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

Code before:
        webpage = self._download_webpage(url, display_id)

        client_id = self._html_search_meta('clientID', webpage, fatal=True)
        video_id = self._html_search_meta('eventID', webpage, fatal=True)

        video_data = self._download_json(
            'https://api.v3.invintus.com/v2/Event/getDetailed', video_id,
            headers={
                'authorization': 'embedder',
                'wsc-api-key': '7WhiEBzijpritypp8bqcU7pfU9uicDR',
            },
            data=json.dumps({
                'clientID': client_id,
                'eventID': video_id,
                'showStreams': True,
            }).encode())['data']

        formats = []
        subtitles = {}
        for stream_url in traverse_obj(video_data, ('streamingURIs', ..., {url_or_none})):
            fmts, subs = self._extract_m3u8_formats_and_subtitles(
                stream_url, video_id, 'mp4', m3u8_id='hls', fatal=False)
            formats.extend(fmts)
            self._merge_subtitles(subs, target=subtitles)
        if caption_url := traverse_obj(video_data, ('captionPath', {url_or_none})):
            self._merge_subtitles({'en': [{'en': 'vtt', 'url': caption_url}]}, target=subtitles)

        return {
            'id': video_id,
            'display_id': display_id,
            'formats': formats,
            'subtitles': subtitles,
            'title': remove_end(self._og_search_title(webpage), ' - TVW'),
            'description': self._og_search_description(webpage),
            **traverse_obj(video_data, {
                'title': ('title', {str}),
                'description': ('description', {clean_html}),
                'categories': ('categories', ..., {str}),
                'thumbnail': ('videoThumbnail', {url_or_none}),
                'timestamp': ('startDateTime', {unified_timestamp}),
                'location': ('locationName', {str}),
                'is_live': ('eventStatus', {lambda x: x == 'live'}),
            }),
        }


Review comment (suggestion):
```suggestion
            self._merge_subtitles({'en': [{'ext': 'vtt', 'url': caption_url}]}, target=subtitles)
```

Code after:
        webpage = self._download_webpage(url, display_id)

        client_id = self._html_search_meta('clientID', webpage, fatal=True)
        video_id = self._html_search_meta('eventID', webpage, fatal=True)

        video_data = self._download_json(
            'https://api.v3.invintus.com/v2/Event/getDetailed', video_id,
            headers={
                'authorization': 'embedder',
                'wsc-api-key': '7WhiEBzijpritypp8bqcU7pfU9uicDR',
            },
            data=json.dumps({
                'clientID': client_id,
                'eventID': video_id,
                'showStreams': True,
            }).encode())['data']

        formats = []
        subtitles = {}
        for stream_url in traverse_obj(video_data, ('streamingURIs', ..., {url_or_none})):
            fmts, subs = self._extract_m3u8_formats_and_subtitles(
                stream_url, video_id, 'mp4', m3u8_id='hls', fatal=False)
            formats.extend(fmts)
            self._merge_subtitles(subs, target=subtitles)
        if caption_url := traverse_obj(video_data, ('captionPath', {url_or_none})):
            subtitles.setdefault('en', []).append({'url': caption_url, 'ext': 'vtt'})

        return {
            'id': video_id,
            'display_id': display_id,
            'formats': formats,
            'subtitles': subtitles,
            'title': remove_end(self._og_search_title(webpage, default=None), ' - TVW'),
            'description': self._og_search_description(webpage, default=None),
            **traverse_obj(video_data, {
                'title': ('title', {str}),
                'description': ('description', {clean_html}),
                'categories': ('categories', ..., {str}),
                'thumbnail': ('videoThumbnail', {url_or_none}),
                'timestamp': ('startDateTime', {unified_timestamp}),
                'location': ('locationName', {str}),
                'is_live': ('eventStatus', {lambda x: x == 'live'}),
            }),
        }