A channel's uploads, newest first (YouTube Data API playlistItems.list on its uploads playlist, 2 quota units a page, never search's 100), each as `video_search` returns it. `since` (a date or an RFC 3339 time) drops older ones; `limit` is the page (default 25, most 50); a page that may continue carries `next_page_token`, sent back as `page_token`.
Price: $0.00 per unit.
Maximum charge per unit: $0.00.