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Control YouTube Shorts Thumbnails with a First-Frame Card: A Scalable Repurposing Workflow
Summary Key Takeaway: Make your custom thumbnail the video’s first 1.5–2 seconds and scale the workflow from long videos. Claim: YouTube Shorts thumbnails are selected from frames inside the video, not from separate uploads. * Shorts thumbnails come from video frames, not separate uploads. * A 1.5–2