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youtube-dl/youtube_dl/extractor/pbs.py
2015-08-11 01:46:25 +06:00

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# coding: utf-8
from __future__ import unicode_literals
import re
from .common import InfoExtractor
from ..utils import (
ExtractorError,
determine_ext,
int_or_none,
unified_strdate,
US_RATINGS,
)
class PBSIE(InfoExtractor):
_VALID_URL = r'''(?x)https?://
(?:
# Direct video URL
video\.pbs\.org/(?:viralplayer|video)/(?P<id>[0-9]+)/? |
# Article with embedded player (or direct video)
(?:www\.)?pbs\.org/(?:[^/]+/){2,5}(?P<presumptive_id>[^/]+?)(?:\.html)?/?(?:$|[?\#]) |
# Player
video\.pbs\.org/(?:widget/)?partnerplayer/(?P<player_id>[^/]+)/
)
'''
_TESTS = [
{
'url': 'http://www.pbs.org/tpt/constitution-usa-peter-sagal/watch/a-more-perfect-union/',
'md5': 'ce1888486f0908d555a8093cac9a7362',
'info_dict': {
'id': '2365006249',
'ext': 'mp4',
'title': 'Constitution USA with Peter Sagal - A More Perfect Union',
'description': 'md5:ba0c207295339c8d6eced00b7c363c6a',
'duration': 3190,
},
'params': {
'skip_download': True, # requires ffmpeg
},
},
{
'url': 'http://www.pbs.org/wgbh/pages/frontline/losing-iraq/',
'md5': '143c98aa54a346738a3d78f54c925321',
'info_dict': {
'id': '2365297690',
'ext': 'mp4',
'title': 'FRONTLINE - Losing Iraq',
'description': 'md5:f5bfbefadf421e8bb8647602011caf8e',
'duration': 5050,
},
'params': {
'skip_download': True, # requires ffmpeg
}
},
{
'url': 'http://www.pbs.org/newshour/bb/education-jan-june12-cyberschools_02-23/',
'md5': 'b19856d7f5351b17a5ab1dc6a64be633',
'info_dict': {
'id': '2201174722',
'ext': 'mp4',
'title': 'PBS NewsHour - Cyber Schools Gain Popularity, but Quality Questions Persist',
'description': 'md5:5871c15cba347c1b3d28ac47a73c7c28',
'duration': 801,
},
},
{
'url': 'http://www.pbs.org/wnet/gperf/dudamel-conducts-verdi-requiem-hollywood-bowl-full-episode/3374/',
'md5': 'c62859342be2a0358d6c9eb306595978',
'info_dict': {
'id': '2365297708',
'ext': 'mp4',
'description': 'md5:68d87ef760660eb564455eb30ca464fe',
'title': 'Great Performances - Dudamel Conducts Verdi Requiem at the Hollywood Bowl - Full',
'duration': 6559,
'thumbnail': 're:^https?://.*\.jpg$',
},
'params': {
'skip_download': True, # requires ffmpeg
},
},
{
'url': 'http://www.pbs.org/wgbh/nova/earth/killer-typhoon.html',
'md5': '908f3e5473a693b266b84e25e1cf9703',
'info_dict': {
'id': '2365160389',
'display_id': 'killer-typhoon',
'ext': 'mp4',
'description': 'md5:c741d14e979fc53228c575894094f157',
'title': 'NOVA - Killer Typhoon',
'duration': 3172,
'thumbnail': 're:^https?://.*\.jpg$',
'upload_date': '20140122',
'age_limit': 10,
},
'params': {
'skip_download': True, # requires ffmpeg
},
},
{
'url': 'http://www.pbs.org/wgbh/pages/frontline/united-states-of-secrets/',
'info_dict': {
'id': 'united-states-of-secrets',
},
'playlist_count': 2,
},
{
'url': 'http://www.pbs.org/wgbh/americanexperience/films/death/player/',
'info_dict': {
'id': '2280706814',
'display_id': 'player',
'ext': 'mp4',
'title': 'American Experience - Death and the Civil War',
'description': 'American Experience, TVs most-watched history series, brings to life the compelling stories from our past that inform our understanding of the world today.',
'duration': 6705,
'thumbnail': 're:^https?://.*\.jpg$',
},
'params': {
'skip_download': True, # requires ffmpeg
},
},
{
'url': 'http://video.pbs.org/video/2365367186/',
'info_dict': {
'id': '2365367186',
'display_id': '2365367186',
'ext': 'mp4',
'title': 'To Catch A Comet - Full Episode',
'description': 'On November 12, 2014, billions of kilometers from Earth, spacecraft orbiter Rosetta and lander Philae did what no other had dared to attempt \u2014 land on the volatile surface of a comet as it zooms around the sun at 67,000 km/hr. The European Space Agency hopes this mission can help peer into our past and unlock secrets of our origins.',
'duration': 3342,
'thumbnail': 're:^https?://.*\.jpg$',
},
'params': {
'skip_download': True, # requires ffmpeg
},
}
]
def _extract_webpage(self, url):
mobj = re.match(self._VALID_URL, url)
presumptive_id = mobj.group('presumptive_id')
display_id = presumptive_id
if presumptive_id:
webpage = self._download_webpage(url, display_id)
upload_date = unified_strdate(self._search_regex(
r'<input type="hidden" id="air_date_[0-9]+" value="([^"]+)"',
webpage, 'upload date', default=None))
# tabbed frontline videos
tabbed_videos = re.findall(
r'<div[^>]+class="videotab[^"]*"[^>]+vid="(\d+)"', webpage)
if tabbed_videos:
return tabbed_videos, presumptive_id, upload_date
MEDIA_ID_REGEXES = [
r"div\s*:\s*'videoembed'\s*,\s*mediaid\s*:\s*'(\d+)'", # frontline video embed
r'class="coveplayerid">([^<]+)<', # coveplayer
r'<input type="hidden" id="pbs_video_id_[0-9]+" value="([0-9]+)"/>', # jwplayer
]
media_id = self._search_regex(
MEDIA_ID_REGEXES, webpage, 'media ID', fatal=False, default=None)
if media_id:
return media_id, presumptive_id, upload_date
url = self._search_regex(
r'<iframe\s+[^>]*\s+src=["\']([^\'"]+partnerplayer[^\'"]+)["\']',
webpage, 'player URL')
mobj = re.match(self._VALID_URL, url)
player_id = mobj.group('player_id')
if not display_id:
display_id = player_id
if player_id:
player_page = self._download_webpage(
url, display_id, note='Downloading player page',
errnote='Could not download player page')
video_id = self._search_regex(
r'<div\s+id="video_([0-9]+)"', player_page, 'video ID')
else:
video_id = mobj.group('id')
display_id = video_id
return video_id, display_id, None
def _real_extract(self, url):
video_id, display_id, upload_date = self._extract_webpage(url)
if isinstance(video_id, list):
entries = [self.url_result(
'http://video.pbs.org/video/%s' % vid_id, 'PBS', vid_id)
for vid_id in video_id]
return self.playlist_result(entries, display_id)
info = self._download_json(
'http://video.pbs.org/videoInfo/%s?format=json&type=partner' % video_id,
display_id)
formats = []
for encoding_name in ('recommended_encoding', 'alternate_encoding'):
redirect = info.get(encoding_name)
if not redirect:
continue
redirect_url = redirect.get('url')
if not redirect_url:
continue
redirect_info = self._download_json(
redirect_url + '?format=json', display_id,
'Downloading %s video url info' % encoding_name)
if redirect_info['status'] == 'error':
if redirect_info['http_code'] == 403:
message = (
'The video is not available in your region due to '
'right restrictions')
else:
message = redirect_info['message']
raise ExtractorError(message, expected=True)
format_url = redirect_info.get('url')
if not format_url:
continue
if determine_ext(format_url) == 'm3u8':
formats.extend(self._extract_m3u8_formats(
format_url, display_id, 'mp4', preference=1, m3u8_id='hls'))
else:
formats.append({
'url': format_url,
'format_id': redirect.get('eeid'),
})
self._sort_formats(formats)
rating_str = info.get('rating')
if rating_str is not None:
rating_str = rating_str.rpartition('-')[2]
age_limit = US_RATINGS.get(rating_str)
subtitles = {}
closed_captions_url = info.get('closed_captions_url')
if closed_captions_url:
subtitles['en'] = [{
'ext': 'ttml',
'url': closed_captions_url,
}]
# info['title'] is often incomplete (e.g. 'Full Episode', 'Episode 5', etc)
# Try turning it to 'program - title' naming scheme if possible
alt_title = info.get('program', {}).get('title')
if alt_title:
info['title'] = alt_title + ' - ' + re.sub(r'^' + alt_title + '[\s\-:]+', '', info['title'])
return {
'id': video_id,
'display_id': display_id,
'title': info['title'],
'description': info['program'].get('description'),
'thumbnail': info.get('image_url'),
'duration': int_or_none(info.get('duration')),
'age_limit': age_limit,
'upload_date': upload_date,
'formats': formats,
'subtitles': subtitles,
}