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

Code before:
            'thumbnail': r're:https://images.vkplay.live/public_video_stream/record/f5e6e3b5-dc52-4d14-965d-0680dd2882da/preview\?change_time=\d+',
            'duration': 10608,
            'view_count': int,
            'like_count': int,
            'categories': ['Atomic Heart'],
        },
        'params': {'skip_download': 'm3u8'},
    }]

    def _real_extract(self, url):
        username, video_id = self._match_valid_url(url).groups()

        initial_state = self._extract_initial_state(url, video_id)
        record_info = traverse_obj(initial_state, ('record', 'currentRecord', 'data', {dict}))
        if not record_info:
            record_info = self._download_json(
                f'https://api.vkplay.live/v1/blog/{username}/public_video_stream/record/{video_id}', video_id)

        return {
            'id': video_id,
            'formats': self._extract_formats(record_info, video_id),
            **self._extract_common_meta(record_info),
            **traverse_obj(record_info, {
                'uploader': ('blog', 'owner', 'nick', {str_or_none}),
                'uploader_id': ('blog', 'owner', 'id', {int_or_none}),
                'duration': ('duration', {int_or_none}),
            })
        }


class VKPlayLiveIE(VKPlayBaseIE):
    _VALID_URL = r'https?://vkplay\.live/(?P<id>[^/]+)(?:[#?]|$)'
    _TESTS = [{
        'url': 'https://vkplay.live/bayda',
        'info_dict': {
            'id': 'f02c321e-427b-408d-b12f-ae34e53e0ea2',
            'ext': 'mp4',
            'title': r're:эскапизм крута .*',
            'uploader': 'Bayda',
            'uploader_id': 12279401,
            'release_timestamp': 1687209962,
            'release_date': '20230619',
            'thumbnail': r're:https://images.vkplay.live/public_video_stream/12279401/preview\?change_time=\d+',
            'view_count': int,
            'concurrent_view_count': int,
            'like_count': int,
            'categories': ['EVE Online'],
            'live_status': 'is_live',
        },
        'skip': 'livestream',
        'params': {'skip_download': True},

Review comment (refactor):
IMO these could also be moved into `_extract_common_meta`, see my other suggestion.

`uploader_id` should be a string, so we want to use `str_or_none` to stringify potential integer values.

I think for `uploader` we could just use `{str}` instead of `{str_or_none}`, if all we wanna do is check the type. Either is fine though

Code after:
class VKPlayIE(VKPlayBaseIE):
    _VALID_URL = r'https?://vkplay\.live/(?P<username>[^/]+)/record/(?P<id>[a-f0-9\-]+)'
    _TESTS = [{
        'url': 'https://vkplay.live/zitsmann/record/f5e6e3b5-dc52-4d14-965d-0680dd2882da',
        'info_dict': {
            'id': 'f5e6e3b5-dc52-4d14-965d-0680dd2882da',
            'ext': 'mp4',
            'title': 'Atomic Heart (пробуем!) спасибо подписчику EKZO!',
            'uploader': 'ZitsmanN',
            'uploader_id': '13159830',
            'release_timestamp': 1683461378,
            'release_date': '20230507',
            'thumbnail': r're:https://images.vkplay.live/public_video_stream/record/f5e6e3b5-dc52-4d14-965d-0680dd2882da/preview\?change_time=\d+',
            'duration': 10608,
            'view_count': int,
            'like_count': int,
            'categories': ['Atomic Heart'],
        },
        'params': {'skip_download': 'm3u8'},
    }]

    def _real_extract(self, url):
        username, video_id = self._match_valid_url(url).groups()

        record_info = traverse_obj(self._download_json(
            f'https://api.vkplay.live/v1/blog/{username}/public_video_stream/record/{video_id}', video_id, fatal=False),
            ('data', 'record', {dict}))
        if not record_info:
            record_info = self._extract_from_initial_state(url, video_id, ('record', 'currentRecord', 'data'))

        return {
            **self._extract_common_meta(record_info),
            'id': video_id,
            'formats': self._extract_formats(record_info, video_id),
        }


class VKPlayLiveIE(VKPlayBaseIE):
    _VALID_URL = r'https?://vkplay\.live/(?P<id>[^/]+)/?(?:[#?]|$)'
    _TESTS = [{
        'url': 'https://vkplay.live/bayda',
        'info_dict': {
            'id': 'f02c321e-427b-408d-b12f-ae34e53e0ea2',
            'ext': 'mp4',
            'title': r're:эскапизм крута .*',
            'uploader': 'Bayda',
            'uploader_id': 12279401,
            'release_timestamp': 1687209962,
            'release_date': '20230619',
            'thumbnail': r're:https://images.vkplay.live/public_video_stream/12279401/preview\?change_time=\d+',
            'view_count': int,