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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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6
test/parameters.json
View File

@ -36,5 +36,7 @@
"verbose": true,
"writedescription": false,
"writeinfojson": true,
"writesubtitles": false
}
"writesubtitles": false,
"onlysubtitles": false,
"allsubtitles": false
}

31
test/test_youtube_subtitles.py
View File

@ -38,27 +38,48 @@ class FakeDownloader(object):
md5 = lambda s: hashlib.md5(s.encode('utf-8')).hexdigest()
class TestYoutubeSubtitles(unittest.TestCase):
def setUp(self):
DL = FakeDownloader()
DL.params['allsubtitles'] = False
DL.params['writesubtitles'] = False
def test_youtube_no_subtitles(self):
DL = FakeDownloader()
DL.params['writesubtitles'] = False
IE = YoutubeIE(DL)
info_dict = IE.extract('QRS8MkLhQmM')
subtitles = info_dict[0]['subtitles']
self.assertEqual(subtitles, None)
def test_youtube_subtitles(self):
DL = FakeDownloader()
DL.params['writesubtitles'] = True
IE = YoutubeIE(DL)
info_dict = IE.extract('QRS8MkLhQmM')
self.assertEqual(md5(info_dict[0]['subtitles']), '4cd9278a35ba2305f47354ee13472260')
sub = info_dict[0]['subtitles'][0]
self.assertEqual(md5(sub[2]), '4cd9278a35ba2305f47354ee13472260')
def test_youtube_subtitles_it(self):
DL = FakeDownloader()
DL.params['writesubtitles'] = True
DL.params['subtitleslang'] = 'it'
IE = YoutubeIE(DL)
info_dict = IE.extract('QRS8MkLhQmM')
self.assertEqual(md5(info_dict[0]['subtitles']), '164a51f16f260476a05b50fe4c2f161d')
sub = info_dict[0]['subtitles'][0]
self.assertEqual(md5(sub[2]), '164a51f16f260476a05b50fe4c2f161d')
def test_youtube_onlysubtitles(self):
DL = FakeDownloader()
DL.params['writesubtitles'] = True
DL.params['onlysubtitles'] = True
IE = YoutubeIE(DL)
info_dict = IE.extract('QRS8MkLhQmM')
self.assertEqual(md5(info_dict[0]['subtitles']), '4cd9278a35ba2305f47354ee13472260')
sub = info_dict[0]['subtitles'][0]
self.assertEqual(md5(sub[2]), '4cd9278a35ba2305f47354ee13472260')
def test_youtube_allsubtitles(self):
DL = FakeDownloader()
DL.params['allsubtitles'] = True
IE = YoutubeIE(DL)
info_dict = IE.extract('QRS8MkLhQmM')
subtitles = info_dict[0]['subtitles']
self.assertEqual(len(subtitles), 12)
if __name__ == '__main__':
unittest.main()

28
youtube_dl/FileDownloader.py
View File

@ -80,6 +80,7 @@ class FileDownloader(object):
writeinfojson: Write the video description to a .info.json file
writesubtitles: Write the video subtitles to a .srt file
onlysubtitles: Downloads only the subtitles of the video
allsubtitles: Downloads all the subtitles of the video
subtitleslang: Language of the subtitles to download
test: Download only first bytes to test the downloader.
keepvideo: Keep the video file after post-processing
@ -442,18 +443,33 @@ class FileDownloader(object):
if self.params.get('writesubtitles', False) and 'subtitles' in info_dict and info_dict['subtitles']:
# subtitles download errors are already managed as troubles in relevant IE
# that way it will silently go on when used with unsupporting IE
subtitle = info_dict['subtitles'][0]
(srt_error, srt_lang, srt) = subtitle
try:
srtfn = filename.rsplit('.', 1)[0] + u'.srt'
if self.params.get('subtitleslang', False):
srtfn = filename.rsplit('.', 1)[0] + u'.' + self.params['subtitleslang'] + u'.srt'
srtfn = filename.rsplit('.', 1)[0] + u'.' + srt_lang + u'.srt'
self.report_writesubtitles(srtfn)
with io.open(encodeFilename(srtfn), 'w', encoding='utf-8') as srtfile:
srtfile.write(info_dict['subtitles'])
if self.params.get('onlysubtitles', False):
return
srtfile.write(srt)
except (OSError, IOError):
self.trouble(u'ERROR: Cannot write subtitles file ' + descfn)
return
if self.params.get('onlysubtitles', False):
return
if self.params.get('allsubtitles', False) and 'subtitles' in info_dict and info_dict['subtitles']:
subtitles = info_dict['subtitles']
for subtitle in subtitles:
(srt_error, srt_lang, srt) = subtitle
try:
srtfn = filename.rsplit('.', 1)[0] + u'.' + srt_lang + u'.srt'
self.report_writesubtitles(srtfn)
with io.open(encodeFilename(srtfn), 'w', encoding='utf-8') as srtfile:
srtfile.write(srt)
except (OSError, IOError):
self.trouble(u'ERROR: Cannot write subtitles file ' + descfn)
return
if self.params.get('onlysubtitles', False):
return
if self.params.get('writeinfojson', False):
infofn = filename + u'.info.json'

73
youtube_dl/InfoExtractors.py
View File

@ -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')

4
youtube_dl/__init__.py
View File

@ -179,6 +179,9 @@ def parseOpts():
video_format.add_option('--only-srt',
action='store_true', dest='onlysubtitles',
help='downloads only the subtitles of the video (currently youtube only)', default=False)
video_format.add_option('--all-srt',
action='store_true', dest='allsubtitles',
help='downloads all the available subtitles of the video (currently youtube only)', default=False)
video_format.add_option('--srt-lang',
action='store', dest='subtitleslang', metavar='LANG',
help='language of the closed captions to download (optional) use IETF language tags like \'en\'')
@ -454,6 +457,7 @@ def _real_main():
'writeinfojson': opts.writeinfojson,
'writesubtitles': opts.writesubtitles,
'onlysubtitles': opts.onlysubtitles,
'allsubtitles': opts.allsubtitles,
'subtitleslang': opts.subtitleslang,
'matchtitle': decodeOption(opts.matchtitle),
'rejecttitle': decodeOption(opts.rejecttitle),