ProRes 4444 with a real alpha channel
The top tier renders 4K ProRes 4444 with the background left transparent. Import the .mov, drop it over any footage, and the alpha channel does the compositing.
# render the top tier — quality "pro" is ProRes 4444 + alpha curl -X POST https://api.pinwing.ai/v1/renders \ -H "Authorization: Bearer pinwing_sk_…" \ -H "Content-Type: application/json" \ -d '{"modelId":"Ab3kF9x2qL1m","renderSettings":{"quality":"pro","length":6}}' # when done: a resumable link straight from storage curl -H "Authorization: Bearer pinwing_sk_…" \ "https://api.pinwing.ai/v1/renders/RENDER_ID/download-url?asset=video&expires=86400"
Same flow in the studio: pick the ProRes tier and render.
Why this tier exists
H.264 earns its place on the feed, but it is a delivery format: gradients band under compression, fine edges soften, and there is no alpha channel, so a rendered model can only ever sit on the background it was rendered with. ProRes 4444 is an intermediate format. It preserves what the renderer actually produced, transparency included, and holds up through grading.
That turns a turntable render into an element: title sequences, product spots, broadcast graphics, projection surfaces. The model spins over whatever your timeline holds, and it grades along with the rest of the footage.
What arrives
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video.mov the 3840×2160 ProRes 4444 master with alpha, served as video/quicktime.
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web.mp4 an H.264 preview of the same render, for checking the motion without pulling gigabytes.
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poster.png and thumb.mp4 the still and the looping thumbnail, same as every render.
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One zip if you prefer the bundle endpoint streams all of it without server-side buffering, sized for ProRes.
ProRes 4444 — common questions
Camera paths, easing, and durations work the same on every tier — the turntable video page covers the motion side.
Every endpoint and setting is in the reference.