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diff --git a/hypervideo_dl/extractor/cda.py b/hypervideo_dl/extractor/cda.py
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+++ b/hypervideo_dl/extractor/cda.py
@@ -0,0 +1,214 @@
+# coding: utf-8
+from __future__ import unicode_literals
+
+import codecs
+import re
+
+from .common import InfoExtractor
+from ..compat import (
+    compat_chr,
+    compat_ord,
+    compat_urllib_parse_unquote,
+)
+from ..utils import (
+    ExtractorError,
+    float_or_none,
+    int_or_none,
+    merge_dicts,
+    multipart_encode,
+    parse_duration,
+    random_birthday,
+    urljoin,
+)
+
+
+class CDAIE(InfoExtractor):
+    _VALID_URL = r'https?://(?:(?:www\.)?cda\.pl/video|ebd\.cda\.pl/[0-9]+x[0-9]+)/(?P<id>[0-9a-z]+)'
+    _BASE_URL = 'http://www.cda.pl/'
+    _TESTS = [{
+        'url': 'http://www.cda.pl/video/5749950c',
+        'md5': '6f844bf51b15f31fae165365707ae970',
+        'info_dict': {
+            'id': '5749950c',
+            'ext': 'mp4',
+            'height': 720,
+            'title': 'Oto dlaczego przed zakrętem należy zwolnić.',
+            'description': 'md5:269ccd135d550da90d1662651fcb9772',
+            'thumbnail': r're:^https?://.*\.jpg$',
+            'average_rating': float,
+            'duration': 39,
+            'age_limit': 0,
+        }
+    }, {
+        'url': 'http://www.cda.pl/video/57413289',
+        'md5': 'a88828770a8310fc00be6c95faf7f4d5',
+        'info_dict': {
+            'id': '57413289',
+            'ext': 'mp4',
+            'title': 'Lądowanie na lotnisku na Maderze',
+            'description': 'md5:60d76b71186dcce4e0ba6d4bbdb13e1a',
+            'thumbnail': r're:^https?://.*\.jpg$',
+            'uploader': 'crash404',
+            'view_count': int,
+            'average_rating': float,
+            'duration': 137,
+            'age_limit': 0,
+        }
+    }, {
+        # Age-restricted
+        'url': 'http://www.cda.pl/video/1273454c4',
+        'info_dict': {
+            'id': '1273454c4',
+            'ext': 'mp4',
+            'title': 'Bronson (2008) napisy HD 1080p',
+            'description': 'md5:1b6cb18508daf2dc4e0fa4db77fec24c',
+            'height': 1080,
+            'uploader': 'boniek61',
+            'thumbnail': r're:^https?://.*\.jpg$',
+            'duration': 5554,
+            'age_limit': 18,
+            'view_count': int,
+            'average_rating': float,
+        },
+    }, {
+        'url': 'http://ebd.cda.pl/0x0/5749950c',
+        'only_matching': True,
+    }]
+
+    def _download_age_confirm_page(self, url, video_id, *args, **kwargs):
+        form_data = random_birthday('rok', 'miesiac', 'dzien')
+        form_data.update({'return': url, 'module': 'video', 'module_id': video_id})
+        data, content_type = multipart_encode(form_data)
+        return self._download_webpage(
+            urljoin(url, '/a/validatebirth'), video_id, *args,
+            data=data, headers={
+                'Referer': url,
+                'Content-Type': content_type,
+            }, **kwargs)
+
+    def _real_extract(self, url):
+        video_id = self._match_id(url)
+        self._set_cookie('cda.pl', 'cda.player', 'html5')
+        webpage = self._download_webpage(
+            self._BASE_URL + '/video/' + video_id, video_id)
+
+        if 'Ten film jest dostępny dla użytkowników premium' in webpage:
+            raise ExtractorError('This video is only available for premium users.', expected=True)
+
+        if re.search(r'niedostępn[ey] w(?:&nbsp;|\s+)Twoim kraju\s*<', webpage):
+            self.raise_geo_restricted()
+
+        need_confirm_age = False
+        if self._html_search_regex(r'(<form[^>]+action="[^"]*/a/validatebirth[^"]*")',
+                                   webpage, 'birthday validate form', default=None):
+            webpage = self._download_age_confirm_page(
+                url, video_id, note='Confirming age')
+            need_confirm_age = True
+
+        formats = []
+
+        uploader = self._search_regex(r'''(?x)
+            <(span|meta)[^>]+itemprop=(["\'])author\2[^>]*>
+            (?:<\1[^>]*>[^<]*</\1>|(?!</\1>)(?:.|\n))*?
+            <(span|meta)[^>]+itemprop=(["\'])name\4[^>]*>(?P<uploader>[^<]+)</\3>
+        ''', webpage, 'uploader', default=None, group='uploader')
+        view_count = self._search_regex(
+            r'Odsłony:(?:\s|&nbsp;)*([0-9]+)', webpage,
+            'view_count', default=None)
+        average_rating = self._search_regex(
+            (r'<(?:span|meta)[^>]+itemprop=(["\'])ratingValue\1[^>]*>(?P<rating_value>[0-9.]+)',
+             r'<span[^>]+\bclass=["\']rating["\'][^>]*>(?P<rating_value>[0-9.]+)'), webpage, 'rating', fatal=False,
+            group='rating_value')
+
+        info_dict = {
+            'id': video_id,
+            'title': self._og_search_title(webpage),
+            'description': self._og_search_description(webpage),
+            'uploader': uploader,
+            'view_count': int_or_none(view_count),
+            'average_rating': float_or_none(average_rating),
+            'thumbnail': self._og_search_thumbnail(webpage),
+            'formats': formats,
+            'duration': None,
+            'age_limit': 18 if need_confirm_age else 0,
+        }
+
+        info = self._search_json_ld(webpage, video_id, default={})
+
+        # Source: https://www.cda.pl/js/player.js?t=1606154898
+        def decrypt_file(a):
+            for p in ('_XDDD', '_CDA', '_ADC', '_CXD', '_QWE', '_Q5', '_IKSDE'):
+                a = a.replace(p, '')
+            a = compat_urllib_parse_unquote(a)
+            b = []
+            for c in a:
+                f = compat_ord(c)
+                b.append(compat_chr(33 + (f + 14) % 94) if 33 <= f and 126 >= f else compat_chr(f))
+            a = ''.join(b)
+            a = a.replace('.cda.mp4', '')
+            for p in ('.2cda.pl', '.3cda.pl'):
+                a = a.replace(p, '.cda.pl')
+            if '/upstream' in a:
+                a = a.replace('/upstream', '.mp4/upstream')
+                return 'https://' + a
+            return 'https://' + a + '.mp4'
+
+        def extract_format(page, version):
+            json_str = self._html_search_regex(
+                r'player_data=(\\?["\'])(?P<player_data>.+?)\1', page,
+                '%s player_json' % version, fatal=False, group='player_data')
+            if not json_str:
+                return
+            player_data = self._parse_json(
+                json_str, '%s player_data' % version, fatal=False)
+            if not player_data:
+                return
+            video = player_data.get('video')
+            if not video or 'file' not in video:
+                self.report_warning('Unable to extract %s version information' % version)
+                return
+            if video['file'].startswith('uggc'):
+                video['file'] = codecs.decode(video['file'], 'rot_13')
+                if video['file'].endswith('adc.mp4'):
+                    video['file'] = video['file'].replace('adc.mp4', '.mp4')
+            elif not video['file'].startswith('http'):
+                video['file'] = decrypt_file(video['file'])
+            f = {
+                'url': video['file'],
+            }
+            m = re.search(
+                r'<a[^>]+data-quality="(?P<format_id>[^"]+)"[^>]+href="[^"]+"[^>]+class="[^"]*quality-btn-active[^"]*">(?P<height>[0-9]+)p',
+                page)
+            if m:
+                f.update({
+                    'format_id': m.group('format_id'),
+                    'height': int(m.group('height')),
+                })
+            info_dict['formats'].append(f)
+            if not info_dict['duration']:
+                info_dict['duration'] = parse_duration(video.get('duration'))
+
+        extract_format(webpage, 'default')
+
+        for href, resolution in re.findall(
+                r'<a[^>]+data-quality="[^"]+"[^>]+href="([^"]+)"[^>]+class="quality-btn"[^>]*>([0-9]+p)',
+                webpage):
+            if need_confirm_age:
+                handler = self._download_age_confirm_page
+            else:
+                handler = self._download_webpage
+
+            webpage = handler(
+                urljoin(self._BASE_URL, href), video_id,
+                'Downloading %s version information' % resolution, fatal=False)
+            if not webpage:
+                # Manually report warning because empty page is returned when
+                # invalid version is requested.
+                self.report_warning('Unable to download %s version information' % resolution)
+                continue
+
+            extract_format(webpage, resolution)
+
+        self._sort_formats(formats)
+
+        return merge_dicts(info_dict, info)