Loading Spinner Circle UI Overlay Alpha Channel 4K Vertical - 4K 影片檔

A clean circular loading spinner in the centre of the frame: a bright arc chasing round a faint ring, stretching and easing as it turns, with a Loading label and animated dots underneath. Small and centred, so it sits over a frozen screen, a video intro or a waiting moment. Generic placeholder labels, no app, platform or brand names. Transparent background with a straight alpha channel: lay it over your footage in Normal mode, no keying needed; solid panels, bars and buttons stay solid over bright shots. Seamless 15-second loop. Vertical 9:16 cut for reels, stories and phone screens. Alpha channel will be included when downloading the 4K Apple ProRes 4444 file only.