mirror of
https://github.com/ytdl-org/youtube-dl
synced 2024-11-05 01:48:01 +09:00
[internal] Improved subtitle architecture + (update in
youtube/dailymotion) The structure of subtitles was refined, you only need to implement one method that returns a dictionnary of the available subtitles (lang, url) to support all the subtitle options in a website. I updated the subtitle downloaders for youtube/dailymotion to show how it works.
This commit is contained in:
Ismael Mejia
parent
372297e713
commit
8377574c9c
@ -1,6 +1,5 @@
|
||||
import re
|
||||
import json
|
||||
import itertools
|
||||
import socket
|
||||
|
||||
from .common import InfoExtractor
|
||||
@ -34,16 +33,12 @@ class DailyMotionSubtitlesIE(SubtitlesIE):
|
||||
self._downloader.report_warning(u'video doesn\'t have subtitles')
|
||||
return {}
|
||||
|
||||
def _get_subtitle_url(self, sub_lang, sub_name, video_id, format):
|
||||
sub_lang_list = self._get_available_subtitles(video_id)
|
||||
return sub_lang_list[sub_lang]
|
||||
|
||||
def _request_automatic_caption(self, video_id, webpage):
|
||||
self._downloader.report_warning(u'Automatic Captions not supported by dailymotion')
|
||||
self._downloader.report_warning(u'Automatic Captions not supported by this server')
|
||||
return {}
|
||||
|
||||
|
||||
class DailymotionIE(DailyMotionSubtitlesIE): #,InfoExtractor):
|
||||
class DailymotionIE(DailyMotionSubtitlesIE):
|
||||
"""Information Extractor for Dailymotion"""
|
||||
|
||||
_VALID_URL = r'(?i)(?:https?://)?(?:www\.)?dailymotion\.[a-z]{2,3}/video/([^/]+)'
|
||||
@ -116,12 +111,6 @@ class DailymotionIE(DailyMotionSubtitlesIE): #,InfoExtractor):
|
||||
self._list_available_subtitles(video_id)
|
||||
return
|
||||
|
||||
if 'length_seconds' not in info:
|
||||
self._downloader.report_warning(u'unable to extract video duration')
|
||||
video_duration = ''
|
||||
else:
|
||||
video_duration = compat_urllib_parse.unquote_plus(video_info['length_seconds'][0])
|
||||
|
||||
return [{
|
||||
'id': video_id,
|
||||
'url': video_url,
|
||||
|
||||
@ -15,7 +15,8 @@ class SubtitlesIE(InfoExtractor):
|
||||
def report_video_subtitles_available(self, video_id, sub_lang_list):
|
||||
"""Report available subtitles."""
|
||||
sub_lang = ",".join(list(sub_lang_list.keys()))
|
||||
self.to_screen(u'%s: Available subtitles for video: %s' % (video_id, sub_lang))
|
||||
self.to_screen(u'%s: Available subtitles for video: %s' %
|
||||
(video_id, sub_lang))
|
||||
|
||||
def _list_available_subtitles(self, video_id):
|
||||
sub_lang_list = self._get_available_subtitles(video_id)
|
||||
@ -27,9 +28,9 @@ class SubtitlesIE(InfoExtractor):
|
||||
couldn't be found
|
||||
"""
|
||||
sub_lang_list = self._get_available_subtitles(video_id)
|
||||
sub_format = self._downloader.params.get('subtitlesformat')
|
||||
if not sub_lang_list: #There was some error, it didn't get the available subtitles
|
||||
if not sub_lang_list: # error, it didn't get the available subtitles
|
||||
return {}
|
||||
|
||||
if self._downloader.params.get('writesubtitles', False):
|
||||
if self._downloader.params.get('subtitleslang', False):
|
||||
sub_lang = self._downloader.params.get('subtitleslang')
|
||||
@ -41,18 +42,15 @@ class SubtitlesIE(InfoExtractor):
|
||||
self._downloader.report_warning(u'no closed captions found in the specified language "%s"' % sub_lang)
|
||||
return {}
|
||||
sub_lang_list = {sub_lang: sub_lang_list[sub_lang]}
|
||||
|
||||
subtitles = {}
|
||||
for sub_lang in sub_lang_list:
|
||||
subtitle = self._request_subtitle(sub_lang, sub_lang_list[sub_lang].encode('utf-8'), video_id, sub_format)
|
||||
for sub_lang, url in sub_lang_list.iteritems():
|
||||
subtitle = self._request_subtitle_url(sub_lang, url)
|
||||
if subtitle:
|
||||
subtitles[sub_lang] = subtitle
|
||||
return subtitles
|
||||
|
||||
def _request_subtitle(self, sub_lang, sub_name, video_id, format):
|
||||
""" Return the subtitle as a string or None if they are not found """
|
||||
# return (u'Did not fetch video subtitles for %s' % sub_lang, None, None)
|
||||
self.to_screen(u'%s: Downloading video subtitles for %s.%s' % (video_id, sub_lang, format))
|
||||
url = self._get_subtitle_url(sub_lang, sub_name, video_id, format)
|
||||
def _request_subtitle_url(self, sub_lang, url):
|
||||
try:
|
||||
sub = compat_urllib_request.urlopen(url).read().decode('utf-8')
|
||||
except (compat_urllib_error.URLError, compat_http_client.HTTPException, socket.error) as err:
|
||||
@ -64,13 +62,8 @@ class SubtitlesIE(InfoExtractor):
|
||||
return sub
|
||||
|
||||
def _get_available_subtitles(self, video_id):
|
||||
"""Get available subtitles. Redefine in subclasses."""
|
||||
"""returns {(lang, url)} """
|
||||
# return {}
|
||||
pass
|
||||
|
||||
def _get_subtitle_url(self, sub_lang, sub_name, video_id, format):
|
||||
"""returns the url for the given subtitle. Redefine in subclasses."""
|
||||
"""returns the list of available subtitles like this {lang: url} """
|
||||
"""or {} if not available. Must be redefined by the subclasses."""
|
||||
pass
|
||||
|
||||
def _request_automatic_caption(self, video_id, webpage):
|
||||
|
||||
@ -7,6 +7,7 @@ import socket
|
||||
import itertools
|
||||
|
||||
from .common import InfoExtractor, SearchInfoExtractor
|
||||
from .subtitles import SubtitlesIE
|
||||
from ..utils import (
|
||||
compat_http_client,
|
||||
compat_parse_qs,
|
||||
@ -24,7 +25,66 @@ from ..utils import (
|
||||
)
|
||||
|
||||
|
||||
class YoutubeIE(InfoExtractor):
|
||||
class YoutubeSubtitlesIE(SubtitlesIE):
|
||||
|
||||
def _get_available_subtitles(self, video_id):
|
||||
request = compat_urllib_request.Request('http://video.google.com/timedtext?hl=en&type=list&v=%s' % video_id)
|
||||
try:
|
||||
sub_list = compat_urllib_request.urlopen(request).read().decode('utf-8')
|
||||
except (compat_urllib_error.URLError, compat_http_client.HTTPException, socket.error) as err:
|
||||
self._downloader.report_warning(u'unable to download video subtitles: %s' % compat_str(err))
|
||||
return {}
|
||||
lang_list = re.findall(r'name="([^"]*)"[^>]+lang_code="([\w\-]+)"', sub_list)
|
||||
|
||||
sub_lang_list = {}
|
||||
for l in lang_list:
|
||||
lang = l[1]
|
||||
params = compat_urllib_parse.urlencode({
|
||||
'lang': lang,
|
||||
'v': video_id,
|
||||
'fmt': self._downloader.params.get('subtitlesformat'),
|
||||
})
|
||||
url = u'http://www.youtube.com/api/timedtext?' + params
|
||||
sub_lang_list[lang] = url
|
||||
if not sub_lang_list:
|
||||
self._downloader.report_warning(u'video doesn\'t have subtitles')
|
||||
return {}
|
||||
return sub_lang_list
|
||||
|
||||
def _request_automatic_caption(self, video_id, webpage):
|
||||
"""We need the webpage for getting the captions url, pass it as an
|
||||
argument to speed up the process."""
|
||||
sub_lang = self._downloader.params.get('subtitleslang') or 'en'
|
||||
sub_format = self._downloader.params.get('subtitlesformat')
|
||||
self.to_screen(u'%s: Looking for automatic captions' % video_id)
|
||||
mobj = re.search(r';ytplayer.config = ({.*?});', webpage)
|
||||
err_msg = u'Couldn\'t find automatic captions for "%s"' % sub_lang
|
||||
if mobj is None:
|
||||
self._downloader.report_warning(err_msg)
|
||||
return {}
|
||||
player_config = json.loads(mobj.group(1))
|
||||
try:
|
||||
args = player_config[u'args']
|
||||
caption_url = args[u'ttsurl']
|
||||
timestamp = args[u'timestamp']
|
||||
params = compat_urllib_parse.urlencode({
|
||||
'lang': 'en',
|
||||
'tlang': sub_lang,
|
||||
'fmt': sub_format,
|
||||
'ts': timestamp,
|
||||
'kind': 'asr',
|
||||
})
|
||||
subtitles_url = caption_url + '&' + params
|
||||
sub = self._download_webpage(subtitles_url, video_id, u'Downloading automatic captions')
|
||||
return {sub_lang: sub}
|
||||
# An extractor error can be raise by the download process if there are
|
||||
# no automatic captions but there are subtitles
|
||||
except (KeyError, ExtractorError):
|
||||
self._downloader.report_warning(err_msg)
|
||||
return {}
|
||||
|
||||
|
||||
class YoutubeIE(YoutubeSubtitlesIE):
|
||||
IE_DESC = u'YouTube.com'
|
||||
_VALID_URL = r"""^
|
||||
(
|
||||
@ -151,19 +211,6 @@ class YoutubeIE(InfoExtractor):
|
||||
"""Report attempt to download video info webpage."""
|
||||
self.to_screen(u'%s: Downloading video info webpage' % video_id)
|
||||
|
||||
def report_video_subtitles_download(self, video_id):
|
||||
"""Report attempt to download video info webpage."""
|
||||
self.to_screen(u'%s: Checking available subtitles' % video_id)
|
||||
|
||||
def report_video_subtitles_request(self, video_id, sub_lang, format):
|
||||
"""Report attempt to download video info webpage."""
|
||||
self.to_screen(u'%s: Downloading video subtitles for %s.%s' % (video_id, sub_lang, format))
|
||||
|
||||
def report_video_subtitles_available(self, video_id, sub_lang_list):
|
||||
"""Report available subtitles."""
|
||||
sub_lang = ",".join(list(sub_lang_list.keys()))
|
||||
self.to_screen(u'%s: Available subtitles for video: %s' % (video_id, sub_lang))
|
||||
|
||||
def report_information_extraction(self, video_id):
|
||||
"""Report attempt to extract video information."""
|
||||
self.to_screen(u'%s: Extracting video information' % video_id)
|
||||
@ -203,106 +250,6 @@ class YoutubeIE(InfoExtractor):
|
||||
else:
|
||||
raise ExtractorError(u'Unable to decrypt signature, key length %d not supported; retrying might work' % (len(s)))
|
||||
|
||||
def _get_available_subtitles(self, video_id):
|
||||
self.report_video_subtitles_download(video_id)
|
||||
request = compat_urllib_request.Request('http://video.google.com/timedtext?hl=en&type=list&v=%s' % video_id)
|
||||
try:
|
||||
sub_list = compat_urllib_request.urlopen(request).read().decode('utf-8')
|
||||
except (compat_urllib_error.URLError, compat_http_client.HTTPException, socket.error) as err:
|
||||
self._downloader.report_warning(u'unable to download video subtitles: %s' % compat_str(err))
|
||||
return {}
|
||||
sub_lang_list = re.findall(r'name="([^"]*)"[^>]+lang_code="([\w\-]+)"', sub_list)
|
||||
sub_lang_list = dict((l[1], l[0]) for l in sub_lang_list)
|
||||
if not sub_lang_list:
|
||||
self._downloader.report_warning(u'video doesn\'t have subtitles')
|
||||
return {}
|
||||
return sub_lang_list
|
||||
|
||||
def _list_available_subtitles(self, video_id):
|
||||
sub_lang_list = self._get_available_subtitles(video_id)
|
||||
self.report_video_subtitles_available(video_id, sub_lang_list)
|
||||
|
||||
def _request_subtitle(self, sub_lang, sub_name, video_id, format):
|
||||
"""
|
||||
Return the subtitle as a string or None if they are not found
|
||||
"""
|
||||
self.report_video_subtitles_request(video_id, sub_lang, format)
|
||||
params = compat_urllib_parse.urlencode({
|
||||
'lang': sub_lang,
|
||||
'name': sub_name,
|
||||
'v': video_id,
|
||||
'fmt': format,
|
||||
})
|
||||
url = 'http://www.youtube.com/api/timedtext?' + params
|
||||
try:
|
||||
sub = compat_urllib_request.urlopen(url).read().decode('utf-8')
|
||||
except (compat_urllib_error.URLError, compat_http_client.HTTPException, socket.error) as err:
|
||||
self._downloader.report_warning(u'unable to download video subtitles for %s: %s' % (sub_lang, compat_str(err)))
|
||||
return
|
||||
if not sub:
|
||||
self._downloader.report_warning(u'Did not fetch video subtitles')
|
||||
return
|
||||
return sub
|
||||
|
||||
def _request_automatic_caption(self, video_id, webpage):
|
||||
"""We need the webpage for getting the captions url, pass it as an
|
||||
argument to speed up the process."""
|
||||
sub_lang = self._downloader.params.get('subtitleslang') or 'en'
|
||||
sub_format = self._downloader.params.get('subtitlesformat')
|
||||
self.to_screen(u'%s: Looking for automatic captions' % video_id)
|
||||
mobj = re.search(r';ytplayer.config = ({.*?});', webpage)
|
||||
err_msg = u'Couldn\'t find automatic captions for "%s"' % sub_lang
|
||||
if mobj is None:
|
||||
self._downloader.report_warning(err_msg)
|
||||
return {}
|
||||
player_config = json.loads(mobj.group(1))
|
||||
try:
|
||||
args = player_config[u'args']
|
||||
caption_url = args[u'ttsurl']
|
||||
timestamp = args[u'timestamp']
|
||||
params = compat_urllib_parse.urlencode({
|
||||
'lang': 'en',
|
||||
'tlang': sub_lang,
|
||||
'fmt': sub_format,
|
||||
'ts': timestamp,
|
||||
'kind': 'asr',
|
||||
})
|
||||
subtitles_url = caption_url + '&' + params
|
||||
sub = self._download_webpage(subtitles_url, video_id, u'Downloading automatic captions')
|
||||
return {sub_lang: sub}
|
||||
# An extractor error can be raise by the download process if there are
|
||||
# no automatic captions but there are subtitles
|
||||
except (KeyError, ExtractorError):
|
||||
self._downloader.report_warning(err_msg)
|
||||
return {}
|
||||
|
||||
def _extract_subtitles(self, video_id):
|
||||
"""
|
||||
Return a dictionary: {language: subtitles} or {} if the subtitles
|
||||
couldn't be found
|
||||
"""
|
||||
sub_lang_list = self._get_available_subtitles(video_id)
|
||||
sub_format = self._downloader.params.get('subtitlesformat')
|
||||
if not sub_lang_list: #There was some error, it didn't get the available subtitles
|
||||
return {}
|
||||
if self._downloader.params.get('writesubtitles', False):
|
||||
if self._downloader.params.get('subtitleslang', False):
|
||||
sub_lang = self._downloader.params.get('subtitleslang')
|
||||
elif 'en' in sub_lang_list:
|
||||
sub_lang = 'en'
|
||||
else:
|
||||
sub_lang = list(sub_lang_list.keys())[0]
|
||||
if not sub_lang in sub_lang_list:
|
||||
self._downloader.report_warning(u'no closed captions found in the specified language "%s"' % sub_lang)
|
||||
return {}
|
||||
sub_lang_list = {sub_lang: sub_lang_list[sub_lang]}
|
||||
subtitles = {}
|
||||
for sub_lang in sub_lang_list:
|
||||
subtitle = self._request_subtitle(sub_lang, sub_lang_list[sub_lang].encode('utf-8'), video_id, sub_format)
|
||||
if subtitle:
|
||||
subtitles[sub_lang] = subtitle
|
||||
return subtitles
|
||||
|
||||
def _print_formats(self, formats):
|
||||
print('Available formats:')
|
||||
for x in formats:
|
||||
|
||||
Loading…
Reference in New Issue
Block a user