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

Code before:
        else:
            raise ExtractorError(f'Unknown delivery_status: {delivery_status}', expected=False)

        # TODO: if there are multiple playlists, tell me.
        m3u8_playlist_urls = self._html_search_regex(
            r'var listChannels = (.+);\n', webpage, 'listChannels', default=None)
        if not m3u8_playlist_urls:
            raise ExtractorError(
                'Could not find the playlist URL. This event may not be accessible.', expected=True)

        return {
            # mandatory metafields

            'id': data_json['app_id'],
            'title': data_json['app_name'],
            'formats': self._extract_m3u8_formats(m3u8_url=traverse_obj(self._parse_json(
                m3u8_playlist_urls, video_id), 0), video_id=video_id),

            # optional metafields

            'live_status': live_status,
            'description': traverse_obj(data_json, 'content'),
            'timestamp': calendar.timegm((datetime.datetime.strptime(
                traverse_obj(data_json, 'event_datetime'), '%Y%m%d%H%M')
                - datetime.timedelta(hours=9)).timetuple()),
        }


Review comment (refactor):
```suggestion
        return {
            'id': data_json['app_id'],
            'title': data_json.get('app_name'),
            'formats': self._extract_m3u8_formats(m3u8_playlist_url, video_id),
            'live_status': live_status,
            'description': traverse_obj(data_json, 'content'),
            'timestamp': try_call(lambda: unified_timestamp(data_json['event_datetime']) - 32400),
        }
```

Code after:
        else:
            self.report_warning(f'Unknown delivery_status {delivery_status}, treat it as a live')
            live_status = 'is_live'

        formats = []

        m3u8_playlist_urls = self._search_json(
            r'var listChannels\s*=', webpage, 'hls URLs', video_id, contains_pattern=r'\[.+\]', default=[])
        if not m3u8_playlist_urls:
            if live_status == 'is_upcoming':
                self.raise_no_formats(
                    f'Could not find the playlist URL. This live event will begin at {release_timestamp_str} JST', expected=True)
            else:
                self.raise_no_formats(
                    'Could not find the playlist URL. This event may not be accessible', expected=True)
        elif live_status == 'is_upcoming':
            self.raise_no_formats(f'This live event will begin at {release_timestamp_str} JST', expected=True)
        elif live_status == 'post_live':
            self.raise_no_formats('This event has ended, and the archive will be available shortly', expected=True)
        else:
            for m3u8_playlist_url in m3u8_playlist_urls:
                formats.extend(self._extract_m3u8_formats(m3u8_playlist_url, video_id))
            # FIXME: HTTP request headers need to be updated to continue download
            warning = 'Due to technical limitations, the download will be interrupted after one hour'
            if live_status == 'is_live':
                self.report_warning(warning)
            elif live_status == 'was_live':
                self.report_warning(f'{warning}. You can restart to continue the download')

        return {
            'id': data_json['app_id'],
            'title': data_json.get('app_name'),
            'formats': formats,
            'live_status': live_status,
            'description': data_json.get('content'),
            'release_timestamp': release_timestamp,
        }