Repository: yt-dlp/yt-dlp
File: yt_dlp/extractor/ard.py (Python)

Code before:

        return traverse_obj(patterns, (..., {partial(re.match, string=title)}, {
            'season_number': ('season_number', {int_or_none}),
            'episode_number': ('episode_number', {int_or_none}),
            'episode': ((
                ('episode', {str_or_none}),
                ('ep_info', {lambda x: title.replace(x, '')}),
                ('title', {str}),
            ), {str.strip}),
        }), get_all=False)

    def _real_extract(self, url):
        display_id = self._match_id(url)

        page_data = self._download_json(
            f'https://api.ardmediathek.de/page-gateway/pages/ard/item/{display_id}', display_id, query={
                'embedded': 'false',
                'mcV6': 'true',
            })

        # For user convenience we use the old contentId instead of the longer crid
        # Ref: https://github.com/yt-dlp/yt-dlp/issues/8731#issuecomment-1874398283
        old_id = traverse_obj(page_data, ('tracking', 'atiCustomVars', 'contentId', {str_or_none}))
        if old_id:
            video_id = old_id
            archive_ids = [make_archive_id(ARDBetaMediathekIE, display_id)]
        else:
            self.report_warning(f'Could not extract contentId{bug_reports_message()}')
            video_id = display_id
            archive_ids = None

        player_data = traverse_obj(
            page_data, ('widgets', lambda _, v: v['type'] in ('player_ondemand', 'player_live'), {dict}), get_all=False)
        is_live = player_data.get('type') == 'player_live'
        media_data = traverse_obj(player_data, ('mediaCollection', 'embedded', {dict}))

        if player_data.get('blockedByFsk'):
            self.raise_no_formats('This video is only available after 22:00', expected=True)

        formats = []
        subtitles = {}
        for stream in traverse_obj(media_data, ('streams', ..., {dict})):
            kind = stream.get('kind')
            # Prioritize main stream over sign language and others
            preference = 1 if kind == 'main' else None
            for media in traverse_obj(stream, ('media', lambda _, v: url_or_none(v['url']))):
                media_url = media['url']

                audio_kind = traverse_obj(media, (
                    'audios', 0, 'kind', {str}), default='').replace('standard', '')
                lang_code = traverse_obj(media, ('audios', 0, 'languageCode', {str})) or 'deu'

Review comment (suggestion):
```suggestion
        old_id = traverse_obj(page_data, ('tracking', 'atiCustomVars', 'contentId', {int}))
        if old_id is not None:
            video_id = str(old_id)
            archive_ids = [make_archive_id(ARDBetaMediathekIE, display_id)]
```

Code after:

        return traverse_obj(patterns, (..., {partial(re.match, string=title)}, {
            'season_number': ('season_number', {int_or_none}),
            'episode_number': ('episode_number', {int_or_none}),
            'episode': ((
                ('episode', {str_or_none}),
                ('ep_info', {lambda x: title.replace(x, '')}),
                ('title', {str}),
            ), {str.strip}),
        }), get_all=False)

    def _real_extract(self, url):
        display_id = self._match_id(url)

        page_data = self._download_json(
            f'https://api.ardmediathek.de/page-gateway/pages/ard/item/{display_id}', display_id, query={
                'embedded': 'false',
                'mcV6': 'true',
            })

        # For user convenience we use the old contentId instead of the longer crid
        # Ref: https://github.com/yt-dlp/yt-dlp/issues/8731#issuecomment-1874398283
        old_id = traverse_obj(page_data, ('tracking', 'atiCustomVars', 'contentId', {int}))
        if old_id is not None:
            video_id = str(old_id)
            archive_ids = [make_archive_id(ARDBetaMediathekIE, display_id)]
        else:
            self.report_warning(f'Could not extract contentId{bug_reports_message()}')
            video_id = display_id
            archive_ids = None

        player_data = traverse_obj(
            page_data, ('widgets', lambda _, v: v['type'] in ('player_ondemand', 'player_live'), {dict}), get_all=False)
        is_live = player_data.get('type') == 'player_live'
        media_data = traverse_obj(player_data, ('mediaCollection', 'embedded', {dict}))

        if player_data.get('blockedByFsk'):
            self.raise_no_formats('This video is only available after 22:00', expected=True)

        formats = []
        subtitles = {}
        for stream in traverse_obj(media_data, ('streams', ..., {dict})):
            kind = stream.get('kind')
            # Prioritize main stream over sign language and others
            preference = 1 if kind == 'main' else None
            for media in traverse_obj(stream, ('media', lambda _, v: url_or_none(v['url']))):
                media_url = media['url']

                audio_kind = traverse_obj(media, (
                    'audios', 0, 'kind', {str}), default='').replace('standard', '')
                lang_code = traverse_obj(media, ('audios', 0, 'languageCode', {str})) or 'deu'