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[youtube] Convert to new subtitles system 

The automatic captions are stored in the 'automactic_captions' field, which is used if no normal subtitles are found for an specific language.
This commit is contained in:
Jaime Marquínez Ferrándiz 2015-02-16 21:44:17 +01:00
parent a1f2a06b34
commit 360e1ca5cc
4 changed files with 61 additions and 37 deletions
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5
test/test_subtitles.py
View File

@ -50,11 +50,6 @@ class TestYoutubeSubtitles(BaseTestSubtitles):
url = 'QRS8MkLhQmM'
IE = YoutubeIE
def test_youtube_no_writesubtitles(self):
self.DL.params['writesubtitles'] = False
subtitles = self.getSubtitles()
self.assertEqual(subtitles, None)
def test_youtube_subtitles(self):
self.DL.params['writesubtitles'] = True
subtitles = self.getSubtitles()

24
youtube_dl/YoutubeDL.py
View File

@ -1020,9 +1020,13 @@ class YoutubeDL(object):
info_dict['upload_date'] = upload_date.strftime('%Y%m%d')
if self.params.get('listsubtitles', False):
self.list_subtitles(info_dict['id'], info_dict.get('subtitles'))
if 'automatic_captions' in info_dict:
self.list_subtitles(info_dict['id'], info_dict.get('automatic_captions'), 'automatic captions')
self.list_subtitles(info_dict['id'], info_dict.get('subtitles'), 'subtitles')
return
info_dict['requested_subtitles'] = self.process_subtitles(info_dict['id'], info_dict.get('subtitles'))
info_dict['requested_subtitles'] = self.process_subtitles(
info_dict['id'], info_dict.get('subtitles'),
info_dict.get('automatic_captions'))
# This extractors handle format selection themselves
if info_dict['extractor'] in ['Youku']:
@ -1152,8 +1156,14 @@ class YoutubeDL(object):
info_dict.update(formats_to_download[-1])
return info_dict
def process_subtitles(self, video_id, available_subs):
def process_subtitles(self, video_id, available_subs, available_autocaps):
"""Select the requested subtitles and their format"""
if available_autocaps and self.params.get('writeautomaticsub'):
available_subs = available_subs.copy()
for lang, cap_info in available_autocaps.items():
if lang not in available_subs:
available_subs[lang] = cap_info
if not available_subs:
return available_subs
@ -1645,17 +1655,17 @@ class YoutubeDL(object):
['ID', 'width', 'height', 'URL'],
[[t['id'], t.get('width', 'unknown'), t.get('height', 'unknown'), t['url']] for t in thumbnails]))
def list_subtitles(self, video_id, subtitles):
def list_subtitles(self, video_id, subtitles, name='subtitles'):
if not subtitles:
self.to_screen('%s has no subtitles' % video_id)
self.to_screen('%s has no %s' % (video_id, name))
return
header_line = 'Language formats'
sub_lines = [
'%-12s%s' % (lang, ', '.join(f['ext'] for f in reversed(formats)))
for lang, formats in subtitles.items()]
self.to_screen(
'Available subtitles for %s:\n%s\n%s' %
(video_id, header_line, '\n'.join(sub_lines)))
'Available %s for %s:\n%s\n%s' %
(name, video_id, header_line, '\n'.join(sub_lines)))
def urlopen(self, req):
""" Start an HTTP download """

12
youtube_dl/extractor/common.py
View File

@ -157,6 +157,8 @@ class InfoExtractor(object):
with the "ext" entry and one of:
* "data": The subtitles file contents
* "url": A url pointing to the subtitles file
automatic_captions: Like 'subtitles', used by the YoutubeIE for
automatically generated captions
duration: Length of the video in seconds, as an integer.
view_count: How many users have watched the video on the platform.
like_count: Number of positive ratings of the video
@ -1007,6 +1009,16 @@ class InfoExtractor(object):
def _get_subtitles(self, *args, **kwargs):
raise NotImplementedError("This method must be implemented by subclasses")
def extract_automatic_captions(self, *args, **kwargs):
automatic_captions = {}
list_subtitles = self._downloader.params.get('listsubtitles')
if self._downloader.params.get('writeautomaticsub', False) or list_subtitles:
automatic_captions.update(self._get_automatic_captions(*args, **kwargs))
return automatic_captions
def _get_automatic_captions(self, *args, **kwargs):
raise NotImplementedError("This method must be implemented by subclasses")
class SearchInfoExtractor(InfoExtractor):
"""

57
youtube_dl/extractor/youtube.py
View File

@ -11,7 +11,6 @@ import time
import traceback
from .common import InfoExtractor, SearchInfoExtractor
from .subtitles import SubtitlesInfoExtractor
from ..jsinterp import JSInterpreter
from ..swfinterp import SWFInterpreter
from ..compat import (
@ -185,7 +184,7 @@ class YoutubeBaseInfoExtractor(InfoExtractor):
return
class YoutubeIE(YoutubeBaseInfoExtractor, SubtitlesInfoExtractor):
class YoutubeIE(YoutubeBaseInfoExtractor):
IE_DESC = 'YouTube.com'
_VALID_URL = r"""(?x)^
(
@ -644,7 +643,7 @@ class YoutubeIE(YoutubeBaseInfoExtractor, SubtitlesInfoExtractor):
raise ExtractorError(
'Signature extraction failed: ' + tb, cause=e)
def _get_available_subtitles(self, video_id, webpage):
def _get_subtitles(self, video_id, webpage):
try:
subs_doc = self._download_xml(
'https://video.google.com/timedtext?hl=en&type=list&v=%s' % video_id,
@ -658,23 +657,27 @@ class YoutubeIE(YoutubeBaseInfoExtractor, SubtitlesInfoExtractor):
lang = track.attrib['lang_code']
if lang in sub_lang_list:
continue
params = compat_urllib_parse.urlencode({
'lang': lang,
'v': video_id,
'fmt': self._downloader.params.get('subtitlesformat', 'srt'),
'name': track.attrib['name'].encode('utf-8'),
})
url = 'https://www.youtube.com/api/timedtext?' + params
sub_lang_list[lang] = url
sub_formats = []
for ext in ['sbv', 'vtt', 'srt']:
params = compat_urllib_parse.urlencode({
'lang': lang,
'v': video_id,
'fmt': ext,
'name': track.attrib['name'].encode('utf-8'),
})
sub_formats.append({
'url': 'https://www.youtube.com/api/timedtext?' + params,
'ext': ext,
})
sub_lang_list[lang] = sub_formats
if not sub_lang_list:
self._downloader.report_warning('video doesn\'t have subtitles')
return {}
return sub_lang_list
def _get_available_automatic_caption(self, video_id, webpage):
def _get_automatic_captions(self, video_id, webpage):
"""We need the webpage for getting the captions url, pass it as an
argument to speed up the process."""
sub_format = self._downloader.params.get('subtitlesformat', 'srt')
self.to_screen('%s: Looking for automatic captions' % video_id)
mobj = re.search(r';ytplayer.config = ({.*?});', webpage)
err_msg = 'Couldn\'t find automatic captions for %s' % video_id
@ -704,14 +707,20 @@ class YoutubeIE(YoutubeBaseInfoExtractor, SubtitlesInfoExtractor):
sub_lang_list = {}
for lang_node in caption_list.findall('target'):
sub_lang = lang_node.attrib['lang_code']
params = compat_urllib_parse.urlencode({
'lang': original_lang,
'tlang': sub_lang,
'fmt': sub_format,
'ts': timestamp,
'kind': caption_kind,
})
sub_lang_list[sub_lang] = caption_url + '&' + params
sub_formats = []
for ext in ['sbv', 'vtt', 'srt']:
params = compat_urllib_parse.urlencode({
'lang': original_lang,
'tlang': sub_lang,
'fmt': ext,
'ts': timestamp,
'kind': caption_kind,
})
sub_formats.append({
'url': caption_url + '&' + params,
'ext': ext,
})
sub_lang_list[sub_lang] = sub_formats
return sub_lang_list
# An extractor error can be raise by the download process if there are
# no automatic captions but there are subtitles
@ -966,10 +975,7 @@ class YoutubeIE(YoutubeBaseInfoExtractor, SubtitlesInfoExtractor):
# subtitles
video_subtitles = self.extract_subtitles(video_id, video_webpage)
if self._downloader.params.get('listsubtitles', False):
self._list_available_subtitles(video_id, video_webpage)
return
automatic_captions = self.extract_automatic_captions(video_id, video_webpage)
if 'length_seconds' not in video_info:
self._downloader.report_warning('unable to extract video duration')
@ -1118,6 +1124,7 @@ class YoutubeIE(YoutubeBaseInfoExtractor, SubtitlesInfoExtractor):
'description': video_description,
'categories': video_categories,
'subtitles': video_subtitles,
'automatic_captions': automatic_captions,
'duration': video_duration,
'age_limit': 18 if age_gate else 0,
'annotations': video_annotations,