GStars
    calesthio

    calesthio/OpenMontage

    #19 this week

    World's first open-source, agentic video production system. 12 production pipelines, 100+ tools, 700+ agent skill and production-knowledge files. Turn your AI coding assistant into a full video production studio.

    ai-agents
    ai
    agent
    agentic-ai
    claude
    copilot
    cursor
    Python
    AGPL-3.0
    78.3K stars
    10.4K forks
    396 GitHub watchers
    Updated Nov 8, 2026
    View on GitHub

    Build with Backblaze B2

    SDKs, agent skills, IDE extensions, and reference pipelines from Backblaze Labs. All open source.

    Explore Backblaze Labs

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    Where it stands

    Rank, growth pace and release cadence relative to everything GStars tracks.

    Ranks #8 among AI Agents repositories ranked this week, and #7 over the last 30 days; #19 of 189 repositories with measured growth this week (top 10%).

    This week's +4,304 stars is ahead of its 30-day pace of about +2,920 per week.

    The project lists 75 contributors on GitHub.

    Peaked at #4 in the weekly ranking the week of Jun 28, its best in the past year.

    Use Cases & Benefits

    • Provides an open-source, agentic AI system that automates end-to-end video production using pipelines, tools, and agent skills for scripting, asset generation, editing, and rendering.
    • Enables fully automated, reference-driven video creation combining real footage, AI-generated visuals, narration, music, and subtitles with built-in quality gates and cost governance.
    • Use for creating educational animated explainers with AI research, narration, and data-driven visuals without manual editing.
    • Use for producing documentary montages from free/open stock footage and archival sources without paid video generation APIs.
    • Use for generating cinematic trailers, social media clips, or product demos by orchestrating multiple AI tools and real footage in a structured pipeline.

    Should you depend on it?

    License terms, project hygiene and risks, from GitHub metadata and GStars' snapshots.

    License

    AGPL 3.0

    Network copyleft: like the GPL, and also triggered by offering the software over a network.

    Community files

    • README: present
    • Contributing guide: present

    Watch-outs

    • AGPL-style copyleft also applies when the software is offered over a network.
    • No GitHub releases; pin a commit or tag instead of a release.

    General guidance from repository metadata, not legal advice. How we score

    From the README

    The first open-source, agentic video production system.

    Follow The Build

    Turn your AI coding assistant into a full video production studio. Describe what you want in plain language — your agent handles research, scripting, asset generation, editing, and final composition.

    Important distinction: OpenMontage can make image-based videos, but it can also make a real video video for free/open-source workflows: the agent builds a corpus from free stock footage and open archives, retrieves actual motion clips, edits them into a timeline, and renders a finished piece. That is not the usual "animate a handful of stills and call it video" trick.

    "SIGNAL FROM TOMORROW" — a cinematic sci-fi trailer fully produced through OpenMontage: concept, script, scene plan, Veo-generated motion clips, soundtrack, and Remotion composition.

    "THE LAST BANANA" — a 60-second Pixar-style animated short about a lonely banana who finds friendship with a kiwi. 6 Kling v3-generated motion clips (via fal.ai), Google Chirp3-HD narration, royalty-free piano music, TikTok-style word-level captions, and Remotion composition. Total cost: $1.33.

    "VOID — Neural Interface" — a product ad produced with just one API key (OpenAI). 4 AI-generated images (gpt-image-1), TTS narration, auto-sourced royalty-free music, word-level subtitles via WhisperX, and Remotion data visualizations. Total cost: $0.69. Zero manual asset work.

    Excerpt from the calesthio/OpenMontage README on GitHub (AGPL-3.0 license). © its authors.Read the full README on GitHub

    Daily snapshots

    Stars gained per day, and how forks and open issues moved, from GStars' daily snapshots

    Aug 12: +571Aug 13: +91Aug 28: +967Aug 29: +675Aug 30: +653Aug 31: +408Sep 1: +354Sep 2: +296Sep 3: +335Sep 4: +171Sep 5: +60Sep 14: +754Sep 15: +265Sep 16: +106Sep 19: +218Sep 20: +105Oct 4: +405Oct 5: +766Oct 6: +777Oct 7: +355Oct 8: +447Oct 9: +361Oct 10: +297Oct 11: +798Oct 12: +276Oct 13: +430Oct 14: +410Oct 15: +305Oct 16: +326Oct 17: +305Oct 23: +287Oct 24: +292Oct 25: +399Oct 26: +297Oct 27: +294Oct 28: +289Oct 29: +266Oct 30: +290Oct 31: +408Nov 1: +543Nov 2: +387Nov 3: +947Nov 4: +669Nov 5: +548Nov 6: +681Nov 7: +570Nov 8: +502

    +31,103 stars over 89 days across 53 snapshot days; best day +967 on Aug 28.

    Forks

    10.4K+4.5K

    Open issues

    316+93

    Compared with peers in AI Agents

    Fastest-growing repositories GStars tracks in this cohort for the week of Nov 1, by 7-day star growth

    View category →
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    calesthio/OpenMontage78.3K+4.3K40—
    Category median114.5K+7.4K45—
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