Partially rewrite YouTube InfoExtractor after it stopped working

As part of the changes, the program now downloads the highest quality version
by default and uses fmt_url_map to decide which formats are really available.
This commit is contained in:
Ricardo Garcia 2010-07-22 20:29:52 +02:00
parent 460d8acbaa
commit 497cd3e68e

View file

@ -688,8 +688,8 @@ class YoutubeIE(InfoExtractor):
_LOGIN_URL = 'http://www.youtube.com/signup?next=/&gl=US&hl=en' _LOGIN_URL = 'http://www.youtube.com/signup?next=/&gl=US&hl=en'
_AGE_URL = 'http://www.youtube.com/verify_age?next_url=/&gl=US&hl=en' _AGE_URL = 'http://www.youtube.com/verify_age?next_url=/&gl=US&hl=en'
_NETRC_MACHINE = 'youtube' _NETRC_MACHINE = 'youtube'
# Listed in order of priority for the -b option # Listed in order of quality
_available_formats = ['38', '37', '22', '45', '35', '34', '43', '18', '6', '5', '17', '13', None] _available_formats = ['38', '37', '22', '45', '35', '34', '43', '18', '6', '5', '17', '13']
_video_extensions = { _video_extensions = {
'13': '3gp', '13': '3gp',
'17': 'mp4', '17': 'mp4',
@ -812,38 +812,8 @@ class YoutubeIE(InfoExtractor):
if mobj is None: if mobj is None:
self._downloader.trouble(u'ERROR: invalid URL: %s' % url) self._downloader.trouble(u'ERROR: invalid URL: %s' % url)
return return
# At this point we have a new video
if self._downloader is not None:
self._downloader.increment_downloads()
video_id = mobj.group(2) video_id = mobj.group(2)
# Downloader parameters
best_quality = False
all_formats = False
format_param = None
quality_index = 0
if self._downloader is not None:
params = self._downloader.params
format_param = params.get('format', None)
if format_param == '0':
format_limit = params.get('format_limit', None)
if format_limit is not None:
try:
# Start at a different format if the user has limited the maximum quality
quality_index = self._available_formats.index(format_limit)
except ValueError:
pass
format_param = self._available_formats[quality_index]
best_quality = True
elif format_param == '-1':
format_param = self._available_formats[quality_index]
all_formats = True
while True:
# Extension
video_extension = self._video_extensions.get(format_param, 'flv')
# Get video webpage # Get video webpage
self.report_video_webpage_download(video_id) self.report_video_webpage_download(video_id)
request = urllib2.Request('http://www.youtube.com/watch?v=%s&gl=US&hl=en' % video_id, None, std_headers) request = urllib2.Request('http://www.youtube.com/watch?v=%s&gl=US&hl=en' % video_id, None, std_headers)
@ -876,28 +846,6 @@ class YoutubeIE(InfoExtractor):
return return
self.report_information_extraction(video_id) self.report_information_extraction(video_id)
# "t" param
if 'token' not in video_info:
# Attempt to see if YouTube has issued an error message
if 'reason' not in video_info:
self._downloader.trouble(u'ERROR: unable to extract "t" parameter for unknown reason')
stream = open('reportme-ydl-%s.dat' % time.time(), 'wb')
stream.write(video_info_webpage)
stream.close()
else:
reason = urllib.unquote_plus(video_info['reason'][0])
self._downloader.trouble(u'ERROR: YouTube said: %s' % reason.decode('utf-8'))
return
token = urllib.unquote_plus(video_info['token'][0])
video_real_url = 'http://www.youtube.com/get_video?video_id=%s&t=%s&eurl=&el=detailpage&ps=default&gl=US&hl=en' % (video_id, token)
if format_param is not None:
video_real_url = '%s&fmt=%s' % (video_real_url, format_param)
# Check possible RTMP download
if 'conn' in video_info and video_info['conn'][0].startswith('rtmp'):
self.report_rtmp_download()
video_real_url = video_info['conn'][0]
# uploader # uploader
if 'author' not in video_info: if 'author' not in video_info:
self._downloader.trouble(u'ERROR: unable to extract uploader nickname') self._downloader.trouble(u'ERROR: unable to extract uploader nickname')
@ -930,6 +878,43 @@ class YoutubeIE(InfoExtractor):
if mobj is not None: if mobj is not None:
video_description = mobj.group(1) video_description = mobj.group(1)
# Decide which formats to download
if 'fmt_url_map' in video_info:
url_map = dict(tuple(pair.split('|')) for pair in video_info['fmt_url_map'][0].split(','))
format_limit = self._downloader.params.get('format_limit', None)
if format_limit is not None and format_limit in self._available_formats:
format_list = self._available_formats[self._available_formats.index(format_limit):]
else:
format_list = self._available_formats
existing_formats = [x for x in format_list if x in url_map]
if len(existing_formats) == 0:
self._downloader.trouble(u'ERROR: no known formats available for video')
return
requested_format = self._downloader.params.get('format', None)
if requested_format is None:
video_url_list = [(existing_formats[0], url_map[existing_formats[0]])] # Best quality
elif requested_format == '-1':
video_url_list = url_map.items() # All formats
else:
if requested_format not in existing_formats:
self._downloader.trouble(u'ERROR: format not available for video')
return
video_url_list = [(requested_format, url_map[requested_format])] # Specific format
elif 'conn' in video_info and video_info['conn'][0].startswith('rtmp'):
self.report_rtmp_download()
video_url_list = [(None, video_info['conn'][0])]
else:
self._downloader.trouble(u'ERROR: no fmt_url_map or conn information found in video info')
return
for format_param, video_real_url in video_url_list:
# At this point we have a new video
self._downloader.increment_downloads()
# Extension
video_extension = self._video_extensions.get(format_param, 'flv')
# Find the video URL in fmt_url_map or conn paramters
try: try:
# Process video information # Process video information
self._downloader.process_info({ self._downloader.process_info({
@ -944,32 +929,8 @@ class YoutubeIE(InfoExtractor):
'description': video_description.decode('utf-8'), 'description': video_description.decode('utf-8'),
'player_url': player_url, 'player_url': player_url,
}) })
except UnavailableVideoError, err:
if all_formats: self._downloader.trouble(u'ERROR: unable to download video')
quality_index += 1
if quality_index == len(self._available_formats):
# None left to get
return
else:
format_param = self._available_formats[quality_index]
continue
return
except UnavailableFormatError, err:
if best_quality or all_formats:
quality_index += 1
if quality_index == len(self._available_formats):
# I don't ever expect this to happen
if not all_formats:
self._downloader.trouble(u'ERROR: no known formats available for video')
return
else:
self.report_unavailable_format(video_id, format_param)
format_param = self._available_formats[quality_index]
continue
else:
self._downloader.trouble('ERROR: format not available for video')
return
class MetacafeIE(InfoExtractor): class MetacafeIE(InfoExtractor):