Merge remote-tracking branch 'rupertbaxter2/master'
[ytdl] / youtube_dl / YoutubeDL.py
index 14a1d06ab1ed3350547822cac71501745a14842a..8f34b17b4135ff26263e52fc8e9e0badc197680d 100755 (executable)
@@ -7,8 +7,10 @@ import collections
 import datetime
 import errno
 import io
+import itertools
 import json
 import locale
+import operator
 import os
 import platform
 import re
@@ -22,12 +24,17 @@ import traceback
 if os.name == 'nt':
     import ctypes
 
-from .utils import (
+from .compat import (
     compat_cookiejar,
+    compat_expanduser,
     compat_http_client,
+    compat_kwargs,
     compat_str,
     compat_urllib_error,
     compat_urllib_request,
+)
+from .utils import (
+    escape_url,
     ContentTooShortError,
     date_from_str,
     DateRange,
@@ -43,6 +50,7 @@ from .utils import (
     make_HTTPS_handler,
     MaxDownloadsReached,
     PagedList,
+    parse_filesize,
     PostProcessingError,
     platform_name,
     preferredencoding,
@@ -52,14 +60,24 @@ from .utils import (
     takewhile_inclusive,
     UnavailableVideoError,
     url_basename,
+    version_tuple,
     write_json_file,
     write_string,
     YoutubeDLHandler,
     prepend_extension,
+    args_to_str,
+    age_restricted,
 )
+from .cache import Cache
 from .extractor import get_info_extractor, gen_extractors
 from .downloader import get_suitable_downloader
-from .postprocessor import FFmpegMergerPP
+from .downloader.rtmp import rtmpdump_version
+from .postprocessor import (
+    FFmpegFixupStretchedPP,
+    FFmpegMergerPP,
+    FFmpegPostProcessor,
+    get_postprocessor,
+)
 from .version import __version__
 
 
@@ -105,8 +123,10 @@ class YoutubeDL(object):
     forcefilename:     Force printing final filename.
     forceduration:     Force printing duration.
     forcejson:         Force printing info_dict as JSON.
+    dump_single_json:  Force printing the info_dict of the whole playlist
+                       (or video) as a single JSON line.
     simulate:          Do not download the video files.
-    format:            Video format code.
+    format:            Video format code. See options.py for more information.
     format_limit:      Highest quality format to try.
     outtmpl:           Template for output names.
     restrictfilenames: Do not allow "&" and spaces in file names
@@ -114,6 +134,7 @@ class YoutubeDL(object):
     nooverwrites:      Prevent overwriting files.
     playliststart:     Playlist item to start at.
     playlistend:       Playlist item to end at.
+    playlistreverse:   Download playlist items in reverse order.
     matchtitle:        Download only matching titles.
     rejecttitle:       Reject downloads for matching titles.
     logger:            Log messages to a logging.Logger instance.
@@ -133,7 +154,7 @@ class YoutubeDL(object):
     daterange:         A DateRange object, download only if the upload_date is in the range.
     skip_download:     Skip the actual download of the video file
     cachedir:          Location of the cache files in the filesystem.
-                       None to disable filesystem cache.
+                       False to disable filesystem cache.
     noplaylist:        Download single video instead of a playlist if in doubt.
     age_limit:         An integer representing the user's age in years.
                        Unsuitable videos for the given age are skipped.
@@ -162,6 +183,42 @@ class YoutubeDL(object):
     default_search:    Prepend this string if an input url is not valid.
                        'auto' for elaborate guessing
     encoding:          Use this encoding instead of the system-specified.
+    extract_flat:      Do not resolve URLs, return the immediate result.
+                       Pass in 'in_playlist' to only show this behavior for
+                       playlist items.
+    postprocessors:    A list of dictionaries, each with an entry
+                       * key:  The name of the postprocessor. See
+                               youtube_dl/postprocessor/__init__.py for a list.
+                       as well as any further keyword arguments for the
+                       postprocessor.
+    progress_hooks:    A list of functions that get called on download
+                       progress, with a dictionary with the entries
+                       * filename: The final filename
+                       * status: One of "downloading" and "finished"
+
+                       The dict may also have some of the following entries:
+
+                       * downloaded_bytes: Bytes on disk
+                       * total_bytes: Size of the whole file, None if unknown
+                       * tmpfilename: The filename we're currently writing to
+                       * eta: The estimated time in seconds, None if unknown
+                       * speed: The download speed in bytes/second, None if
+                                unknown
+
+                       Progress hooks are guaranteed to be called at least once
+                       (with status "finished") if the download is successful.
+    merge_output_format: Extension to use when merging formats.
+    fixup:             Automatically correct known faults of the file.
+                       One of:
+                       - "never": do nothing
+                       - "warn": only emit a warning
+                       - "detect_or_warn": check whether we can do anything
+                                           about it, warn otherwise
+    source_address:    (Experimental) Client-side IP address to bind to.
+    call_home:         Boolean, true iff we are allowed to contact the
+                       youtube-dl servers for debugging.
+    sleep_interval:    Number of seconds to sleep before each download.
+
 
     The following parameters are not used by YoutubeDL itself, they are used by
     the FileDownloader:
@@ -171,6 +228,7 @@ class YoutubeDL(object):
     The following options are used by the post processors:
     prefer_ffmpeg:     If True, use ffmpeg instead of avconv if both are available,
                        otherwise prefer avconv.
+    exec_cmd:          Arbitrary command to run after downloading
     """
 
     params = None
@@ -180,7 +238,7 @@ class YoutubeDL(object):
     _num_downloads = None
     _screen_file = None
 
-    def __init__(self, params=None):
+    def __init__(self, params=None, auto_init=True):
         """Create a FileDownloader object with the given options."""
         if params is None:
             params = {}
@@ -193,6 +251,7 @@ class YoutubeDL(object):
         self._screen_file = [sys.stdout, sys.stderr][params.get('logtostderr', False)]
         self._err_file = sys.stderr
         self.params = params
+        self.cache = Cache(self)
 
         if params.get('bidi_workaround', False):
             try:
@@ -223,11 +282,11 @@ class YoutubeDL(object):
 
         if (sys.version_info >= (3,) and sys.platform != 'win32' and
                 sys.getfilesystemencoding() in ['ascii', 'ANSI_X3.4-1968']
-                and not params['restrictfilenames']):
+                and not params.get('restrictfilenames', False)):
             # On Python 3, the Unicode filesystem API will throw errors (#1474)
             self.report_warning(
                 'Assuming --restrict-filenames since file system encoding '
-                'cannot encode all charactes. '
+                'cannot encode all characters. '
                 'Set the LC_ALL environment variable to fix this.')
             self.params['restrictfilenames'] = True
 
@@ -236,6 +295,36 @@ class YoutubeDL(object):
 
         self._setup_opener()
 
+        if auto_init:
+            self.print_debug_header()
+            self.add_default_info_extractors()
+
+        for pp_def_raw in self.params.get('postprocessors', []):
+            pp_class = get_postprocessor(pp_def_raw['key'])
+            pp_def = dict(pp_def_raw)
+            del pp_def['key']
+            pp = pp_class(self, **compat_kwargs(pp_def))
+            self.add_post_processor(pp)
+
+        for ph in self.params.get('progress_hooks', []):
+            self.add_progress_hook(ph)
+
+    def warn_if_short_id(self, argv):
+        # short YouTube ID starting with dash?
+        idxs = [
+            i for i, a in enumerate(argv)
+            if re.match(r'^-[0-9A-Za-z_-]{10}$', a)]
+        if idxs:
+            correct_argv = (
+                ['youtube-dl'] +
+                [a for i, a in enumerate(argv) if i not in idxs] +
+                ['--'] + [argv[i] for i in idxs]
+            )
+            self.report_warning(
+                'Long argument string detected. '
+                'Use -- to separate parameters and URLs, like this:\n%s\n' %
+                args_to_str(correct_argv))
+
     def add_info_extractor(self, ie):
         """Add an InfoExtractor object to the end of the list."""
         self._ies.append(ie)
@@ -280,7 +369,7 @@ class YoutubeDL(object):
         self._output_process.stdin.write((message + '\n').encode('utf-8'))
         self._output_process.stdin.flush()
         res = ''.join(self._output_channel.readline().decode('utf-8')
-                       for _ in range(line_count))
+                      for _ in range(line_count))
         return res[:-len('\n')]
 
     def to_screen(self, message, skip_eol=False):
@@ -423,7 +512,7 @@ class YoutubeDL(object):
             autonumber_templ = '%0' + str(autonumber_size) + 'd'
             template_dict['autonumber'] = autonumber_templ % self._num_downloads
             if template_dict.get('playlist_index') is not None:
-                template_dict['playlist_index'] = '%05d' % template_dict['playlist_index']
+                template_dict['playlist_index'] = '%0*d' % (len(str(template_dict['n_entries'])), template_dict['playlist_index'])
             if template_dict.get('resolution') is None:
                 if template_dict.get('width') and template_dict.get('height'):
                     template_dict['resolution'] = '%dx%d' % (template_dict['width'], template_dict['height'])
@@ -442,7 +531,7 @@ class YoutubeDL(object):
             template_dict = collections.defaultdict(lambda: 'NA', template_dict)
 
             outtmpl = self.params.get('outtmpl', DEFAULT_OUTTMPL)
-            tmpl = os.path.expanduser(outtmpl)
+            tmpl = compat_expanduser(outtmpl)
             filename = tmpl % template_dict
             return filename
         except ValueError as err:
@@ -477,10 +566,8 @@ class YoutubeDL(object):
             max_views = self.params.get('max_views')
             if max_views is not None and view_count > max_views:
                 return 'Skipping %s, because it has exceeded the maximum view count (%d/%d)' % (video_title, view_count, max_views)
-        age_limit = self.params.get('age_limit')
-        if age_limit is not None:
-            if age_limit < info_dict.get('age_limit', 0):
-                return 'Skipping "' + title + '" because it is age restricted'
+        if age_restricted(info_dict.get('age_limit'), self.params.get('age_limit')):
+            return 'Skipping "%s" because it is age restricted' % title
         if self.in_download_archive(info_dict):
             return '%s has already been recorded in archive' % video_title
         return None
@@ -514,7 +601,7 @@ class YoutubeDL(object):
 
             try:
                 ie_result = ie.extract(url)
-                if ie_result is None: # Finished already (backwards compatibility; listformats and friends should be moved here)
+                if ie_result is None:  # Finished already (backwards compatibility; listformats and friends should be moved here)
                     break
                 if isinstance(ie_result, list):
                     # Backwards compatibility: old IE result format
@@ -527,7 +614,7 @@ class YoutubeDL(object):
                     return self.process_ie_result(ie_result, download, extra_info)
                 else:
                     return ie_result
-            except ExtractorError as de: # An error we somewhat expected
+            except ExtractorError as de:  # An error we somewhat expected
                 self.report_error(compat_str(de), de.format_traceback())
                 break
             except MaxDownloadsReached:
@@ -558,7 +645,16 @@ class YoutubeDL(object):
         Returns the resolved ie_result.
         """
 
-        result_type = ie_result.get('_type', 'video') # If not given we suppose it's a video, support the default old system
+        result_type = ie_result.get('_type', 'video')
+
+        if result_type in ('url', 'url_transparent'):
+            extract_flat = self.params.get('extract_flat', False)
+            if ((extract_flat == 'in_playlist' and 'playlist' in extra_info) or
+                    extract_flat is True):
+                if self.params.get('forcejson', False):
+                    self.to_stdout(json.dumps(ie_result))
+                return ie_result
+
         if result_type == 'video':
             self.add_extra_info(ie_result, extra_info)
             return self.process_video_result(ie_result, download=download)
@@ -575,27 +671,19 @@ class YoutubeDL(object):
                 ie_result['url'], ie_key=ie_result.get('ie_key'),
                 extra_info=extra_info, download=False, process=False)
 
-            def make_result(embedded_info):
-                new_result = ie_result.copy()
-                for f in ('_type', 'url', 'ext', 'player_url', 'formats',
-                          'entries', 'ie_key', 'duration',
-                          'subtitles', 'annotations', 'format',
-                          'thumbnail', 'thumbnails'):
-                    if f in new_result:
-                        del new_result[f]
-                    if f in embedded_info:
-                        new_result[f] = embedded_info[f]
-                return new_result
-            new_result = make_result(info)
+            force_properties = dict(
+                (k, v) for k, v in ie_result.items() if v is not None)
+            for f in ('_type', 'url'):
+                if f in force_properties:
+                    del force_properties[f]
+            new_result = info.copy()
+            new_result.update(force_properties)
 
             assert new_result.get('_type') != 'url_transparent'
-            if new_result.get('_type') == 'compat_list':
-                new_result['entries'] = [
-                    make_result(e) for e in new_result['entries']]
 
             return self.process_ie_result(
                 new_result, download=download, extra_info=extra_info)
-        elif result_type == 'playlist':
+        elif result_type == 'playlist' or result_type == 'multi_video':
             # We process each entry in the playlist
             playlist = ie_result.get('title', None) or ie_result.get('id', None)
             self.to_screen('[download] Downloading playlist: %s' % playlist)
@@ -608,26 +696,39 @@ class YoutubeDL(object):
             if playlistend == -1:
                 playlistend = None
 
-            if isinstance(ie_result['entries'], list):
-                n_all_entries = len(ie_result['entries'])
-                entries = ie_result['entries'][playliststart:playlistend]
+            ie_entries = ie_result['entries']
+            if isinstance(ie_entries, list):
+                n_all_entries = len(ie_entries)
+                entries = ie_entries[playliststart:playlistend]
                 n_entries = len(entries)
                 self.to_screen(
                     "[%s] playlist %s: Collected %d video ids (downloading %d of them)" %
                     (ie_result['extractor'], playlist, n_all_entries, n_entries))
-            else:
-                assert isinstance(ie_result['entries'], PagedList)
-                entries = ie_result['entries'].getslice(
+            elif isinstance(ie_entries, PagedList):
+                entries = ie_entries.getslice(
                     playliststart, playlistend)
                 n_entries = len(entries)
                 self.to_screen(
                     "[%s] playlist %s: Downloading %d videos" %
                     (ie_result['extractor'], playlist, n_entries))
+            else:  # iterable
+                entries = list(itertools.islice(
+                    ie_entries, playliststart, playlistend))
+                n_entries = len(entries)
+                self.to_screen(
+                    "[%s] playlist %s: Downloading %d videos" %
+                    (ie_result['extractor'], playlist, n_entries))
+
+            if self.params.get('playlistreverse', False):
+                entries = entries[::-1]
 
             for i, entry in enumerate(entries, 1):
-                self.to_screen('[download] Downloading video #%s of %s' % (i, n_entries))
+                self.to_screen('[download] Downloading video %s of %s' % (i, n_entries))
                 extra = {
+                    'n_entries': n_entries,
                     'playlist': playlist,
+                    'playlist_id': ie_result.get('id'),
+                    'playlist_title': ie_result.get('title'),
                     'playlist_index': i + playliststart,
                     'extractor': ie_result['extractor'],
                     'webpage_url': ie_result['webpage_url'],
@@ -647,14 +748,20 @@ class YoutubeDL(object):
             ie_result['entries'] = playlist_results
             return ie_result
         elif result_type == 'compat_list':
+            self.report_warning(
+                'Extractor %s returned a compat_list result. '
+                'It needs to be updated.' % ie_result.get('extractor'))
+
             def _fixup(r):
-                self.add_extra_info(r,
+                self.add_extra_info(
+                    r,
                     {
                         'extractor': ie_result['extractor'],
                         'webpage_url': ie_result['webpage_url'],
                         'webpage_url_basename': url_basename(ie_result['webpage_url']),
                         'extractor_key': ie_result['extractor_key'],
-                    })
+                    }
+                )
                 return r
             ie_result['entries'] = [
                 self.process_ie_result(_fixup(r), download, extra_info)
@@ -664,7 +771,59 @@ class YoutubeDL(object):
         else:
             raise Exception('Invalid result type: %s' % result_type)
 
+    def _apply_format_filter(self, format_spec, available_formats):
+        " Returns a tuple of the remaining format_spec and filtered formats "
+
+        OPERATORS = {
+            '<': operator.lt,
+            '<=': operator.le,
+            '>': operator.gt,
+            '>=': operator.ge,
+            '=': operator.eq,
+            '!=': operator.ne,
+        }
+        operator_rex = re.compile(r'''(?x)\s*\[
+            (?P<key>width|height|tbr|abr|vbr|filesize)
+            \s*(?P<op>%s)(?P<none_inclusive>\s*\?)?\s*
+            (?P<value>[0-9.]+(?:[kKmMgGtTpPeEzZyY]i?[Bb]?)?)
+            \]$
+            ''' % '|'.join(map(re.escape, OPERATORS.keys())))
+        m = operator_rex.search(format_spec)
+        if not m:
+            raise ValueError('Invalid format specification %r' % format_spec)
+
+        try:
+            comparison_value = int(m.group('value'))
+        except ValueError:
+            comparison_value = parse_filesize(m.group('value'))
+            if comparison_value is None:
+                comparison_value = parse_filesize(m.group('value') + 'B')
+            if comparison_value is None:
+                raise ValueError(
+                    'Invalid value %r in format specification %r' % (
+                        m.group('value'), format_spec))
+        op = OPERATORS[m.group('op')]
+
+        def _filter(f):
+            actual_value = f.get(m.group('key'))
+            if actual_value is None:
+                return m.group('none_inclusive')
+            return op(actual_value, comparison_value)
+        new_formats = [f for f in available_formats if _filter(f)]
+
+        new_format_spec = format_spec[:-len(m.group(0))]
+        if not new_format_spec:
+            new_format_spec = 'best'
+
+        return (new_format_spec, new_formats)
+
     def select_format(self, format_spec, available_formats):
+        while format_spec.endswith(']'):
+            format_spec, available_formats = self._apply_format_filter(
+                format_spec, available_formats)
+        if not available_formats:
+            return None
+
         if format_spec == 'best' or format_spec is None:
             return available_formats[-1]
         elif format_spec == 'worst':
@@ -694,7 +853,7 @@ class YoutubeDL(object):
             if video_formats:
                 return video_formats[0]
         else:
-            extensions = ['mp4', 'flv', 'webm', '3gp']
+            extensions = ['mp4', 'flv', 'webm', '3gp', 'm4a', 'mp3', 'ogg', 'aac', 'wav']
             if format_spec in extensions:
                 filter_f = lambda f: f['ext'] == format_spec
             else:
@@ -732,6 +891,10 @@ class YoutubeDL(object):
             info_dict['display_id'] = info_dict['id']
 
         if info_dict.get('upload_date') is None and info_dict.get('timestamp') is not None:
+            # Working around negative timestamps in Windows
+            # (see http://bugs.python.org/issue1646728)
+            if info_dict['timestamp'] < 0 and os.name == 'nt':
+                info_dict['timestamp'] = 0
             upload_date = datetime.datetime.utcfromtimestamp(
                 info_dict['timestamp'])
             info_dict['upload_date'] = upload_date.strftime('%Y%m%d')
@@ -795,28 +958,50 @@ class YoutubeDL(object):
         if req_format in ('-1', 'all'):
             formats_to_download = formats
         else:
-            # We can accept formats requested in the format: 34/5/best, we pick
-            # the first that is available, starting from left
-            req_formats = req_format.split('/')
-            for rf in req_formats:
-                if re.match(r'.+?\+.+?', rf) is not None:
-                    # Two formats have been requested like '137+139'
-                    format_1, format_2 = rf.split('+')
-                    formats_info = (self.select_format(format_1, formats),
-                        self.select_format(format_2, formats))
-                    if all(formats_info):
-                        selected_format = {
-                            'requested_formats': formats_info,
-                            'format': rf,
-                            'ext': formats_info[0]['ext'],
-                        }
+            for rfstr in req_format.split(','):
+                # We can accept formats requested in the format: 34/5/best, we pick
+                # the first that is available, starting from left
+                req_formats = rfstr.split('/')
+                for rf in req_formats:
+                    if re.match(r'.+?\+.+?', rf) is not None:
+                        # Two formats have been requested like '137+139'
+                        format_1, format_2 = rf.split('+')
+                        formats_info = (self.select_format(format_1, formats),
+                                        self.select_format(format_2, formats))
+                        if all(formats_info):
+                            # The first format must contain the video and the
+                            # second the audio
+                            if formats_info[0].get('vcodec') == 'none':
+                                self.report_error('The first format must '
+                                                  'contain the video, try using '
+                                                  '"-f %s+%s"' % (format_2, format_1))
+                                return
+                            output_ext = (
+                                formats_info[0]['ext']
+                                if self.params.get('merge_output_format') is None
+                                else self.params['merge_output_format'])
+                            selected_format = {
+                                'requested_formats': formats_info,
+                                'format': rf,
+                                'ext': formats_info[0]['ext'],
+                                'width': formats_info[0].get('width'),
+                                'height': formats_info[0].get('height'),
+                                'resolution': formats_info[0].get('resolution'),
+                                'fps': formats_info[0].get('fps'),
+                                'vcodec': formats_info[0].get('vcodec'),
+                                'vbr': formats_info[0].get('vbr'),
+                                'stretched_ratio': formats_info[0].get('stretched_ratio'),
+                                'acodec': formats_info[1].get('acodec'),
+                                'abr': formats_info[1].get('abr'),
+                                'ext': output_ext,
+                            }
+                        else:
+                            selected_format = None
                     else:
-                        selected_format = None
-                else:
-                    selected_format = self.select_format(rf, formats)
-                if selected_format is not None:
-                    formats_to_download = [selected_format]
-                    break
+                        selected_format = self.select_format(rf, formats)
+                    if selected_format is not None:
+                        formats_to_download.append(selected_format)
+                        break
         if not formats_to_download:
             raise ExtractorError('requested format not available',
                                  expected=True)
@@ -867,8 +1052,12 @@ class YoutubeDL(object):
         if self.params.get('forceid', False):
             self.to_stdout(info_dict['id'])
         if self.params.get('forceurl', False):
-            # For RTMP URLs, also include the playpath
-            self.to_stdout(info_dict['url'] + info_dict.get('play_path', ''))
+            if info_dict.get('requested_formats') is not None:
+                for f in info_dict['requested_formats']:
+                    self.to_stdout(f['url'] + f.get('play_path', ''))
+            else:
+                # For RTMP URLs, also include the playpath
+                self.to_stdout(info_dict['url'] + info_dict.get('play_path', ''))
         if self.params.get('forcethumbnail', False) and info_dict.get('thumbnail') is not None:
             self.to_stdout(info_dict['thumbnail'])
         if self.params.get('forcedescription', False) and info_dict.get('description') is not None:
@@ -882,6 +1071,8 @@ class YoutubeDL(object):
         if self.params.get('forcejson', False):
             info_dict['_filename'] = filename
             self.to_stdout(json.dumps(info_dict))
+        if self.params.get('dump_single_json', False):
+            info_dict['_filename'] = filename
 
         # Do nothing else if in simulate mode
         if self.params.get('simulate', False):
@@ -902,13 +1093,13 @@ class YoutubeDL(object):
             descfn = filename + '.description'
             if self.params.get('nooverwrites', False) and os.path.exists(encodeFilename(descfn)):
                 self.to_screen('[info] Video description is already present')
+            elif info_dict.get('description') is None:
+                self.report_warning('There\'s no description to write.')
             else:
                 try:
                     self.to_screen('[info] Writing video description to: ' + descfn)
                     with io.open(encodeFilename(descfn), 'w', encoding='utf-8') as descfile:
                         descfile.write(info_dict['description'])
-                except (KeyError, TypeError):
-                    self.report_warning('There\'s no description to write.')
                 except (OSError, IOError):
                     self.report_error('Cannot write description file ' + descfn)
                     return
@@ -947,7 +1138,7 @@ class YoutubeDL(object):
                     else:
                         self.to_screen('[info] Writing video subtitles to: ' + sub_filename)
                         with io.open(encodeFilename(sub_filename), 'w', encoding='utf-8') as subfile:
-                                subfile.write(sub)
+                            subfile.write(sub)
                 except (OSError, IOError):
                     self.report_error('Cannot write subtitles file ' + sub_filename)
                     return
@@ -959,7 +1150,7 @@ class YoutubeDL(object):
             else:
                 self.to_screen('[info] Writing video description metadata as JSON to: ' + infofn)
                 try:
-                    write_json_file(info_dict, encodeFilename(infofn))
+                    write_json_file(info_dict, infofn)
                 except (OSError, IOError):
                     self.report_error('Cannot write metadata to JSON file ' + infofn)
                     return
@@ -979,64 +1170,81 @@ class YoutubeDL(object):
                         with open(thumb_filename, 'wb') as thumbf:
                             shutil.copyfileobj(uf, thumbf)
                         self.to_screen('[%s] %s: Writing thumbnail to: %s' %
-                            (info_dict['extractor'], info_dict['id'], thumb_filename))
+                                       (info_dict['extractor'], info_dict['id'], thumb_filename))
                     except (compat_urllib_error.URLError, compat_http_client.HTTPException, socket.error) as err:
                         self.report_warning('Unable to download thumbnail "%s": %s' %
-                            (info_dict['thumbnail'], compat_str(err)))
+                                            (info_dict['thumbnail'], compat_str(err)))
 
         if not self.params.get('skip_download', False):
-            if self.params.get('nooverwrites', False) and os.path.exists(encodeFilename(filename)):
-                success = True
-            else:
-                try:
-                    def dl(name, info):
-                        fd = get_suitable_downloader(info)(self, self.params)
-                        for ph in self._progress_hooks:
-                            fd.add_progress_hook(ph)
-                        if self.params.get('verbose'):
-                            self.to_stdout('[debug] Invoking downloader on %r' % info.get('url'))
-                        return fd.download(name, info)
-                    if info_dict.get('requested_formats') is not None:
-                        downloaded = []
-                        success = True
-                        merger = FFmpegMergerPP(self, not self.params.get('keepvideo'))
-                        if not merger._get_executable():
-                            postprocessors = []
-                            self.report_warning('You have requested multiple '
-                                'formats but ffmpeg or avconv are not installed.'
-                                ' The formats won\'t be merged')
-                        else:
-                            postprocessors = [merger]
-                        for f in info_dict['requested_formats']:
-                            new_info = dict(info_dict)
-                            new_info.update(f)
-                            fname = self.prepare_filename(new_info)
-                            fname = prepend_extension(fname, 'f%s' % f['format_id'])
-                            downloaded.append(fname)
-                            partial_success = dl(fname, new_info)
-                            success = success and partial_success
-                        info_dict['__postprocessors'] = postprocessors
-                        info_dict['__files_to_merge'] = downloaded
+            try:
+                def dl(name, info):
+                    fd = get_suitable_downloader(info)(self, self.params)
+                    for ph in self._progress_hooks:
+                        fd.add_progress_hook(ph)
+                    if self.params.get('verbose'):
+                        self.to_stdout('[debug] Invoking downloader on %r' % info.get('url'))
+                    return fd.download(name, info)
+                if info_dict.get('requested_formats') is not None:
+                    downloaded = []
+                    success = True
+                    merger = FFmpegMergerPP(self, not self.params.get('keepvideo'))
+                    if not merger._executable:
+                        postprocessors = []
+                        self.report_warning('You have requested multiple '
+                                            'formats but ffmpeg or avconv are not installed.'
+                                            ' The formats won\'t be merged')
                     else:
-                        # Just a single file
-                        success = dl(filename, info_dict)
-                except (compat_urllib_error.URLError, compat_http_client.HTTPException, socket.error) as err:
-                    self.report_error('unable to download video data: %s' % str(err))
-                    return
-                except (OSError, IOError) as err:
-                    raise UnavailableVideoError(err)
-                except (ContentTooShortError, ) as err:
-                    self.report_error('content too short (expected %s bytes and served %s)' % (err.expected, err.downloaded))
-                    return
+                        postprocessors = [merger]
+                    for f in info_dict['requested_formats']:
+                        new_info = dict(info_dict)
+                        new_info.update(f)
+                        fname = self.prepare_filename(new_info)
+                        fname = prepend_extension(fname, 'f%s' % f['format_id'])
+                        downloaded.append(fname)
+                        partial_success = dl(fname, new_info)
+                        success = success and partial_success
+                    info_dict['__postprocessors'] = postprocessors
+                    info_dict['__files_to_merge'] = downloaded
+                else:
+                    # Just a single file
+                    success = dl(filename, info_dict)
+            except (compat_urllib_error.URLError, compat_http_client.HTTPException, socket.error) as err:
+                self.report_error('unable to download video data: %s' % str(err))
+                return
+            except (OSError, IOError) as err:
+                raise UnavailableVideoError(err)
+            except (ContentTooShortError, ) as err:
+                self.report_error('content too short (expected %s bytes and served %s)' % (err.expected, err.downloaded))
+                return
 
             if success:
+                # Fixup content
+                stretched_ratio = info_dict.get('stretched_ratio')
+                if stretched_ratio is not None and stretched_ratio != 1:
+                    fixup_policy = self.params.get('fixup')
+                    if fixup_policy is None:
+                        fixup_policy = 'detect_or_warn'
+                    if fixup_policy == 'warn':
+                        self.report_warning('%s: Non-uniform pixel ratio (%s)' % (
+                            info_dict['id'], stretched_ratio))
+                    elif fixup_policy == 'detect_or_warn':
+                        stretched_pp = FFmpegFixupStretchedPP(self)
+                        if stretched_pp.available:
+                            info_dict.setdefault('__postprocessors', [])
+                            info_dict['__postprocessors'].append(stretched_pp)
+                        else:
+                            self.report_warning(
+                                '%s: Non-uniform pixel ratio (%s). Install ffmpeg or avconv to fix this automatically.' % (
+                                    info_dict['id'], stretched_ratio))
+                    else:
+                        assert fixup_policy == 'ignore'
+
                 try:
                     self.post_process(filename, info_dict)
                 except (PostProcessingError) as err:
                     self.report_error('postprocessing: %s' % str(err))
                     return
-
-        self.record_download_archive(info_dict)
+                self.record_download_archive(info_dict)
 
     def download(self, url_list):
         """Download a given list of URLs."""
@@ -1048,13 +1256,16 @@ class YoutubeDL(object):
 
         for url in url_list:
             try:
-                #It also downloads the videos
-                self.extract_info(url)
+                # It also downloads the videos
+                res = self.extract_info(url)
             except UnavailableVideoError:
                 self.report_error('unable to download video')
             except MaxDownloadsReached:
                 self.to_screen('[info] Maximum number of downloaded files reached.')
                 raise
+            else:
+                if self.params.get('dump_single_json', False):
+                    self.to_stdout(json.dumps(res))
 
         return self._download_retcode
 
@@ -1076,14 +1287,15 @@ class YoutubeDL(object):
         """Run all the postprocessors on the given file."""
         info = dict(ie_info)
         info['filepath'] = filename
-        keep_video = None
         pps_chain = []
         if ie_info.get('__postprocessors') is not None:
             pps_chain.extend(ie_info['__postprocessors'])
         pps_chain.extend(self._pps)
         for pp in pps_chain:
+            keep_video = None
+            old_filename = info['filepath']
             try:
-                keep_video_wish, new_info = pp.run(info)
+                keep_video_wish, info = pp.run(info)
                 if keep_video_wish is not None:
                     if keep_video_wish:
                         keep_video = keep_video_wish
@@ -1092,12 +1304,12 @@ class YoutubeDL(object):
                         keep_video = keep_video_wish
             except PostProcessingError as e:
                 self.report_error(e.msg)
-        if keep_video is False and not self.params.get('keepvideo', False):
-            try:
-                self.to_screen('Deleting original file %s (pass -k to keep)' % filename)
-                os.remove(encodeFilename(filename))
-            except (IOError, OSError):
-                self.report_warning('Unable to remove downloaded video file')
+            if keep_video is False and not self.params.get('keepvideo', False):
+                try:
+                    self.to_screen('Deleting original file %s (pass -k to keep)' % old_filename)
+                    os.remove(encodeFilename(old_filename))
+                except (IOError, OSError):
+                    self.report_warning('Unable to remove downloaded video file')
 
     def _make_archive_id(self, info_dict):
         # Future-proof against any change in case
@@ -1178,6 +1390,8 @@ class YoutubeDL(object):
             res += 'video@'
         if fdict.get('vbr') is not None:
             res += '%4dk' % fdict['vbr']
+        if fdict.get('fps') is not None:
+            res += ', %sfps' % fdict['fps']
         if fdict.get('acodec') is not None:
             if res:
                 res += ', '
@@ -1215,7 +1429,9 @@ class YoutubeDL(object):
         formats = info_dict.get('formats', [info_dict])
         idlen = max(len('format code'),
                     max(len(f['format_id']) for f in formats))
-        formats_s = [line(f, idlen) for f in formats]
+        formats_s = [
+            line(f, idlen) for f in formats
+            if f.get('preference') is None or f['preference'] >= -1000]
         if len(formats) > 1:
             formats_s[0] += (' ' if self._format_note(formats[0]) else '') + '(worst)'
             formats_s[-1] += (' ' if self._format_note(formats[-1]) else '') + '(best)'
@@ -1228,6 +1444,26 @@ class YoutubeDL(object):
 
     def urlopen(self, req):
         """ Start an HTTP download """
+
+        # According to RFC 3986, URLs can not contain non-ASCII characters, however this is not
+        # always respected by websites, some tend to give out URLs with non percent-encoded
+        # non-ASCII characters (see telemb.py, ard.py [#3412])
+        # urllib chokes on URLs with non-ASCII characters (see http://bugs.python.org/issue3991)
+        # To work around aforementioned issue we will replace request's original URL with
+        # percent-encoded one
+        req_is_string = isinstance(req, basestring if sys.version_info < (3, 0) else compat_str)
+        url = req if req_is_string else req.get_full_url()
+        url_escaped = escape_url(url)
+
+        # Substitute URL if any change after escaping
+        if url != url_escaped:
+            if req_is_string:
+                req = url_escaped
+            else:
+                req = compat_urllib_request.Request(
+                    url_escaped, data=req.data, headers=req.headers,
+                    origin_req_host=req.origin_req_host, unverifiable=req.unverifiable)
+
         return self._opener.open(req, timeout=self._socket_timeout)
 
     def print_debug_header(self):
@@ -1239,11 +1475,13 @@ class YoutubeDL(object):
             self.report_warning(
                 'Your Python is broken! Update to a newer and supported version')
 
+        stdout_encoding = getattr(
+            sys.stdout, 'encoding', 'missing (%s)' % type(sys.stdout).__name__)
         encoding_str = (
             '[debug] Encodings: locale %s, fs %s, out %s, pref %s\n' % (
                 locale.getpreferredencoding(),
                 sys.getfilesystemencoding(),
-                sys.stdout.encoding,
+                stdout_encoding,
                 self.get_encoding()))
         write_string(encoding_str, encoding=None)
 
@@ -1262,8 +1500,19 @@ class YoutubeDL(object):
                 sys.exc_clear()
             except:
                 pass
-        self._write_string('[debug] Python version %s - %s' %
-                     (platform.python_version(), platform_name()) + '\n')
+        self._write_string('[debug] Python version %s - %s\n' % (
+            platform.python_version(), platform_name()))
+
+        exe_versions = FFmpegPostProcessor.get_versions()
+        exe_versions['rtmpdump'] = rtmpdump_version()
+        exe_str = ', '.join(
+            '%s %s' % (exe, v)
+            for exe, v in sorted(exe_versions.items())
+            if v
+        )
+        if not exe_str:
+            exe_str = 'none'
+        self._write_string('[debug] exe versions: %s\n' % exe_str)
 
         proxy_map = {}
         for handler in self._opener.handlers:
@@ -1271,6 +1520,17 @@ class YoutubeDL(object):
                 proxy_map.update(handler.proxies)
         self._write_string('[debug] Proxy map: ' + compat_str(proxy_map) + '\n')
 
+        if self.params.get('call_home', False):
+            ipaddr = self.urlopen('https://yt-dl.org/ip').read().decode('utf-8')
+            self._write_string('[debug] Public IP address: %s\n' % ipaddr)
+            latest_version = self.urlopen(
+                'https://yt-dl.org/latest/version').read().decode('utf-8')
+            if version_tuple(latest_version) > version_tuple(__version__):
+                self.report_warning(
+                    'You are using an outdated version (newest version: %s)! '
+                    'See https://yt-dl.org/update if you need help updating.' %
+                    latest_version)
+
     def _setup_opener(self):
         timeout_val = self.params.get('socket_timeout')
         self._socket_timeout = 600 if timeout_val is None else float(timeout_val)
@@ -1301,9 +1561,8 @@ class YoutubeDL(object):
         proxy_handler = compat_urllib_request.ProxyHandler(proxies)
 
         debuglevel = 1 if self.params.get('debug_printtraffic') else 0
-        https_handler = make_HTTPS_handler(
-            self.params.get('nocheckcertificate', False), debuglevel=debuglevel)
-        ydlh = YoutubeDLHandler(debuglevel=debuglevel)
+        https_handler = make_HTTPS_handler(self.params, debuglevel=debuglevel)
+        ydlh = YoutubeDLHandler(self.params, debuglevel=debuglevel)
         opener = compat_urllib_request.build_opener(
             https_handler, proxy_handler, cookie_processor, ydlh)
         # Delete the default user-agent header, which would otherwise apply in