"A complete rebuild, and much stronger": Huashu built an open-source stand-in for Claude Motion, 19 days, 2,400 stars

huashu-motion (alchaincyf / Hua Shu): why it took off

Channel: GitHub. Data as of 2026-11-06. The star curve comes from our github database (repo_day, daily since 2026-10-19); other sources are in the linked items.

One line

huashu-motion is an Agent Skill with a CLI and a browser editor (om). Install it in Claude Code or Codex, describe a clip in one sentence, and you get a product launch film with music and sound effects. The visuals are HTML written with GSAP/Canvas/Three.js. The music is an ABC score written by the agent, played with samples. To edit, you click on the frame and type a note.

Conclusion: it took off mainly because of Hua Shu as a distribution source. He is the top Chinese AI-skill KOL on GitHub, with 117k stars in total, and a WeChat article plus an X launch can bring in volume. Add his usual playbook: Anthropic launched Claude Motion, available only to Team/Enterprise, so he open-sourced a "recreated and stronger" version. He also rode the launch heat of DeepSeek, Grok Bot, and Claude Duet by making "convincing" launch clips of their products as demos. The product has real differences too: directing methodology, automatic music, and point-to-edit. But the track was already crowded in late September, so it's a late entrant.

1. Data

• Created around 2026-10-18; 11-06 days to 19: 2,407 stars, 242 forks, forks/stars about 10% (github repo_profile).
• Star curve (GitHub repo_day): 10-19 is 156 stars in; 10-20 gained 716 in a single day, reaching 872; 10-21 to 1,124; after that +20 to +150 a day, slowly fading, 10-30 only up 22; rebounding from 11-02, and 11-02 to 11-05 gained 62, 93, 134, 115 per day respectively. Up 522 over the last 7 days, and 488 over the first 7 days.
• Release attachment downloads (GitHub API): the 0.1.0 sample clips in v4 were downloaded 495 times total, and the 0.2.0 in v5 354 times. Few downloads: most people looked and starred.
• Same author's other repos (GitHub API): nuwa-skill 37.7k, huashu-design 28.9k, zhangxuefeng-skill 10.7k, darwin-skill 6.8k, huashu-art-motion 6.4k (created 10-06, 12 days before motion). Next to his own repos, huashu-motion is one of the weaker launches.

2. Competitors: who else does the same thing

"Coding agents make videos with code" started when Remotion released official skills in January 2026. After Opus 5.5 video went viral on X in late September, dozens of repos appeared at once. Star counts below are as of 2026-11-06 (github repo / GitHub API):

Verdict: none of them lack competitors; if anything, the category is badly crowded. Just for 'product launch film skills' there are cinetic, guizang, ai-promo-video-maker, product-launch-motion and take-one. huashu-motion has the most stars of the group, but it was built 3 to 4 weeks later than most of them.

3. Growth levers: where users came from (with evidence)

1. Author's own channels, first release (confirmed): on 10-18 evening, the WeChat Official Account 'Huashu' published 'Huashu-motion officially released!' (mirror), and on X @AlchainHust posted that he had 'made a skill that passes for an official product promo film' (X 10-18). His X bio reads 'holds 100k+ GitHub 🌟, Nuwa.skill 30000+ stars, Kitten Fill Light App Store Top Paid #1, Claude Code orange-book WeChat Reading hot search #1', which is ready-made credibility.
2. Riding trends: making 'fan films' for other people's products (confirmed):
   • When DeepSeek V4.1 Flash 10-17 launched, he made a launch film with Opus 5.5 the same day; the article says 'many people thought it was DeepSeek's official promo film'.
   • He made an unofficial film for Grok Bot, saying 'I think it's already better than the official versions I've seen' (X 10-18).
   • 10-19 made a promo film for @marclou's TrustMRR; 'the prompt was just the website link dropped in' (X 10-19). This move names the top indie-dev voice in the overseas community, which makes the demo the easiest to pitch and gives a chance of being reposted by him. 10-20 single-day +716 came right after this, but whether marclou reposted it is unverified. Another @byCanen 10-19 also relayed the TrustMRR case (X).
   • Claude Duet 10-21 launched (Reuters), he made a film the same day with the caption 'seems more refined than the official one' (X 10-22), and 10-22 later a release shipped with that film included.
3. 'Cloning a big company's paid feature' narrative (confirmed): same playbook as April reverse-engineering Claude Design to build huashu-design (28.9k stars). Claude Motion was only open to Team/Enterprise, and his stated goal was 'fully replicate Claude Motion's capabilities, and make it much stronger' (README 'the story behind it'). Around the same time people made YouTube videos like 'Claude Motion only for enterprise? I cloned it on Max with an open-source skill', showing this is a recognized traffic angle.
4. Watermark spreads the work (confirmed): for films over 4 seconds, a line 'Made with huashu-motion' appears at the end (search snippet citing the README). When users post the films to X or Douyin, they are advertising it for free.
5. Chinese reposts and aggregator sites (confirmed): Duan Yi's notes (10-25), working-ref (10-26), Yunzhan community, baoshare (11-01), aiyqx reposting the official account (11-02), InferNews in traditional Chinese (11-03). In English, skill aggregators like explainx, the TypingMind skill page, claude-updates, Devotd and AICrier index it automatically.
6. English "N free video skills" list post (confirmed, matches the second wave): Charlie Hills 11-01 posted on X "GitHub is blowing up with free skills that turn Claude Code into a video studio", and item 2 on the list is huashu-motion (X 11-01). After that came Reddit r/claudeskills "9 Claude skills for motion design" (about 11-03) and two Substack lists (11-04, 11-05). The timing fits the rise that picked up again around 11-02 and climbed to 100+. The author 11-02 also posted a new one around the same time, "用huashu-motion给Deepseek…" ("Using huashu-motion for Deepseek…"), which Design Radar picked up; I haven't read its content.
7. Cross-promotion within the author's projects (inferred): the READMEs of huashu-art-motion (10-06), huashu-design and the huashu-skills master index each link to the author's other projects; the WeChat article also promoted his FanBox editor.
8. No evidence found of ads, star-buying or sock-puppet accounts. The fork/star ratio of 10% is normal, and the suspect flag is empty (github library).

4. Why it took off

• Strong distribution source: the same author's 53 repos have 117k stars combined. A new skill from him passed 1k within 3 days, the same way huashu-art-motion and huashu-design took off. KOLs with similar Chinese reach like Guizang and Yuzi got only 907 and 449 stars with similar skills, which shows KOL reach alone isn't enough; Huashu's pull in the 'AI skill' niche is clearly stronger.
• Timing: the official side educated the market but kept most people out. Claude Motion launched 10-08, enterprise-only; 10 days later he shipped a free, local, open-source alternative that can even compose music.
• The demo material is itself the distribution. Launch films are the most attractive format to repost on X and Douyin. He chose the hottest products of the week (DeepSeek, Grok Bot, Claude Duet, TrustMRR) for fan films, each one riding a trend. 'Mistaken for an official film' is the strongest hook.
• The product has substance, enough to survive second-hand recommendations in the English community: point-and-edit on the frame, and writing the score before shooting, are both singled out by English lists like Charlie Hills'. The English README and the DeepSeek Flash case that cost only ¥1.95 also reduced the worry of 'you need Opus'.

5. Differentiation, and whether that's why it took off

Compared with similar tools, it differs in three ways:

1. Composer mode: the agent writes ABC notation, plays it with real instrument samples, marks the score to line up with scene cuts, and adds 23 kinds of sound effects. Most similar tools only add stock BGM, or no sound at all. Guizang's skill also has original music, so this is not unique.
2. Click-on-the-frame editor plus an inbox (om studio / om inbox): comments carry the timestamp, element and source location to the agent, which changes only that spot; common parameters also become input boxes you can edit yourself. This directly matches Claude Motion, which is rare among open-source peers.
3. Director rules come from testing: he measured the cut points, beats and loudness of 21 big-company launch films, dissected 142 films, and organized 20 motion languages. It requires writing a rhythm sheet before starting, and has om check / om qa for automatic error catching. The emphasis is 'serve the product', not flashy motion.

These differences are why people stay and recommend it, not why it grew. Growth came from the author's traffic, plus the 'replicate Claude Motion' narrative and trend-riding fan films. Two data points support this: the single-day peak of +716 came within 48 hours of launch, while sample downloads were only in the hundreds.

6. Visibility

It's circulating in small circles, and the field is already crowded. The Chinese AI community and the X AI-skill crowd know it, and English lists have started to index it; but no mainstream media has covered it, and there are already dozens of similar skills. It's not an unknown opportunity.

7. Copycats

No repo found that directly copies huashu-motion. The video skills created after 10-18 (rea-video, anymove, video-editor-skills, etc.) take different directions. In reverse, it is itself a latecomer in this track: cinetic, guizang and ai-promo-video-maker all came earlier.

8. What others can learn

• Within 1 to 2 weeks of a big company releasing a feature that is paid-only or enterprise-only, build an open-source, local version usable by any agent that 'replicates and surpasses' it. Huashu's approach has been validated twice (Claude Design for huashu-design, Claude Motion for huashu-motion).
• Use an 'unofficial launch film' of the week's hottest product as the demo, with hooks like 'better than the official one' and 'mistaken for the official film'; name the products of big-name voices (TrustMRR / marclou) and ask them to repost.
• Keep a removable 'Made with xxx' end credit in the finished film, turning it into a viral loop.
• Publish the original prompts in the README (typos included), the cost (¥1.95), and an honest 'limitations' section. This lowers the barrier for others to try it and adds credibility.
• After the Chinese launch, have the English README ready, so the English 'N free skills' list posts can pick it up for a second wave of traffic.

9. Still unclear

• Which post drove the +716 on 10-20: whether marclou reposted, and the view count on the X post, are unverified (neither x-radar nor our x library captured @AlchainHust).
• Whether the recovery from 11-02 came from Charlie Hills' and other English lists, from the author's 11-02 DeepSeek thread, or from both, can't be separated.
• Real usage is unknown: npx skills install counts aren't available; sample downloads are only in the hundreds; there are only 3 issues (one a Windows rendering error). That shows some people actually installed it, but not at scale.
• Output on Douyin and WeChat Channels using it was not checked (the author said the Claude Duet film would go to Douyin; its play count is unverified).