Restore INTERNAL version number

[youtube-dl.git] / youtube-dl

diff --git a/youtube-dl b/youtube-dl
index e20e59bf8c3fda8d320803c83794d5697cbb24f0..6730898ac757dc4d267944459dcb014d080a292a 100755 (executable)
--- a/youtube-dl
+++ b/youtube-dl
@@ -52,6 +52,29 @@ class PostProcessingError(Exception):
        """
        pass
 
        """
        pass
 

+class UnavailableFormatError(Exception):
+       """Unavailable Format exception.
+
+       This exception will be thrown when a video is requested
+       in a format that is not available for that video.
+       """
+       pass
+
+class ContentTooShortError(Exception):
+       """Content Too Short exception.
+
+       This exception may be raised by FileDownloader objects when a file they
+       download is too small for what the server announced first, indicating
+       the connection was probably interrupted.
+       """
+       # Both in bytes
+       downloaded = None
+       expected = None
+
+       def __init__(self, downloaded, expected):
+               self.downloaded = downloaded
+               self.expected = expected
+

 class FileDownloader(object):
        """File Downloader class.
 
 class FileDownloader(object):
        """File Downloader class.
 


@@ -91,6 +114,7 @@ class FileDownloader(object):
        ignoreerrors:   Do not stop on download errors.
        ratelimit:      Download speed limit, in bytes/sec.
        nooverwrites:   Prevent overwriting files.
        ignoreerrors:   Do not stop on download errors.
        ratelimit:      Download speed limit, in bytes/sec.
        nooverwrites:   Prevent overwriting files.

+       continuedl:     Try to continue downloads if possible.

        """
 
        params = None
        """
 
        params = None


@@ -159,13 +183,13 @@ class FileDownloader(object):
                new_min = max(bytes / 2.0, 1.0)
                new_max = min(max(bytes * 2.0, 1.0), 4194304) # Do not surpass 4 MB
                if elapsed_time < 0.001:
                new_min = max(bytes / 2.0, 1.0)
                new_max = min(max(bytes * 2.0, 1.0), 4194304) # Do not surpass 4 MB
                if elapsed_time < 0.001:

-                       return int(new_max)
+                       return long(new_max)

                rate = bytes / elapsed_time
                if rate > new_max:
                rate = bytes / elapsed_time
                if rate > new_max:

-                       return int(new_max)
+                       return long(new_max)

                if rate < new_min:
                if rate < new_min:

-                       return int(new_min)
-               return int(rate)
+                       return long(new_min)
+               return long(rate)

 
        @staticmethod
        def parse_bytes(bytestr):
 
        @staticmethod
        def parse_bytes(bytestr):


@@ -177,6 +201,14 @@ class FileDownloader(object):
                multiplier = 1024.0 ** 'bkmgtpezy'.index(matchobj.group(2).lower())
                return long(round(number * multiplier))
 
                multiplier = 1024.0 ** 'bkmgtpezy'.index(matchobj.group(2).lower())
                return long(round(number * multiplier))
 

+       @staticmethod
+       def verify_url(url):
+               """Verify a URL is valid and data could be downloaded."""
+               request = urllib2.Request(url, None, std_headers)
+               data = urllib2.urlopen(request)
+               data.read(1)
+               data.close()
+

        def add_info_extractor(self, ie):
                """Add an InfoExtractor object to the end of the list."""
                self._ies.append(ie)
        def add_info_extractor(self, ie):
                """Add an InfoExtractor object to the end of the list."""
                self._ies.append(ie)


@@ -235,6 +267,18 @@ class FileDownloader(object):
                """Report download progress."""
                self.to_stdout(u'\r[download] %s of %s at %s ETA %s' %
                                (percent_str, data_len_str, speed_str, eta_str), skip_eol=True)
                """Report download progress."""
                self.to_stdout(u'\r[download] %s of %s at %s ETA %s' %
                                (percent_str, data_len_str, speed_str, eta_str), skip_eol=True)

+
+       def report_resuming_byte(self, resume_len):
+               """Report attemtp to resume at given byte."""
+               self.to_stdout(u'[download] Resuming download at byte %s' % resume_len)
+       
+       def report_file_already_downloaded(self, file_name):
+               """Report file has already been fully downloaded."""
+               self.to_stdout(u'[download] %s has already been downloaded' % file_name)
+       
+       def report_unable_to_resume(self):
+               """Report it was impossible to resume download."""
+               self.to_stdout(u'[download] Unable to resume')

        
        def report_finish(self):
                """Report download finished."""
        
        def report_finish(self):
                """Report download finished."""


@@ -242,51 +286,64 @@ class FileDownloader(object):
 
        def process_info(self, info_dict):
                """Process a single dictionary returned by an InfoExtractor."""
 
        def process_info(self, info_dict):
                """Process a single dictionary returned by an InfoExtractor."""

-               # Forced printings
-               if self.params.get('forcetitle', False):
-                       print info_dict['title'].encode(locale.getpreferredencoding())
-               if self.params.get('forceurl', False):
-                       print info_dict['url'].encode(locale.getpreferredencoding())
-                       

                # Do nothing else if in simulate mode
                if self.params.get('simulate', False):
                # Do nothing else if in simulate mode
                if self.params.get('simulate', False):

-                       return
+                       try:
+                               self.verify_url(info_dict['url'])
+                       except (OSError, IOError, urllib2.URLError, httplib.HTTPException, socket.error), err:
+                               raise UnavailableFormatError

 
 

+                       # Forced printings
+                       if self.params.get('forcetitle', False):
+                               print info_dict['title'].encode(locale.getpreferredencoding())
+                       if self.params.get('forceurl', False):
+                               print info_dict['url'].encode(locale.getpreferredencoding())
+
+                       return
+                       

                try:
                try:

-                       filename = self.params['outtmpl'] % info_dict
+                       template_dict = dict(info_dict)
+                       template_dict['epoch'] = unicode(long(time.time()))
+                       filename = self.params['outtmpl'] % template_dict

                        self.report_destination(filename)
                except (ValueError, KeyError), err:
                        self.trouble('ERROR: invalid output template or system charset: %s' % str(err))
                if self.params['nooverwrites'] and os.path.exists(filename):
                        self.to_stderr('WARNING: file exists: %s; skipping' % filename)
                        return
                        self.report_destination(filename)
                except (ValueError, KeyError), err:
                        self.trouble('ERROR: invalid output template or system charset: %s' % str(err))
                if self.params['nooverwrites'] and os.path.exists(filename):
                        self.to_stderr('WARNING: file exists: %s; skipping' % filename)
                        return

+

                try:
                        self.pmkdir(filename)
                except (OSError, IOError), err:
                        self.trouble('ERROR: unable to create directories: %s' % str(err))
                        return
                try:
                        self.pmkdir(filename)
                except (OSError, IOError), err:
                        self.trouble('ERROR: unable to create directories: %s' % str(err))
                        return

+

                try:
                try:

-                       outstream = open(filename, 'wb')
+                       outstream = open(filename, 'ab')

                except (OSError, IOError), err:
                        self.trouble('ERROR: unable to open for writing: %s' % str(err))
                        return
                except (OSError, IOError), err:
                        self.trouble('ERROR: unable to open for writing: %s' % str(err))
                        return

+

                try:
                        self._do_download(outstream, info_dict['url'])
                        outstream.close()
                except (OSError, IOError), err:
                try:
                        self._do_download(outstream, info_dict['url'])
                        outstream.close()
                except (OSError, IOError), err:

-                       self.trouble('ERROR: unable to write video data: %s' % str(err))
-                       return
+                       outstream.close()
+                       os.remove(filename)
+                       raise UnavailableFormatError

                except (urllib2.URLError, httplib.HTTPException, socket.error), err:
                        self.trouble('ERROR: unable to download video data: %s' % str(err))
                        return
                except (urllib2.URLError, httplib.HTTPException, socket.error), err:
                        self.trouble('ERROR: unable to download video data: %s' % str(err))
                        return

+               except (ContentTooShortError, ), err:
+                       self.trouble('ERROR: content too short (expected %s bytes and served %s)' % (err.expected, err.downloaded))
+                       return
+

                try:
                        self.post_process(filename, info_dict)
                except (PostProcessingError), err:
                        self.trouble('ERROR: postprocessing: %s' % str(err))
                        return
 
                try:
                        self.post_process(filename, info_dict)
                except (PostProcessingError), err:
                        self.trouble('ERROR: postprocessing: %s' % str(err))
                        return
 

-               return
-

        def download(self, url_list):
                """Download a given list of URLs."""
                if len(url_list) > 1 and self.fixed_template():
        def download(self, url_list):
                """Download a given list of URLs."""
                if len(url_list) > 1 and self.fixed_template():


@@ -323,8 +380,32 @@ class FileDownloader(object):
                                break
        
        def _do_download(self, stream, url):
                                break
        
        def _do_download(self, stream, url):

+               basic_request = urllib2.Request(url, None, std_headers)

                request = urllib2.Request(url, None, std_headers)
                request = urllib2.Request(url, None, std_headers)

-               data = urllib2.urlopen(request)
+
+               # Resume transfer if filesize is non-zero
+               resume_len = stream.tell()
+               if self.params['continuedl'] and resume_len != 0:
+                       self.report_resuming_byte(resume_len)
+                       request.add_header('Range','bytes=%d-' % resume_len)
+               else:
+                       stream.close()
+                       stream = open(stream.name,'wb')
+               try:
+                       data = urllib2.urlopen(request)
+               except urllib2.HTTPError, e:
+                       if not e.code == 416: #  416 is 'Requested range not satisfiable'
+                               raise
+                       data = urllib2.urlopen(basic_request)
+                       content_length = data.info()['Content-Length']
+                       if content_length is not None and long(content_length) == resume_len:
+                               self.report_file_already_downloaded(stream.name)
+                               return
+                       else:
+                               self.report_unable_to_resume()
+                               stream.close()
+                               stream = open(stream.name,'wb')
+

                data_len = data.info().get('Content-length', None)
                data_len_str = self.format_bytes(data_len)
                byte_counter = 0
                data_len = data.info().get('Content-length', None)
                data_len_str = self.format_bytes(data_len)
                byte_counter = 0


@@ -353,7 +434,7 @@ class FileDownloader(object):
 
                self.report_finish()
                if data_len is not None and str(byte_counter) != data_len:
 
                self.report_finish()
                if data_len is not None and str(byte_counter) != data_len:

-                       raise ValueError('Content too short: %s/%s bytes' % (byte_counter, data_len))
+                       raise ContentTooShortError(byte_counter, long(data_len))

 
 class InfoExtractor(object):
        """Information Extractor class.
 
 class InfoExtractor(object):
        """Information Extractor class.


@@ -424,6 +505,13 @@ class YoutubeIE(InfoExtractor):
        _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'
        _NETRC_MACHINE = 'youtube'
        _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'
        _NETRC_MACHINE = 'youtube'

+       _available_formats = ['22', '35', '18', '17', '13'] # listed in order of priority for -b flag
+       _video_extensions = {
+               '13': '3gp',
+               '17': 'mp4',
+               '18': 'mp4',
+               '22': 'mp4',
+       }

 
        @staticmethod
        def suitable(url):
 
        @staticmethod
        def suitable(url):


@@ -476,6 +564,10 @@ class YoutubeIE(InfoExtractor):
                """Report extracted video URL."""
                self._downloader.to_stdout(u'[youtube] %s: URL: %s' % (video_id, video_real_url))
        
                """Report extracted video URL."""
                self._downloader.to_stdout(u'[youtube] %s: URL: %s' % (video_id, video_real_url))
        

+       def report_unavailable_format(self, video_id, format):
+               """Report extracted video URL."""
+               self._downloader.to_stdout(u'[youtube] %s: Format %s not available' % (video_id, format))
+       

        def _real_initialize(self):
                if self._downloader is None:
                        return
        def _real_initialize(self):
                if self._downloader is None:
                        return


@@ -554,70 +646,91 @@ class YoutubeIE(InfoExtractor):
                video_id = mobj.group(2)
 
                # Downloader parameters
                video_id = mobj.group(2)
 
                # Downloader parameters

+               best_quality = False

                format_param = None
                format_param = None

+               quality_index = 0

                if self._downloader is not None:
                        params = self._downloader.params
                        format_param = params.get('format', None)
                if self._downloader is not None:
                        params = self._downloader.params
                        format_param = params.get('format', None)

+                       if format_param == '0':
+                               format_param = self._available_formats[quality_index]
+                               best_quality = True

 
 

-               # Extension
-               video_extension = {
-                       '17': '3gp',
-                       '18': 'mp4',
-                       '22': 'mp4',
-               }.get(format_param, 'flv')
-
-               # Normalize URL, including format
-               normalized_url = 'http://www.youtube.com/watch?v=%s&gl=US&hl=en' % video_id
-               if format_param is not None:
-                       normalized_url = '%s&fmt=%s' % (normalized_url, format_param)
-               request = urllib2.Request(normalized_url, None, std_headers)
-               try:
-                       self.report_webpage_download(video_id)
-                       video_webpage = urllib2.urlopen(request).read()
-               except (urllib2.URLError, httplib.HTTPException, socket.error), err:
-                       self._downloader.trouble(u'ERROR: unable to download video webpage: %s' % str(err))
-                       return
-               self.report_information_extraction(video_id)
-               
-               # "t" param
-               mobj = re.search(r', "t": "([^"]+)"', video_webpage)
-               if mobj is None:
-                       self._downloader.trouble(u'ERROR: unable to extract "t" parameter')
-                       return
-               video_real_url = 'http://www.youtube.com/get_video?video_id=%s&t=%s&el=detailpage&ps=' % (video_id, mobj.group(1))
-               if format_param is not None:
-                       video_real_url = '%s&fmt=%s' % (video_real_url, format_param)
-               self.report_video_url(video_id, video_real_url)
+               while True:
+                       # Extension
+                       video_extension = self._video_extensions.get(format_param, 'flv')
+
+                       # Normalize URL, including format
+                       normalized_url = 'http://www.youtube.com/watch?v=%s&gl=US&hl=en' % video_id
+                       if format_param is not None:
+                               normalized_url = '%s&fmt=%s' % (normalized_url, format_param)
+                       request = urllib2.Request(normalized_url, None, std_headers)
+                       try:
+                               self.report_webpage_download(video_id)
+                               video_webpage = urllib2.urlopen(request).read()
+                       except (urllib2.URLError, httplib.HTTPException, socket.error), err:
+                               self._downloader.trouble(u'ERROR: unable to download video webpage: %s' % str(err))
+                               return
+                       self.report_information_extraction(video_id)
+                       
+                       # "t" param
+                       mobj = re.search(r', "t": "([^"]+)"', video_webpage)
+                       if mobj is None:
+                               self._downloader.trouble(u'ERROR: unable to extract "t" parameter')
+                               return
+                       video_real_url = 'http://www.youtube.com/get_video?video_id=%s&t=%s&el=detailpage&ps=' % (video_id, mobj.group(1))
+                       if format_param is not None:
+                               video_real_url = '%s&fmt=%s' % (video_real_url, format_param)
+                       self.report_video_url(video_id, video_real_url)
+
+                       # uploader
+                       mobj = re.search(r"var watchUsername = '([^']+)';", video_webpage)
+                       if mobj is None:
+                               self._downloader.trouble(u'ERROR: unable to extract uploader nickname')
+                               return
+                       video_uploader = mobj.group(1)

 
 

-               # uploader
-               mobj = re.search(r"var watchUsername = '([^']+)';", video_webpage)
-               if mobj is None:
-                       self._downloader.trouble(u'ERROR: unable to extract uploader nickname')
-                       return
-               video_uploader = mobj.group(1)
+                       # title
+                       mobj = re.search(r'(?im)<title>YouTube - ([^<]*)</title>', video_webpage)
+                       if mobj is None:
+                               self._downloader.trouble(u'ERROR: unable to extract video title')
+                               return
+                       video_title = mobj.group(1).decode('utf-8')
+                       video_title = re.sub(ur'(?u)&(.+?);', self.htmlentity_transform, video_title)
+                       video_title = video_title.replace(os.sep, u'%')
+
+                       # simplified title
+                       simple_title = re.sub(ur'(?u)([^%s]+)' % simple_title_chars, ur'_', video_title)
+                       simple_title = simple_title.strip(ur'_')
+
+                       try:
+                               # Process video information
+                               self._downloader.process_info({
+                                       'id':           video_id.decode('utf-8'),
+                                       'url':          video_real_url.decode('utf-8'),
+                                       'uploader':     video_uploader.decode('utf-8'),
+                                       'title':        video_title,
+                                       'stitle':       simple_title,
+                                       'ext':          video_extension.decode('utf-8'),
+                               })
+
+                               return
+
+                       except UnavailableFormatError, err:
+                               if best_quality:
+                                       if quality_index == len(self._available_formats) - 1:
+                                               # I don't ever expect this to happen
+                                               self._downloader.trouble(u'ERROR: no known formats available for video')
+                                               return
+                                       else:
+                                               self.report_unavailable_format(video_id, format_param)
+                                               quality_index += 1
+                                               format_param = self._available_formats[quality_index]
+                                               continue
+                               else: 
+                                       self._downloader.trouble('ERROR: format not available for video')
+                                       return

 
 

-               # title
-               mobj = re.search(r'(?im)<title>YouTube - ([^<]*)</title>', video_webpage)
-               if mobj is None:
-                       self._downloader.trouble(u'ERROR: unable to extract video title')
-                       return
-               video_title = mobj.group(1).decode('utf-8')
-               video_title = re.sub(ur'(?u)&(.+?);', self.htmlentity_transform, video_title)
-               video_title = video_title.replace(os.sep, u'%')
-
-               # simplified title
-               simple_title = re.sub(ur'(?u)([^%s]+)' % simple_title_chars, ur'_', video_title)
-               simple_title = simple_title.strip(ur'_')
-
-               # Process video information
-               self._downloader.process_info({
-                       'id':           video_id.decode('utf-8'),
-                       'url':          video_real_url.decode('utf-8'),
-                       'uploader':     video_uploader.decode('utf-8'),
-                       'title':        video_title,
-                       'stitle':       simple_title,
-                       'ext':          video_extension.decode('utf-8'),
-                       })

 
 class MetacafeIE(InfoExtractor):
        """Information Extractor for metacafe.com."""
 
 class MetacafeIE(InfoExtractor):
        """Information Extractor for metacafe.com."""


@@ -729,15 +842,18 @@ class MetacafeIE(InfoExtractor):
                        return
                video_uploader = mobj.group(1)
 
                        return
                video_uploader = mobj.group(1)
 

-               # Process video information
-               self._downloader.process_info({
-                       'id':           video_id.decode('utf-8'),
-                       'url':          video_url.decode('utf-8'),
-                       'uploader':     video_uploader.decode('utf-8'),
-                       'title':        video_title,
-                       'stitle':       simple_title,
-                       'ext':          video_extension.decode('utf-8'),
+               try:
+                       # Process video information
+                       self._downloader.process_info({
+                               'id':           video_id.decode('utf-8'),
+                               'url':          video_url.decode('utf-8'),
+                               'uploader':     video_uploader.decode('utf-8'),
+                               'title':        video_title,
+                               'stitle':       simple_title,
+                               'ext':          video_extension.decode('utf-8'),

                        })
                        })

+               except UnavailableFormatError:
+                       self._downloader.trouble(u'ERROR: format not available for video')

 
 
 class YoutubeSearchIE(InfoExtractor):
 
 
 class YoutubeSearchIE(InfoExtractor):


@@ -780,7 +896,7 @@ class YoutubeSearchIE(InfoExtractor):
                        return
                else:
                        try:
                        return
                else:
                        try:

-                               n = int(prefix)
+                               n = long(prefix)

                                if n <= 0:
                                        self._downloader.trouble(u'ERROR: invalid download number %s for query "%s"' % (n, query))
                                        return
                                if n <= 0:
                                        self._downloader.trouble(u'ERROR: invalid download number %s for query "%s"' % (n, query))
                                        return


@@ -789,7 +905,7 @@ class YoutubeSearchIE(InfoExtractor):
                                        n = self._max_youtube_results
                                self._download_n_results(query, n)
                                return
                                        n = self._max_youtube_results
                                self._download_n_results(query, n)
                                return

-                       except ValueError: # parsing prefix as int fails
+                       except ValueError: # parsing prefix as integer fails

                                self._download_n_results(query, 1)
                                return
 
                                self._download_n_results(query, 1)
                                return
 


@@ -919,7 +1035,7 @@ class PostProcessor(object):
                """Run the PostProcessor.
 
                The "information" argument is a dictionary like the ones
                """Run the PostProcessor.
 
                The "information" argument is a dictionary like the ones

-               returned by InfoExtractors. The only difference is that this
+               composed by InfoExtractors. The only difference is that this

                one has an extra field called "filepath" that points to the
                downloaded file.
 
                one has an extra field called "filepath" that points to the
                downloaded file.
 


@@ -949,48 +1065,66 @@ if __name__ == '__main__':
 
                # Parse command line
                parser = optparse.OptionParser(
 
                # Parse command line
                parser = optparse.OptionParser(

-                               usage='Usage: %prog [options] url...',
-                               version='INTERNAL',
-                               conflict_handler='resolve',
-                               )
+                       usage='Usage: %prog [options] url...',
+                       version='INTERNAL',
+                       conflict_handler='resolve',
+               )
+

                parser.add_option('-h', '--help',
                                action='help', help='print this help text and exit')
                parser.add_option('-v', '--version',
                                action='version', help='print program version and exit')
                parser.add_option('-h', '--help',
                                action='help', help='print this help text and exit')
                parser.add_option('-v', '--version',
                                action='version', help='print program version and exit')

-               parser.add_option('-u', '--username',
+               parser.add_option('-i', '--ignore-errors',
+                               action='store_true', dest='ignoreerrors', help='continue on download errors', default=False)
+               parser.add_option('-r', '--rate-limit',
+                               dest='ratelimit', metavar='L', help='download rate limit (e.g. 50k or 44.6m)')
+
+               authentication = optparse.OptionGroup(parser, 'Authentication Options')
+               authentication.add_option('-u', '--username',

                                dest='username', metavar='UN', help='account username')
                                dest='username', metavar='UN', help='account username')

-               parser.add_option('-p', '--password',
+               authentication.add_option('-p', '--password',

                                dest='password', metavar='PW', help='account password')
                                dest='password', metavar='PW', help='account password')

-               parser.add_option('-o', '--output',
-                               dest='outtmpl', metavar='TPL', help='output filename template')
-               parser.add_option('-q', '--quiet',
+               authentication.add_option('-n', '--netrc',
+                               action='store_true', dest='usenetrc', help='use .netrc authentication data', default=False)
+               parser.add_option_group(authentication)
+
+               video_format = optparse.OptionGroup(parser, 'Video Format Options')
+               video_format.add_option('-f', '--format',
+                               action='store', dest='format', metavar='FMT', help='video format code')
+               video_format.add_option('-b', '--best-quality',
+                               action='store_const', dest='format', help='download the best quality video possible', const='0')
+               video_format.add_option('-m', '--mobile-version',
+                               action='store_const', dest='format', help='alias for -f 17', const='17')
+               video_format.add_option('-d', '--high-def',
+                               action='store_const', dest='format', help='alias for -f 22', const='22')
+               parser.add_option_group(video_format)
+
+               verbosity = optparse.OptionGroup(parser, 'Verbosity / Simulation Options')
+               verbosity.add_option('-q', '--quiet',

                                action='store_true', dest='quiet', help='activates quiet mode', default=False)
                                action='store_true', dest='quiet', help='activates quiet mode', default=False)

-               parser.add_option('-s', '--simulate',
+               verbosity.add_option('-s', '--simulate',

                                action='store_true', dest='simulate', help='do not download video', default=False)
                                action='store_true', dest='simulate', help='do not download video', default=False)

-               parser.add_option('-t', '--title',
-                               action='store_true', dest='usetitle', help='use title in file name', default=False)
-               parser.add_option('-l', '--literal',
-                               action='store_true', dest='useliteral', help='use literal title in file name', default=False)
-               parser.add_option('-n', '--netrc',
-                               action='store_true', dest='usenetrc', help='use .netrc authentication data', default=False)
-               parser.add_option('-g', '--get-url',
+               verbosity.add_option('-g', '--get-url',

                                action='store_true', dest='geturl', help='simulate, quiet but print URL', default=False)
                                action='store_true', dest='geturl', help='simulate, quiet but print URL', default=False)

-               parser.add_option('-e', '--get-title',
+               verbosity.add_option('-e', '--get-title',

                                action='store_true', dest='gettitle', help='simulate, quiet but print title', default=False)
                                action='store_true', dest='gettitle', help='simulate, quiet but print title', default=False)

-               parser.add_option('-f', '--format',
-                               dest='format', metavar='FMT', help='video format code')
-               parser.add_option('-m', '--mobile-version',
-                               action='store_const', dest='format', help='alias for -f 17', const='17')
-               parser.add_option('-d', '--high-def',
-                               action='store_const', dest='format', help='alias for -f 22', const='22')
-               parser.add_option('-i', '--ignore-errors',
-                               action='store_true', dest='ignoreerrors', help='continue on download errors', default=False)
-               parser.add_option('-r', '--rate-limit',
-                               dest='ratelimit', metavar='L', help='download rate limit (e.g. 50k or 44.6m)')
-               parser.add_option('-a', '--batch-file',
+               parser.add_option_group(verbosity)
+
+               filesystem = optparse.OptionGroup(parser, 'Filesystem Options')
+               filesystem.add_option('-t', '--title',
+                               action='store_true', dest='usetitle', help='use title in file name', default=False)
+               filesystem.add_option('-l', '--literal',
+                               action='store_true', dest='useliteral', help='use literal title in file name', default=False)
+               filesystem.add_option('-o', '--output',
+                               dest='outtmpl', metavar='TPL', help='output filename template')
+               filesystem.add_option('-a', '--batch-file',

                                dest='batchfile', metavar='F', help='file containing URLs to download')
                                dest='batchfile', metavar='F', help='file containing URLs to download')

-               parser.add_option('-w', '--no-overwrites',
+               filesystem.add_option('-w', '--no-overwrites',

                                action='store_true', dest='nooverwrites', help='do not overwrite files', default=False)
                                action='store_true', dest='nooverwrites', help='do not overwrite files', default=False)

+               filesystem.add_option('-c', '--continue',
+                               action='store_true', dest='continue_dl', help='resume partially downloaded files', default=False)
+               parser.add_option_group(filesystem)
+

                (opts, args) = parser.parse_args()
 
                # Batch file verification
                (opts, args) = parser.parse_args()
 
                # Batch file verification


@@ -1006,21 +1140,21 @@ if __name__ == '__main__':
 
                # Conflicting, missing and erroneous options
                if len(all_urls) < 1:
 
                # Conflicting, missing and erroneous options
                if len(all_urls) < 1:

-                       sys.exit(u'ERROR: you must provide at least one URL')
+                       parser.error(u'you must provide at least one URL')

                if opts.usenetrc and (opts.username is not None or opts.password is not None):
                if opts.usenetrc and (opts.username is not None or opts.password is not None):

-                       sys.exit(u'ERROR: using .netrc conflicts with giving username/password')
+                       parser.error(u'using .netrc conflicts with giving username/password')

                if opts.password is not None and opts.username is None:
                if opts.password is not None and opts.username is None:

-                       sys.exit(u'ERROR: account username missing')
+                       parser.error(u'account username missing')

                if opts.outtmpl is not None and (opts.useliteral or opts.usetitle):
                if opts.outtmpl is not None and (opts.useliteral or opts.usetitle):

-                       sys.exit(u'ERROR: using output template conflicts with using title or literal title')
+                       parser.error(u'using output template conflicts with using title or literal title')

                if opts.usetitle and opts.useliteral:
                if opts.usetitle and opts.useliteral:

-                       sys.exit(u'ERROR: using title conflicts with using literal title')
+                       parser.error(u'using title conflicts with using literal title')

                if opts.username is not None and opts.password is None:
                        opts.password = getpass.getpass(u'Type account password and press return:')
                if opts.ratelimit is not None:
                        numeric_limit = FileDownloader.parse_bytes(opts.ratelimit)
                        if numeric_limit is None:
                if opts.username is not None and opts.password is None:
                        opts.password = getpass.getpass(u'Type account password and press return:')
                if opts.ratelimit is not None:
                        numeric_limit = FileDownloader.parse_bytes(opts.ratelimit)
                        if numeric_limit is None:

-                               sys.exit(u'ERROR: invalid rate limit specified')
+                               parser.error(u'invalid rate limit specified')

                        opts.ratelimit = numeric_limit
 
                # Information extractors
                        opts.ratelimit = numeric_limit
 
                # Information extractors


@@ -1046,6 +1180,7 @@ if __name__ == '__main__':
                        'ignoreerrors': opts.ignoreerrors,
                        'ratelimit': opts.ratelimit,
                        'nooverwrites': opts.nooverwrites,
                        'ignoreerrors': opts.ignoreerrors,
                        'ratelimit': opts.ratelimit,
                        'nooverwrites': opts.nooverwrites,

+                       'continuedl': opts.continue_dl,

                        })
                fd.add_info_extractor(youtube_search_ie)
                fd.add_info_extractor(youtube_pl_ie)
                        })
                fd.add_info_extractor(youtube_search_ie)
                fd.add_info_extractor(youtube_pl_ie)