix)
if not playable_url:
continue
formats.append({
'format_id': format_id,
'quality': q(format_id),
'url': playable_url,
})
extract_dash_manifest(video)
self._sort_formats(formats)
v_id = video.get('videoId') or video.get('id') or video_id
info = {
'id': v_id,
'formats': formats,
'thumbnail': try_get(video, lambda x: x['thumbnailImage']['uri']),
'uploader_id': try_get(video, lambda x: x['owner']['id']),
'timestamp': int_or_none(video.get('publish_time')),
'duration': float_or_none(video.get('playable_duration_in_ms'), 1000),
}
description = try_get(video, lambda x: x['savable_description']['text'])
title = video.get('name')
if title:
info.update({
'title': title,
'description': description,
})
else:
info['title'] = description or 'Facebook video #%s' % v_id
return webpage, info
data = try_get(require, lambda x: x[3][1]['__bbox']['result']['data'], dict) or {}
attachments = try_get(data, [
lambda x: x['video']['story']['attachments'],
lambda x: x['video']['creation_story']['attachments'],
lambda x: x['node']['comet_sections']['content']['story']['attachments']
], list) or []
for attachment in attachments:
media = attachment.get('media') or try_get(attachment, lambda x: x['style_type_renderer']['attachment']['media'], dict) or {}
if media.get('__typename') == 'Video':
return parse_graphql_video(media)
video = data.get('video') or {}
if video:
return parse_graphql_video(video)
if not video_data:
if not fatal_if_no_video:
return webpage, False
@ -375,7 +440,6 @@ class FacebookIE(InfoExtractor):
raise ExtractorError('Cannot parse data')
subtitles = {}
formats = []
for f in video_data:
format_id = f['stream_type']
if f and isinstance(f, dict):
@ -394,10 +458,7 @@ class FacebookIE(InfoExtractor):
'url': src,
'preference': preference,
})
dash_manifest = f[0].get('dash_manifest')
if dash_manifest:
formats.extend(self._parse_mpd_formats(
compat_etree_fromstring(compat_urllib_parse_unquote_plus(dash_manifest))))
extract_dash_manifest(f[0])
subtitles_src = f[0].get('subtitles_src')
if subtitles_src:
subtitles.setdefault('en', []).append({'url': subtitles_src})