updated 2026-11-15 04:07 UTC

ffmpeg-skill

Repository

Local video editor for coding agents: 42 FFmpeg tools with a machine-readable contract and an MCP server, for Claude Code, Cursor and Codex. Cut, captions, reframe, loudness, platform exports. No cloud, no API keys.

Agent Skills Python Listed MIT

Is ffmpeg-skill safe? Strong public trust posture, backed by multiple independent signals.

OSSF Scorecard 7.5 / 10
Provenance Attested
Signed commits 55%
Last push today
Advisories None known
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In detail: ffmpeg-skill scores 90.0/100 (Grade A), ranked #4 of 396 tracked open-source AI agent projects, on evidence coverage B (3 of 5 independent signal types). The public evidence: its packages ship with cryptographic provenance; OSSF Scorecard rates its supply-chain practices 7.5/10; 55% of recent commits are signed; no published advisory affects its latest release (ffmpeg-skill); last pushed 2026-11-15. Every point is earned from checkable signals — never paid placement. How scoring works →

How ffmpeg-skill could raise its score

Each line changes one public signal and recomputes with the live scoring function. The gains don't add up exactly, because the score is capped near the top.

Already done? Suggest a correctionAdd the trust badge

Chain of custody

Scanners check what the code says. This traces who ships ffmpeg-skill and whether that has changed: from the source repository, through how changes are reviewed and released, to the package you install. These are the checks for OWASP ASI04 Agentic Supply Chain Vulnerabilities and, for skills, AST02 Supply Chain Compromise.

  1. Source Partly signed

    github.com/kajisho5/ffmpeg-skill, MIT, last pushed 2026-11-15. 55% of the last 100 commits carry a verified signature; the rest can't be tied to a verified identity.

  2. Review and release Strong

    OpenSSF Scorecard rates the repository's practices 7.5/10 (scanned Nov 14, 2026). The checks that decide who can get a change released:

    • Code Review0
    • Branch Protection3
    • Signed Releasesn/a
    • Dangerous Workflow10
    • Token Permissions10
    • Pinned Dependencies10
    All 18 Scorecard checks
    Binary-Artifacts 10
    Branch-Protection 3
    CI-Tests 10
    CII-Best-Practices 0
    Code-Review 0
    Contributors 3
    Dangerous-Workflow 10
    Dependency-Update-Tool 10
    Fuzzing 10
    License 10
    Maintained 0
    Packaging 10
    Pinned-Dependencies 10
    SAST 10
    Security-Policy 10
    Signed-Releases -1
    Token-Permissions 10
    Vulnerabilities 10

  3. Published packages Linked and attested

    • npm ffmpeg-skill Source link points back to this repo Build provenance attested

  4. What you install today No known advisories

    Latest release checked: ffmpeg-skill 3.8.4. No published advisory affects it (OSV, checked 2026-11-14).

Changes to this chain

  • 2026-11-12 OSSF Scorecard: 7.5/10

Evidence behind this score

Coverage B: 3 of 5 independent evidence types found.

  • GitHub repository data
  • Package downloads
  • Supply-chain checks
  • Public actions (missing)
  • Community mentions (missing)

Verify this score yourself

Every build re-issues ffmpeg-skill’s score as an Ed25519-signed credential, valid for 7 days. You can check it offline against HVTracker’s published key; if anyone changes a number after signing, verification fails.

Signed credential (JSON) How to verify

What this score doesn’t check

It covers who ships the code, not what the code does. It doesn’t read the skill’s instructions for injected instructions, watch runtime behaviour, or find bugs nobody has disclosed yet. For that, run a content scanner before you install it, such as Cisco Skill Scanner.

How ffmpeg-skill compares in Agent Skills

  1. #2 Vercel Skills 91.3 +1.3
  2. #3 Claude Mem 90.5 +0.5
  3. #4 ffmpeg-skill 90.0 this agent
  4. #5 Larksuite Cli 89.1 −0.9
  5. #6 Notebooklm Py 88.5 −1.5

Bars show each HVTrust score; the tick marks ffmpeg-skill’s 90.0.

Where the 90.0 comes from

HVTrust dimensions vs the Agent Skills average

90.0 / 100 · 100.0% confidence

ffmpeg-skill Agent Skills average (396 agents)

Safety / Integrity50% OSSF Scorecard · 30% provenance · 20% signed commits
19.6 / 25
11.4 above avg 8.2
Identity / Provenance60% listing status · 40% build provenance
18.0 / 18
6.5 above avg 11.5
Transparency50% declared license · 50% OSSF Scorecard
14.9 / 17
2.7 above avg 12.2
Maintenance60% last-push freshness · 40% commit activity
20.0 / 20
6.0 above avg 14.0
AdoptionLog-scaled stars · package downloads
14.3 / 20
5.1 above avg 9.2

Quick Trust Read

What Would Improve It
Improve adoption to lift the weakest part of the trust profile.
Recent Changes
2026-11-12
Provider Added
Runtime surface grew — new detected provider dependency: Google Gemini
2026-11-12
Scorecard Added
OSSF Scorecard: 7.5/10
2026-11-12
Grade Changed
Trust grade B → A
Maintainer Checklist
Keep signals current Trust posture is already in a healthy range. The main job is to keep provenance, maintenance, and public evidence fresh.
Compare with Open Code Review
View Agent Skills Report missing data
85.0
Activity sub-score · out of 100
#4
In Agent Skills

How to read this: HVTrust (0–100) weighs supply-chain signals (provenance, OSSF Scorecard, signed commits, open license) alongside real-world adoption. Grade A reflects the trust score band: A ≥ 80, B ≥ 65, C ≥ 50, D < 50. Evidence coverage B is separate — it grades how many independent signal types back the score (3 of 5), so a high score on thin evidence stays visible. Full methodology →

Signals refreshed 2026-11-15 04:07 UTC · Repo last pushed today

Rank Trend

2026-11-10 2026-11-15

Activity & Reach

Stars
5.6k
Forks
487
Last Push
2026-11-15
today
Commits (4 wk)
189
Downloads (7d)
9,492
npm
HN mentions (30d)
—
Open Issues
19
Rank Change
▲1
was #5

Analysis

Activity Inputs

85.0 / 100
StarsRepository reach
22.5 / 30
FreshnessLast push recency
25.0 / 25
ActivityRecent commits
25 / 25
CommunityFork signal
12.5 / 20

Common questions about ffmpeg-skill

Public supply-chain signals for ffmpeg-skill are strong: it has multiple independent trust indicators in place. This does not replace your own security review, but ffmpeg-skill carries less obvious unverified-evidence risk than projects with thin signals.
Does ffmpeg-skill publish package provenance?
Yes. ffmpeg-skill's package releases carry build provenance attestations, which cryptographically link the published package back to its source repository and CI workflow.
Does ffmpeg-skill have an OpenSSF Scorecard?
ffmpeg-skill has an OpenSSF Scorecard score of 7.5/10. The Scorecard checks for branch protection, signed releases, dependency updates, fuzzing, code review, and other supply-chain hygiene items. See the full check breakdown on this page.
Is ffmpeg-skill actively maintained?
Actively maintained. The repository was pushed to within the last 1 day(s).
What license does ffmpeg-skill use?
ffmpeg-skill ships under MIT. A declared, OSI-approved license is one of the transparency signals HVTrust scores.
Are ffmpeg-skill's commits signed?
55% of the last 100 commits to ffmpeg-skill are verified-signed (GPG, SSH, S/MIME, or GitHub's signing flow). Signed commits help confirm that code was authored by who the commit claims.

Not a safety endorsement. HVTracker describes what public signals show, not whether a project is safe for your use case. Run your own security review before adopting in production.

Compare ffmpeg-skill head-to-head

ffmpeg-skill vs Open Code Review → ffmpeg-skill vs Vercel Skills → ffmpeg-skill vs Claude Mem →

AI agent surface

MCP, providers, tool surface
Scored in HVTrust

These runtime-trust fields — detected from public repo docs and manifests — contribute a bounded adjustment to this project's HVTrust score alongside supply-chain evidence. The exact values each field can add or subtract are documented in the methodology → Compare this surface across every listed agent in the capability matrix →

MCP Server Support
high confidence
Implemented
ffmpeg-skill appears to expose MCP server capabilities.
Detailed evidence is not shown in the public view.
External Service Dependencies
high confidence
2 detected
Public provider/service dependencies detected.
Credential signal: No explicit API-key/config marker detected.
Tool / Plugin Surface
high confidence
Declared
Declared plugin/integration surface detected.
Detailed evidence is not shown in the public view.
Package Provenance Drift
high confidence
Match
Published package metadata matches the tracked repo
Detailed evidence is not shown in the public view.
  • MCP signal live
  • External deps live
  • Tool / plugin surface live
  • Package provenance drift live
How this surface has changed

Detected changes to ffmpeg-skill's runtime surface and supply-chain posture, from daily public-signal snapshots. A change here means our detectors see something different — a genuinely changed capability, or better evidence of an existing one.

2026-11-12
Provider Added
Runtime surface grew — new detected provider dependency: Google Gemini

Maintain ffmpeg-skill?

For maintainers

HVTrust scores ffmpeg-skill from public signals only — we never contact maintainers first. If a signal is wrong, stale, or missing (provenance you publish, a Scorecard you run, signed releases), tell us and we'll review it. Corrections are public and tracked on GitHub.

Submit a correction → Add the trust badge

Reputation Timeline

Signal history
Listed 1HVTrust 1Rank 1Grade 1Scorecard 1Surface 1
2026-11-12
Provider Added
Runtime surface grew — new detected provider dependency: Google Gemini
2026-11-12
Scorecard Added
OSSF Scorecard: 7.5/10
2026-11-12
Grade Changed
Trust grade B → A
2026-11-12
Rank Moved
Rank rose 22 spots (#27 → #5)
2026-11-12
HVTrust Changed
HVTrust up 13.4pts (76.4 → 89.8)
2026-11-10
Newly Listed
First tracked at rank #27
GitHub → npm: ffmpeg-skill

Embed Badge Badge guide for maintainers →

For maintainers
HVTrust 90.0 Grade A
Markdown:
[![HVTrust](https://hvtracker.net/badge/ffmpeg-skill.svg)](https://hvtracker.net/agents/ffmpeg-skill)
HTML:
<a href="https://hvtracker.net/agents/ffmpeg-skill"><img src="https://hvtracker.net/badge/ffmpeg-skill.svg" alt="HVTrust"></a>

Other agents in Agent Skills

Data sources
GitHub REST API (repo, commits, stars, forks, license) · npm Registry (downloads, provenance) · OpenSSF Scorecard CLI
Each agent's signals refresh once daily across 6 staggered batches. Methodology v4.4 · Raw JSON