curl -i -X GET 'https://api-ext.vh.yandex.net/video_meta/4291f9134c516965b1cc8f65f1fd6ec5'
-H 'Authorization: fefernrjkgnerkj3453445...'
Ответ:
HTTP/1.1200 OK
Content-Type: application/json
{"channel_id":"7403400242919037246","create_time":"2019-01-30T15:36:19","description":"New video for test","privacy":"public","thumbnail":"https://avatars.mds.yandex.net/get-vh/7654321/2a0000017394d89dc38bc0e21d954ce1f697/","title":"Watch it!"}