video-thumbnail-generator
Create platform-ready thumbnails from real video frames. Use when the user wants a thumbnail, cover image, YouTube cover, Shorts cover, Bilibili cover, Xiaohongshu cover, or other video poster image.
Profile →npx skills add 0xsline/OpenChatCut --skill video-thumbnail-generator --agent claude-code
Same command for any agent — swap --agent for codex, cursor, copilot.
Weekly change comes from our own snapshots, not the repository page — it measures attention, not adoption.
# Video Thumbnail Generator Use this skill to create a high-clarity thumbnail or cover image from the actual video content. ## Non-Negotiables 1. Use the real video as visual evidence. - If the thumbnail shows a person, product, UI, frame, or scene from the video, extract or inspect real frames. - Never invent a generic software interface, fake product screen, or unrelated person. 2. Read style references before recommending styles. - Use `references/thumbnail-styles.md` and `references/thumbnail-style-recipes.md`. - Only offer style directions supported by those references or by the user's explicit instruction. 3. Keep text short and readable. - Usually 2-5 words. - Avoid thin type, low contrast, small labels, and clutter. ## Workflow 1. Confirm platform and aspect ratio if missing. - YouTube / Bilibili: usually 16:9. - Shorts / TikTok / Douyin: usually 9:16. - Xiaohongshu / WeChat Channels: usually 3:4. - Correct ambiguous ratio language gently, especially 4:3 vs 3:4. 2. Read project state, transcript, and available media context. 3. Inspect candidate frames: - expressive face - product or UI clearly visible - dramatic action moment - clean composition - strong lighting or clear
- Non-Negotiables
- Workflow
- Prompt Shape
- References
What does the video-thumbnail-generator skill do?
Create platform-ready thumbnails from real video frames. Use when the user wants a thumbnail, cover image, YouTube cover, Shorts cover, Bilibili cover, Xiaohongshu cover, or other video poster image.
How do I install it?
Run `npx skills add 0xsline/OpenChatCut --skill video-thumbnail-generator --agent claude-code` — it drops the skill into your project so the agent can pick it up. Swap the --agent value for codex, cursor or copilot if you use one of those.
Where does this skill come from?
From 0xsline/OpenChatCut, a repository with 805 stars. We read it straight from the repository tree rather than a submitted listing, so what you see here is what is actually published.
Is a popular skill a good skill?
Not necessarily. Stars measure attention, not adoption — a repository can trend for a week and be abandoned. That is why we show the weekly change from our own snapshots next to the total, instead of a single flattering number.