youtube-dl extractor for Picasa

picasa.py

from .common import InfoExtractor

class PicasaIE(InfoExtractor):
	_VALID_URL = r'(?:https?://)?picasaweb\.google.com/lh/photo/(?P<id>.+?)$'

	def _real_extract(self, url):
		video_id = self._match_id(url)
		webpage = self._download_webpage(url, video_id)

		title = self._html_search_regex(
			r'"title":"(?P<title>.*?)"',
			webpage,
			'title',
			group='title'
		)
        
		content = self._parse_json(self._html_search_regex(
			r'"content":(?P<content>\[.*?\])',
			webpage,
			'content',
			group='content'
		), video_id)
        
		formats = []
		for format in content:
			medium, ext = format['type'].split('/')
			if medium == 'video':
				formats.append({
					'url': format['url'],
					'width': format['width'],
					'height': format['height'],
					'ext': ext
				})
		self._sort_formats(formats)

		return {
			'id': video_id,
			'title': title,
			'formats': formats
		}