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Added new option '--all-srt' to download all the subtitles of a video.

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Only works in youtube for the moment.
This commit is contained in:
Ismael Mejia 2013-02-22 02:52:55 +01:00 • committed by Filippo Valsorda
parent cdb130b09a
commit ae608b8076
5 changed files with 107 additions and 35 deletions
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73
youtube_dl/InfoExtractors.py
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@ -216,6 +216,10 @@ class YoutubeIE(InfoExtractor):
"""Report attempt to download video info webpage."""
self._downloader.to_screen(u'[youtube] %s: Downloading video subtitles' % video_id)
def report_video_subtitles_request(self, video_id, lang):
"""Report attempt to download video info webpage."""
self._downloader.to_screen(u'[youtube] %s: Downloading video subtitles for lang: %s' % (video_id,lang))
def report_information_extraction(self, video_id):
"""Report attempt to extract video information."""
self._downloader.to_screen(u'[youtube] %s: Extracting video information' % video_id)
@ -228,9 +232,7 @@ class YoutubeIE(InfoExtractor):
"""Indicate the download will use the RTMP protocol."""
self._downloader.to_screen(u'[youtube] RTMP download detected')
def _extract_subtitles(self, video_id):
self.report_video_subtitles_download(video_id)
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:
srt_list = compat_urllib_request.urlopen(request).read().decode('utf-8')
@ -240,19 +242,15 @@ class YoutubeIE(InfoExtractor):
srt_lang_list = dict((l[1], l[0]) for l in srt_lang_list)
if not srt_lang_list:
return (u'WARNING: video has no closed captions', None)
if self._downloader.params.get('subtitleslang', False):
srt_lang = self._downloader.params.get('subtitleslang')
elif 'en' in srt_lang_list:
srt_lang = 'en'
else:
srt_lang = list(srt_lang_list.keys())[0]
if not srt_lang in srt_lang_list:
return (u'WARNING: no closed captions found in the specified language "%s"' % srt_lang, None)
return srt_lang_list
def _request_subtitle(self, str_lang, str_name, video_id, format = 'srt'):
self.report_video_subtitles_request(video_id, str_lang)
params = compat_urllib_parse.urlencode({
'lang': srt_lang,
'name': srt_lang_list[srt_lang].encode('utf-8'),
'lang': str_lang,
'name': str_name,
'v': video_id,
'fmt': 'srt',
'fmt': format,
})
url = 'http://www.youtube.com/api/timedtext?' + params
try:
@ -261,7 +259,32 @@ class YoutubeIE(InfoExtractor):
return (u'WARNING: unable to download video subtitles: %s' % compat_str(err), None)
if not srt:
return (u'WARNING: Did not fetch video subtitles', None)
return (None, srt)
return (None, str_lang, srt)
def _extract_subtitle(self, video_id):
self.report_video_subtitles_download(video_id)
srt_lang_list = self._get_available_subtitles(video_id)
if self._downloader.params.get('subtitleslang', False):
srt_lang = self._downloader.params.get('subtitleslang')
elif 'en' in srt_lang_list:
srt_lang = 'en'
else:
srt_lang = list(srt_lang_list.keys())[0]
if not srt_lang in srt_lang_list:
return (u'WARNING: no closed captions found in the specified language "%s"' % srt_lang, None)
sub = self._request_subtitle(srt_lang, srt_lang_list[srt_lang].encode('utf-8'), video_id)
return [sub]
def _extract_all_subtitles(self, video_id):
self.report_video_subtitles_download(video_id)
srt_lang_list = self._get_available_subtitles(video_id)
subs = []
for srt_lang in srt_lang_list:
sub = self._request_subtitle(srt_lang, srt_lang_list[srt_lang].encode('utf-8'), video_id)
subs.append(sub)
return subs
def _print_formats(self, formats):
print('Available formats:')
@ -484,14 +507,20 @@ class YoutubeIE(InfoExtractor):
# closed captions
video_subtitles = None
if self._downloader.params.get('subtitleslang', False):
self._downloader.params['writesubtitles'] = True
if self._downloader.params.get('onlysubtitles', False):
self._downloader.params['writesubtitles'] = True
if self._downloader.params.get('writesubtitles', False):
(srt_error, video_subtitles) = self._extract_subtitles(video_id)
if srt_error:
self._downloader.trouble(srt_error)
video_subtitles = self._extract_subtitle(video_id)
if video_subtitles:
(srt_error, srt_lang, srt) = video_subtitles[0]
if srt_error:
self._downloader.trouble(srt_error)
if self._downloader.params.get('allsubtitles', False):
video_subtitles = self._extract_all_subtitles(video_id)
for video_subtitle in video_subtitles:
(srt_error, srt_lang, srt) = video_subtitle
if srt_error:
self._downloader.trouble(srt_error)
if 'length_seconds' not in video_info:
self._downloader.trouble(u'WARNING: unable to extract video duration')