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https://github.com/yt-dlp/yt-dlp
synced 2024-11-17 15:20:37 +01:00
Added new option '--all-srt' to download all the subtitles of a video.
Only works in youtube for the moment.
This commit is contained in:
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commit
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@ -36,5 +36,7 @@
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"verbose": true,
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"writedescription": false,
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"writeinfojson": true,
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"writesubtitles": false
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}
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"writesubtitles": false,
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"onlysubtitles": false,
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"allsubtitles": false
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}
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@ -38,27 +38,48 @@ class FakeDownloader(object):
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md5 = lambda s: hashlib.md5(s.encode('utf-8')).hexdigest()
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class TestYoutubeSubtitles(unittest.TestCase):
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def setUp(self):
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DL = FakeDownloader()
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DL.params['allsubtitles'] = False
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DL.params['writesubtitles'] = False
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def test_youtube_no_subtitles(self):
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DL = FakeDownloader()
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DL.params['writesubtitles'] = False
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IE = YoutubeIE(DL)
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info_dict = IE.extract('QRS8MkLhQmM')
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subtitles = info_dict[0]['subtitles']
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self.assertEqual(subtitles, None)
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def test_youtube_subtitles(self):
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DL = FakeDownloader()
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DL.params['writesubtitles'] = True
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IE = YoutubeIE(DL)
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info_dict = IE.extract('QRS8MkLhQmM')
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self.assertEqual(md5(info_dict[0]['subtitles']), '4cd9278a35ba2305f47354ee13472260')
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sub = info_dict[0]['subtitles'][0]
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self.assertEqual(md5(sub[2]), '4cd9278a35ba2305f47354ee13472260')
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def test_youtube_subtitles_it(self):
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DL = FakeDownloader()
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DL.params['writesubtitles'] = True
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DL.params['subtitleslang'] = 'it'
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IE = YoutubeIE(DL)
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info_dict = IE.extract('QRS8MkLhQmM')
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self.assertEqual(md5(info_dict[0]['subtitles']), '164a51f16f260476a05b50fe4c2f161d')
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sub = info_dict[0]['subtitles'][0]
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self.assertEqual(md5(sub[2]), '164a51f16f260476a05b50fe4c2f161d')
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def test_youtube_onlysubtitles(self):
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DL = FakeDownloader()
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DL.params['writesubtitles'] = True
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DL.params['onlysubtitles'] = True
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IE = YoutubeIE(DL)
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info_dict = IE.extract('QRS8MkLhQmM')
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self.assertEqual(md5(info_dict[0]['subtitles']), '4cd9278a35ba2305f47354ee13472260')
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sub = info_dict[0]['subtitles'][0]
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self.assertEqual(md5(sub[2]), '4cd9278a35ba2305f47354ee13472260')
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def test_youtube_allsubtitles(self):
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DL = FakeDownloader()
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DL.params['allsubtitles'] = True
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IE = YoutubeIE(DL)
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info_dict = IE.extract('QRS8MkLhQmM')
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subtitles = info_dict[0]['subtitles']
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self.assertEqual(len(subtitles), 12)
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if __name__ == '__main__':
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unittest.main()
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@ -80,6 +80,7 @@ class FileDownloader(object):
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writeinfojson: Write the video description to a .info.json file
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writesubtitles: Write the video subtitles to a .srt file
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onlysubtitles: Downloads only the subtitles of the video
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allsubtitles: Downloads all the subtitles of the video
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subtitleslang: Language of the subtitles to download
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test: Download only first bytes to test the downloader.
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keepvideo: Keep the video file after post-processing
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@ -442,18 +443,33 @@ class FileDownloader(object):
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if self.params.get('writesubtitles', False) and 'subtitles' in info_dict and info_dict['subtitles']:
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# subtitles download errors are already managed as troubles in relevant IE
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# that way it will silently go on when used with unsupporting IE
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subtitle = info_dict['subtitles'][0]
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(srt_error, srt_lang, srt) = subtitle
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try:
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srtfn = filename.rsplit('.', 1)[0] + u'.srt'
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if self.params.get('subtitleslang', False):
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srtfn = filename.rsplit('.', 1)[0] + u'.' + self.params['subtitleslang'] + u'.srt'
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srtfn = filename.rsplit('.', 1)[0] + u'.' + srt_lang + u'.srt'
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self.report_writesubtitles(srtfn)
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with io.open(encodeFilename(srtfn), 'w', encoding='utf-8') as srtfile:
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srtfile.write(info_dict['subtitles'])
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if self.params.get('onlysubtitles', False):
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return
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srtfile.write(srt)
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except (OSError, IOError):
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self.trouble(u'ERROR: Cannot write subtitles file ' + descfn)
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return
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if self.params.get('onlysubtitles', False):
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return
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if self.params.get('allsubtitles', False) and 'subtitles' in info_dict and info_dict['subtitles']:
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subtitles = info_dict['subtitles']
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for subtitle in subtitles:
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(srt_error, srt_lang, srt) = subtitle
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try:
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srtfn = filename.rsplit('.', 1)[0] + u'.' + srt_lang + u'.srt'
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self.report_writesubtitles(srtfn)
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with io.open(encodeFilename(srtfn), 'w', encoding='utf-8') as srtfile:
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srtfile.write(srt)
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except (OSError, IOError):
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self.trouble(u'ERROR: Cannot write subtitles file ' + descfn)
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return
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if self.params.get('onlysubtitles', False):
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return
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if self.params.get('writeinfojson', False):
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infofn = filename + u'.info.json'
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@ -216,6 +216,10 @@ class YoutubeIE(InfoExtractor):
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"""Report attempt to download video info webpage."""
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self._downloader.to_screen(u'[youtube] %s: Downloading video subtitles' % video_id)
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def report_video_subtitles_request(self, video_id, lang):
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"""Report attempt to download video info webpage."""
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self._downloader.to_screen(u'[youtube] %s: Downloading video subtitles for lang: %s' % (video_id,lang))
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def report_information_extraction(self, video_id):
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"""Report attempt to extract video information."""
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self._downloader.to_screen(u'[youtube] %s: Extracting video information' % video_id)
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@ -228,9 +232,7 @@ class YoutubeIE(InfoExtractor):
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"""Indicate the download will use the RTMP protocol."""
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self._downloader.to_screen(u'[youtube] RTMP download detected')
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def _extract_subtitles(self, video_id):
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self.report_video_subtitles_download(video_id)
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def _get_available_subtitles(self, video_id):
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request = compat_urllib_request.Request('http://video.google.com/timedtext?hl=en&type=list&v=%s' % video_id)
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try:
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srt_list = compat_urllib_request.urlopen(request).read().decode('utf-8')
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@ -240,19 +242,15 @@ class YoutubeIE(InfoExtractor):
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srt_lang_list = dict((l[1], l[0]) for l in srt_lang_list)
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if not srt_lang_list:
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return (u'WARNING: video has no closed captions', None)
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if self._downloader.params.get('subtitleslang', False):
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srt_lang = self._downloader.params.get('subtitleslang')
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elif 'en' in srt_lang_list:
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srt_lang = 'en'
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else:
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srt_lang = list(srt_lang_list.keys())[0]
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if not srt_lang in srt_lang_list:
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return (u'WARNING: no closed captions found in the specified language "%s"' % srt_lang, None)
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return srt_lang_list
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def _request_subtitle(self, str_lang, str_name, video_id, format = 'srt'):
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self.report_video_subtitles_request(video_id, str_lang)
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params = compat_urllib_parse.urlencode({
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'lang': srt_lang,
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'name': srt_lang_list[srt_lang].encode('utf-8'),
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'lang': str_lang,
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'name': str_name,
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'v': video_id,
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'fmt': 'srt',
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'fmt': format,
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})
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url = 'http://www.youtube.com/api/timedtext?' + params
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try:
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@ -261,7 +259,32 @@ class YoutubeIE(InfoExtractor):
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return (u'WARNING: unable to download video subtitles: %s' % compat_str(err), None)
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if not srt:
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return (u'WARNING: Did not fetch video subtitles', None)
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return (None, srt)
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return (None, str_lang, srt)
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def _extract_subtitle(self, video_id):
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self.report_video_subtitles_download(video_id)
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srt_lang_list = self._get_available_subtitles(video_id)
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if self._downloader.params.get('subtitleslang', False):
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srt_lang = self._downloader.params.get('subtitleslang')
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elif 'en' in srt_lang_list:
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srt_lang = 'en'
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else:
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srt_lang = list(srt_lang_list.keys())[0]
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if not srt_lang in srt_lang_list:
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return (u'WARNING: no closed captions found in the specified language "%s"' % srt_lang, None)
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sub = self._request_subtitle(srt_lang, srt_lang_list[srt_lang].encode('utf-8'), video_id)
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return [sub]
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def _extract_all_subtitles(self, video_id):
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self.report_video_subtitles_download(video_id)
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srt_lang_list = self._get_available_subtitles(video_id)
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subs = []
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for srt_lang in srt_lang_list:
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sub = self._request_subtitle(srt_lang, srt_lang_list[srt_lang].encode('utf-8'), video_id)
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subs.append(sub)
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return subs
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def _print_formats(self, formats):
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print('Available formats:')
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@ -484,14 +507,20 @@ class YoutubeIE(InfoExtractor):
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# closed captions
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video_subtitles = None
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if self._downloader.params.get('subtitleslang', False):
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self._downloader.params['writesubtitles'] = True
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if self._downloader.params.get('onlysubtitles', False):
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self._downloader.params['writesubtitles'] = True
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if self._downloader.params.get('writesubtitles', False):
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(srt_error, video_subtitles) = self._extract_subtitles(video_id)
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if srt_error:
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self._downloader.trouble(srt_error)
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video_subtitles = self._extract_subtitle(video_id)
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if video_subtitles:
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(srt_error, srt_lang, srt) = video_subtitles[0]
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if srt_error:
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self._downloader.trouble(srt_error)
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if self._downloader.params.get('allsubtitles', False):
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video_subtitles = self._extract_all_subtitles(video_id)
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for video_subtitle in video_subtitles:
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(srt_error, srt_lang, srt) = video_subtitle
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if srt_error:
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self._downloader.trouble(srt_error)
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if 'length_seconds' not in video_info:
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self._downloader.trouble(u'WARNING: unable to extract video duration')
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@ -179,6 +179,9 @@ def parseOpts():
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video_format.add_option('--only-srt',
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action='store_true', dest='onlysubtitles',
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help='downloads only the subtitles of the video (currently youtube only)', default=False)
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video_format.add_option('--all-srt',
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action='store_true', dest='allsubtitles',
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help='downloads all the available subtitles of the video (currently youtube only)', default=False)
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video_format.add_option('--srt-lang',
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action='store', dest='subtitleslang', metavar='LANG',
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help='language of the closed captions to download (optional) use IETF language tags like \'en\'')
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@ -454,6 +457,7 @@ def _real_main():
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'writeinfojson': opts.writeinfojson,
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'writesubtitles': opts.writesubtitles,
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'onlysubtitles': opts.onlysubtitles,
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'allsubtitles': opts.allsubtitles,
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'subtitleslang': opts.subtitleslang,
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'matchtitle': decodeOption(opts.matchtitle),
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'rejecttitle': decodeOption(opts.rejecttitle),
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