[ie/kinescope] Add kinescope as BaseExtractor for get video info by API

yt_dlp/extractor/kinescope.py

@@ -0,0 +1,33 @@
+
+from .common import InfoExtractor
+from ..utils import (
+    ExtractorError,
+    traverse_obj,
+)
+
+
+class KinescopeBaseIE(InfoExtractor):
+
+    def _get_video_info(self, media_id, token, fatal=False, **kwargs):
+        headers = {'Authorization': f'Bearer {token}', 'Content-Type': 'application/json'}
+        video_info = self._download_json(f'https://api.kinescope.io/v1/videos/{media_id}',
+                                         media_id, fatal=fatal, headers=headers, **kwargs)
+        if traverse_obj(video_info, 'error'):
+            raise self._error_or_warning(ExtractorError(
+                f'Kinescope said: {video_info["error"]}', expected=True), fatal=fatal)
+        return video_info or {}
+
+    def _get_formats(self, video_info, fatal=False, **kwargs):
+        if traverse_obj(video_info, 'error'):
+            raise self._error_or_warning(ExtractorError(
+                f'Kinescope said: {video_info["error"]}', expected=True), fatal=fatal)
+        else:
+            formats = []
+            for item in traverse_obj(video_info, ('data', 'assets')):
+                formats.append({
+                    'url': item.get('download_link'),
+                    'format_id': item.get('quality'),
+                    'ext': item.get('filetype'),
+                    'resolution': item.get('resolution'),
+                })
+        return formats or {}