105 lines
3.9 KiB
Python
105 lines
3.9 KiB
Python
# coding: utf-8
|
|
|
|
# Contributed by Olivier Berger <olivier.berger@telecom-sudparis.eu>
|
|
|
|
# Extract material from recordings made inside BigBlueButton
|
|
|
|
# BigBlueButton records multiple videos :
|
|
# - speaker speech & webcam
|
|
# - screesharing
|
|
# for slides, annotations, etc. the playback app typically renders them on the fly upon playback
|
|
# so it may not be easy to capture that with youtube-dl
|
|
|
|
# Extract a merged video, without the slides with
|
|
# youtube-dl --merge-output-format mkv -f slides+speaker "https://mybbb.example.com/playback/presentation/2.0/playback.html?meetingId=12345679a50a715e8d6dc692df996dceb8d788f8-1234566973639"
|
|
|
|
from __future__ import unicode_literals
|
|
|
|
from .common import InfoExtractor
|
|
|
|
from ..utils import (
|
|
unified_timestamp,
|
|
xpath_text,
|
|
xpath_with_ns,
|
|
)
|
|
|
|
_s = lambda p: xpath_with_ns(p, {'svg': 'http://www.w3.org/2000/svg'})
|
|
_x = lambda p: xpath_with_ns(p, {'xlink': 'http://www.w3.org/1999/xlink'})
|
|
|
|
class BigBlueButtonIE(InfoExtractor):
|
|
_VALID_URL = r'(?P<website>https?://[^/]+)/playback/presentation/2.0/playback.html\?meetingId=(?P<id>[0-9a-f\-]+)'
|
|
_TEST = {
|
|
'url': 'https://mybbb.example.com/playback/presentation/2.0/playback.html?meetingId=12345679a50a715e8d6dc692df996dceb8d788f8-1234566973639',
|
|
'md5': 'TODO: md5 sum of the first 10241 bytes of the video file (use --test)',
|
|
'info_dict': {
|
|
'id': '42',
|
|
'ext': 'mp4',
|
|
'title': 'Video title goes here',
|
|
'thumbnail': r're:^https?://.*\.jpg$',
|
|
# TODO more properties, either as:
|
|
# * A value
|
|
# * MD5 checksum; start the string with md5:
|
|
# * A regular expression; start the string with re:
|
|
# * Any Python type (for example int or float)
|
|
}
|
|
}
|
|
|
|
def _real_extract(self, url):
|
|
video_id = self._match_id(url)
|
|
m = self._VALID_URL_RE.match(url)
|
|
website = m.group('website')
|
|
|
|
webpage = self._download_webpage(url, video_id)
|
|
|
|
# Extract basic metadata (more available in metadata.xml)
|
|
metadata_url = website + '/presentation/' + video_id + '/metadata.xml'
|
|
metadata = self._download_xml(metadata_url, video_id)
|
|
|
|
id = xpath_text(metadata, 'id')
|
|
meta = metadata.find('./meta')
|
|
meeting_name = xpath_text(meta, 'meetingName')
|
|
start_time = xpath_text(metadata, 'start_time')
|
|
|
|
title = meeting_name
|
|
|
|
# This code unused : have to grasp what to do with thumbnails
|
|
thumbnails = []
|
|
images = metadata.find('./playback/extensions/preview/images')
|
|
for image in images:
|
|
thumbnails += {
|
|
'url': image.text.strip(),
|
|
'width': image.get('width'),
|
|
'height': image.get('height')
|
|
}
|
|
|
|
# This code mostly useless unless one know how to process slides
|
|
shapes_url = website + '/presentation/' + video_id + '/shapes.svg'
|
|
shapes = self._download_xml(shapes_url, video_id)
|
|
images = shapes.findall(_s("./svg:image[@class='slide']"))
|
|
slides = []
|
|
for image in images:
|
|
slides.append(image.get(_x('xlink:href')))
|
|
|
|
# We produce 2 formats :
|
|
# - the 'webcams.webm' one, for speaker (can be used for merging its audio)
|
|
# - the 'deskshare.webm' one, for screen sharing (can be used
|
|
# for merging its video) - it lacks the slides unfortunately
|
|
formats = []
|
|
|
|
sources = { 'speaker': '/video/webcams.webm', 'slides': '/deskshare/deskshare.webm' }
|
|
for format_id, source in sources.items():
|
|
video_url = website + '/presentation/' + video_id + source
|
|
formats.append({
|
|
'url': video_url,
|
|
'format_id': format_id
|
|
})
|
|
self._sort_formats(formats)
|
|
|
|
return {
|
|
'id': video_id,
|
|
'title': title,
|
|
'formats': formats,
|
|
'timestamp': int(start_time),
|
|
# 'thumbnails': thumbnails
|
|
}
|