ecfc271554
Allows downloading some of the videos from [Harvard Open Learning Initiative][1]. These seem to be licensed under Creative Commons. [1]: https://www.extension.harvard.edu/open-learning-initiative
60 lines
2.0 KiB
Python
60 lines
2.0 KiB
Python
# coding: utf-8
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from __future__ import unicode_literals
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from .common import InfoExtractor
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from ..utils import (int_or_none, try_get)
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class HarvardDceIE(InfoExtractor):
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_VALID_URL = r'https?://matterhorn\.dce\.harvard\.edu/engage/player/watch.html\?id=(?P<id>[0-9a-z-]+)'
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_TEST = {
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'url': 'https://matterhorn.dce.harvard.edu/engage/player/watch.html?id=1a5e78df-fbb5-4c97-be82-860fb69b4379',
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'info_dict': {
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'id': '1a5e78df-fbb5-4c97-be82-860fb69b4379',
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'title': 'Lecture 4',
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'ext': 'mp4',
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'description': 'Review, Kernels, Normality',
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'duration': float(3187),
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}
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}
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def _real_extract(self, url):
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vid = self._match_id(url)
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json_url = 'https://matterhorn.dce.harvard.edu/search/episode.json'
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response = self._download_json(json_url, vid, query={'id': vid})
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result = response['search-results']['result']
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formats = result['mediapackage']['media']['track']
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def sort_format(track):
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return try_get(track, lambda x: x['video']['bitrate']) or 0
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formats.sort(key=sort_format)
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def map_format(track):
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audio = track.get('audio') or {}
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video = track.get('video') or {}
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return {
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'url': track['url'],
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'acodec': try_get(audio, lambda x: x['encoder']['type']),
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'abr': audio.get('bitrate'),
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'vcodec': try_get(video, lambda x: x['encoder']['type']),
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'vbr': video.get('bitrate'),
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'fps': video.get('framerate'),
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'resolution': video.get('resolution'),
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}
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formats = map(map_format, formats)
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duration = result['mediapackage'].get('duration')
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duration = int_or_none(duration, scale=1000)
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return {
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'id': vid,
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'title': result.get('dcTitle'),
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'formats': formats,
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'description': result.get('dcDescription'),
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'duration': duration,
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'license': result.get('dcLicense'),
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}
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