Agent skill

CapCut Video Director

by sun-guannan in sun-guannan/VectCutAPI

Guides an agent in building and polishing CapCut Desktop video projects through the CapCut MCP server and direct timeline file edits, including vertical canvas, subtitles and audio.

Apache-2.0Auto-check passedMedia & Creative

Install CapCut Video Director

skills CLI

$ npx skills add sun-guannan/VectCutAPI --skill capcut-director -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI

$ gh skill install sun-guannan/VectCutAPI capcut-director --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy

$ git clone --depth 1 https://github.com/sun-guannan/VectCutAPI.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.agents/skills/capcut-director .claude/skills/capcut-director && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Paste into Claude Code

Install the "capcut-director" agent skill from https://github.com/sun-guannan/VectCutAPI/tree/main/.agents/skills/capcut-director into .claude/skills/capcut-director/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "capcut-director", then confirm the skill loads.

Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

$skill-installer

$skill-installer install https://github.com/sun-guannan/VectCutAPI/tree/main/.agents/skills/capcut-director

Type this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.

skills CLI

$ npx skills add sun-guannan/VectCutAPI --skill capcut-director -a codex

Project install goes to .agents/skills/; add -g for ~/.codex/skills/.

GitHub CLI

$ gh skill install sun-guannan/VectCutAPI capcut-director --agent codex

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/sun-guannan/VectCutAPI.git skills-src && mkdir -p .agents/skills && cp -r skills-src/.agents/skills/capcut-director .agents/skills/capcut-director && rm -rf skills-src

Use ~/.agents/skills/ instead of .agents/skills for a personal install.

Codex skills documentation · loads skills from .agents/skills/

Paste into Codex

Install the "capcut-director" agent skill from https://github.com/sun-guannan/VectCutAPI/tree/main/.agents/skills/capcut-director into .agents/skills/capcut-director/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "capcut-director", then confirm the skill loads.

Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

skills CLI

$ npx skills add sun-guannan/VectCutAPI --skill capcut-director -a cursor

Project install goes to .agents/skills/; add -g for ~/.cursor/skills/.

GitHub CLI

$ gh skill install sun-guannan/VectCutAPI capcut-director --agent cursor

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/sun-guannan/VectCutAPI.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/.agents/skills/capcut-director .cursor/skills/capcut-director && rm -rf skills-src

Use ~/.cursor/skills/ instead of .cursor/skills for a personal install.

Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/

Paste into Cursor

Install the "capcut-director" agent skill from https://github.com/sun-guannan/VectCutAPI/tree/main/.agents/skills/capcut-director into .cursor/skills/capcut-director/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "capcut-director", then confirm the skill loads.

Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

gemini skills install

$ gemini skills install https://github.com/sun-guannan/VectCutAPI.git --path .agents/skills/capcut-director

--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.

skills CLI

$ npx skills add sun-guannan/VectCutAPI --skill capcut-director -a gemini-cli

Project install goes to .agents/skills/; add -g for ~/.gemini/skills/.

GitHub CLI

$ gh skill install sun-guannan/VectCutAPI capcut-director --agent gemini-cli

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/sun-guannan/VectCutAPI.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/.agents/skills/capcut-director .gemini/skills/capcut-director && rm -rf skills-src

Use ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.

Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/

Paste into Gemini CLI

Install the "capcut-director" agent skill from https://github.com/sun-guannan/VectCutAPI/tree/main/.agents/skills/capcut-director into .gemini/skills/capcut-director/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "capcut-director", then confirm the skill loads.

Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

GitHub CLI

$ gh skill install sun-guannan/VectCutAPI capcut-director

Installs for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).

skills CLI

$ npx skills add sun-guannan/VectCutAPI --skill capcut-director -a github-copilot

Project install goes to .agents/skills/; add -g for ~/.copilot/skills/.

Manual copy

$ git clone --depth 1 https://github.com/sun-guannan/VectCutAPI.git skills-src && mkdir -p .github/skills && cp -r skills-src/.agents/skills/capcut-director .github/skills/capcut-director && rm -rf skills-src

Use ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.

GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/

Paste into GitHub Copilot

Install the "capcut-director" agent skill from https://github.com/sun-guannan/VectCutAPI/tree/main/.agents/skills/capcut-director into .github/skills/capcut-director/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "capcut-director", then confirm the skill loads.

GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

skills CLI

$ npx skills add sun-guannan/VectCutAPI --skill capcut-director -a opencode

OpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.

GitHub CLI

$ gh skill install sun-guannan/VectCutAPI capcut-director --agent opencode

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/sun-guannan/VectCutAPI.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/.agents/skills/capcut-director .opencode/skills/capcut-director && rm -rf skills-src

Use ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.

OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/

Paste into OpenCode

Install the "capcut-director" agent skill from https://github.com/sun-guannan/VectCutAPI/tree/main/.agents/skills/capcut-director into .opencode/skills/capcut-director/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "capcut-director", then confirm the skill loads.

OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

Facts

Skill name: capcut-director
GitHub stars: 2.3k
Token cost: ~1.7k tokens
SKILL.md length: 639 words
Files: 1
Skills in repo: 2
Repo updated: Oct 3, 2026
First seen: Oct 7, 2026
Licence: Apache-2.0

At a glance

Guides an agent in building and polishing CapCut Desktop video projects through the CapCut MCP server and direct timeline file edits, including vertical canvas, subtitles and audio.

Works in 7 steps: CapCut Desktop Architecture & File System → In-Memory Process Lifecycle & The… → Canvas & Aspect Ratio Configuration → …
Building a vertical 9:16 video project in CapCut programmatically
SKILL.md covers 1. CapCut Desktop Architecture…, 2. In-Memory Process Lifecycle…, 3. Canvas & Aspect Ratio… and 4. Professional Typography &…, plus 3 more sections
Calls ffmpeg

What it does

This skill explains how CapCut Desktop stores projects and how to edit them without losing work. Project folders on Windows and macOS hold a root draft_content.json plus, in CapCut 9.x and later, a Timelines folder per timeline. The app reads the timeline copy, so writing only the root file opens an empty timeline, and both have to be written.

Because CapCut loads a project into memory and has no file watcher, its autosave overwrites outside edits. The skill says to close CapCut before modifying draft files and to reopen from the home screen afterwards, as part of a .locked rule for the process lifecycle. A vertical project such as 1080x1920 needs explicit canvas_config settings, or the preview falls back to widescreen. Further sections cover mobile subtitle and typography sizing, audio mastering and companion rendering.

When your agent uses it

Building a vertical 9:16 video project in CapCut programmatically
Editing a CapCut draft's timeline files without CapCut overwriting them
Setting up readable subtitles and typography for mobile viewing

Example prompts

“Create a vertical CapCut project with three clips, captions and background music through the CapCut MCP.”
“My edited draft_content.json opens as an empty timeline in CapCut; fix it.”
“Set up subtitles sized for a phone screen in my existing CapCut project.”

Requirements

CapCut Desktop
The CapCut MCP server

Workflow steps

7 steps, taken from the step headings in SKILL.md.

CapCut Desktop Architecture & File System
In-Memory Process Lifecycle & The '.locked' Rule
Canvas & Aspect Ratio Configuration
Professional Typography & Subtitle Standards
Audio Mastering & Sidechain Ducking
End-to-End Execution Workflow
Live Editing Reflection: Web Preview & Desktop Hot-Reload

What it can do on your machine

Read from SKILL.md and the folder at commit cfa4779. It shows what the files ask for, not the result of running them.

Tool permissions
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Runs code
Shell commands in SKILL.md call:
- ffmpeg
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md.
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

CapCut Video Director loads about 1.7k tokens when it runs. Until then it costs about 86 tokens; SKILL.md has 639 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it: ~86
When it runs · the whole SKILL.md, loaded when a task matches: ~1.7k

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from sun-guannan/VectCutAPI at commit cfa4779, republished under its Apache-2.0 licence (© sun-guannan). 639 words, ~1,731 tokens.

Download SKILL.mdSave it as .claude/skills/capcut-director/SKILL.md (or your agent's skills folder).

name: capcut-director
description: Expert skill for programmatically creating, editing, styling, and rendering cinematic video projects via CapCut MCP and direct timeline engineering. Covers multi-timeline CapCut 9.x+ architecture, 9:16 vertical canvas configuration, professional typography/subtitling, audio mastering, process locking, and companion rendering.

CapCut Video Director & Timeline Engineering Skill

This skill guides AI agents in programmatically directing, assembling, and polishing video projects using the CapCut MCP server and direct CapCut Desktop timeline engineering.

1. CapCut Desktop Architecture & File System

Project Locations

Windows: C:\Users\<Username>\AppData\Local\CapCut\User Data\Projects\com.lveditor.draft\<ProjectName>
macOS: ~/Library/Containers/com.lemon.lvpro/Data/Documents/JianyingPro/User Data/Projects/com.lveditor.draft/<ProjectName>

The Multi-Timeline Architecture (CapCut 9.x+)

Modern CapCut Desktop (v9.0+) uses a nested multi-timeline system:

com.lveditor.draft/<ProjectName>/
├── draft_content.json             <-- Root compatibility state
├── draft_meta_info.json           <-- Project name, thumbnail, edit time
├── draft_cover.jpg                <-- Cover thumbnail
├── .locked                        <-- Lock file present while project is open in CapCut
└── Timelines/
    └── <TIMELINE-UUID>/
        ├── draft_content.json     <-- ACTIVE TIMELINE STATE (Read by CapCut 9.x+!)
        ├── draft_content.json.bak <-- Autosave backup
        └── template.tmp           <-- Working buffer

[!IMPORTANT] CapCut 9.x+ reads Timelines/<UUID>/draft_content.json, NOT the root file alone! If you only write to the root draft_content.json (as standard legacy MCP libraries do), CapCut will open an empty timeline. Always write to both the root and the active timeline directory.

2. In-Memory Process Lifecycle & The '.locked' Rule

CapCut Desktop loads project files into C++ RAM upon opening and does not feature a live file watcher.

Avoid Overwrites: While CapCut is open, its background autosave thread will overwrite any external disk changes with its in-memory state.

Workflow for External Updates:

powershell

# 1. Close CapCut before modifying draft files
Get-Process -Name 'CapCut' -ErrorAction SilentlyContinue | Stop-Process -Force
Start-Sleep -Seconds 1

# 2. Write updated draft_content.json
# ... (write files)

# 3. Remove stale lock files
Get-ChildItem -Path "$env:LOCALAPPDATA\CapCut\User Data\Projects\com.lveditor.draft" -Recurse -Filter '.locked' | Remove-Item -Force

Reopening: Users must return to the CapCut Home screen or relaunch CapCut to reload the updated project from disk.

3. Canvas & Aspect Ratio Configuration

When creating a vertical project (e.g. 1080x1920 9:16), CapCut requires explicit canvas_config settings in draft_content.json. Otherwise, the preview player defaults to widescreen [16:9]:

json

{
  "canvas_config": {
    "height": 1920,
    "width": 1080,
    "ratio": "9:16"
  }
}

4. Professional Typography & Subtitle Standards

Mobile (9:16) Sizing Guidelines

Text must be legible on small mobile viewports. Avoid small desktop font defaults:

Text Type	Font Size (FFmpeg / pt)	CapCut Size Value	Purpose
Main Title / Hero Hook	80pt – 135pt	9.0 – 12.0	Strong focal impact, title cards
Secondary Sub-headline	68pt – 85pt	8.0 – 9.5	Key concepts, etymology breakdown
Subtitles / Explanations	56pt – 64pt	6.5 – 7.5	Minimum size for effortless mobile reading
Micro Labels / Badges	42pt – 48pt	5.0 – 5.5	Metadata, subtle tags only

Line Spacing & Vertical Breathing Room

Default CapCut line spacing (0.05) is too cramped for multi-line titles, causing text lines to collide.
Always set "line_spacing": 0.25 to 0.32 for multi-line text blocks.
Separate distinct text layers by at least 115px – 140px vertically in 1080x1920 space.

Contrast & Legibility Over Dynamic Footage

Never render plain text over variable video backgrounds:

Multi-layer Drop Shadows:
- Primary shadow: angle: -45.0, distance: 4.0 - 6.0, alpha: 0.95, diffuse: 0.08
Backdrop Box / Gradient Plate:
- Semi-transparent dark backplate: box=1:boxcolor=black@0.35:boxborderw=16
Safe Zones:
- Avoid placing subtitles at y < 15% (header UI/notch) or y > 85% (caption/bottom bar UI).
- Ideal lower-third subtitle placement: y = 75% - 80%.
- Upper-third placement (for scenes with bottom subjects): y = 20% - 25%.

Show full SKILL.md (248 more words)Show less

5. Audio Mastering & Sidechain Ducking

Cinematic videos require layered sound design:

Timeline:
Track 1: Ambient / Cinematic Music (-13 dB during speech, -5.5 dB in pauses)
Track 2: Voiceover (Loudness normalized, +1.25 volume, 80Hz high-pass filter)
Track 3: SFX Accents (Chimes, whooshes, risers, time-aligned to visual cuts)

Apply dynamic sidechain ducking (-7.5 dB to -10 dB reduction) on background music whenever the voiceover track is active.
Ensure audio ends with a 0.8s – 1.2s smooth fade-out.

6. End-to-End Execution Workflow

Initialize Project: Create the draft and import curated media via CapCut MCP or direct Python script.
Inject Multi-Timeline Structure: Write Timelines/<UUID>/draft_content.json with 9:16 canvas, scaled typography, and generous line spacing.
Master Render: Render an exact 30fps H.264 master video with normalized SAR (setsar=1) and AAC audio for instant preview.
Inspect Keyframes: Extract single-frame JPGs across all scene boundaries (ffmpeg -ss ... -vframes 1) to verify text centering and legibility before delivering.

7. Live Editing Reflection: Web Preview & Desktop Hot-Reload

To eliminate manual reopening and delays, use the dual live-editing system:

1. Web Live-Preview Player (0ms Feedback)

URL: http://127.0.0.1:9001/preview
Real-time HTML5 9:16 canvas player with interactive multi-track timeline scrubber.
Server-Sent Events (SSE): Automatically wakes up and reflects edits made via MCP or API without browser refresh.
Live Element Inspector: Allows instant in-browser tweaking of text strings, font sizes, colors, and coordinates with the "Apply Live Changes" button.
Direct Actions:
- ⚡ Sync to CapCut: Saves and deploys draft directly to CapCut Desktop.
- 🔄 Reload Desktop: Triggers automated CapCut desktop hot-reload.

2. Desktop Auto-Reload Companion

MCP Tool: capcut_reload_desktop(project_name=...)
Auto-Reload on Save: Pass auto_reload: true to capcut_save_draft to automatically refresh CapCut Desktop immediately after saving.
Automates project cycling (Home -> Reopen) in under 1 second without manual mouse intervention.

Files

Just SKILL.md in .agents/skills/capcut-director of sun-guannan/VectCutAPI.

Open the folder on GitHubat commit cfa4779

Compare with similar skills

CapCut Video Director next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

CapCut Video Director compared with similar skills
Skill	Stars	Used in	Tokens	Auto-check	Licence	Repo updated
CapCut Video Director this skillsun-guannan/VectCutAPI	2.3k	—	~1.7k	Automated safety check: Pass	Apache-2.0	6 days ago
OpenStoryline Install HelperFireRedTeam/FireRed-OpenStoryline	3.5k	—	~1.5k	Automated safety check: Notes	Apache-2.0	2 mo ago
Cassette Video EditCassette-Editor/oh-my-cassette	158	1 repos	~3.4k	Automated safety check: Pass	MIT	4 days ago
Bang Motionbangtutorial/bang-motion	584	—	~9.7k	Automated safety check: Pass	MIT	24 days ago
ShowtimeFavioVazquez/showtime	206	—	~3k	Automated safety check: Pass	MIT	yesterday
KinocutKyaniteLabs/kinocut	197	—	~5.7k	Automated safety check: Pass	Apache-2.0	today

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Questions about CapCut Video Director

What does CapCut Video Director do?

Guides an agent in building and polishing CapCut Desktop video projects through the CapCut MCP server and direct timeline file edits, including vertical canvas, subtitles and audio. This skill explains how CapCut Desktop stores projects and how to edit them without losing work.x and later, a Timelines folder per timeline.

When should I use CapCut Video Director?

CapCut Video Director fits situations like: building a vertical 9:16 video project in CapCut programmatically; editing a CapCut draft's timeline files without CapCut overwriting them; setting up readable subtitles and typography for mobile viewing.

How do I install CapCut Video Director in Claude Code?

Run `npx skills add sun-guannan/VectCutAPI --skill capcut-director -a claude-code`. Or copy the skill folder (.agents/skills/capcut-director in sun-guannan/VectCutAPI) into .claude/skills/capcut-director in your project. Claude Code loads it when a task matches its description.

How do I install CapCut Video Director in Codex?

Run `npx skills add sun-guannan/VectCutAPI --skill capcut-director -a codex`. Or copy the skill folder (.agents/skills/capcut-director in sun-guannan/VectCutAPI) into .agents/skills/capcut-director in your project. Codex loads it when a task matches its description.

Can I use CapCut Video Director in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add sun-guannan/VectCutAPI --skill capcut-director -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/capcut-director, .gemini/skills/capcut-director, .github/skills/capcut-director and .opencode/skills/capcut-director in your project.

What does CapCut Video Director need to run?

Going by SKILL.md and its folder, CapCut Video Director needs the command-line tools its instructions call (ffmpeg). Our summary lists: CapCut Desktop; The CapCut MCP server.

Does CapCut Video Director access the network?

SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.

Is CapCut Video Director safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does CapCut Video Director use?

CapCut Video Director is published under the Apache-2.0 licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does CapCut Video Director use?

About 1.7k tokens (SKILL.md is roughly 6.9k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to CapCut Video Director?

Skills that share tags, products or a category with CapCut Video Director: OpenStoryline Install Helper (FireRedTeam/FireRed-OpenStoryline, 3.5k stars), Cassette Video Edit (Cassette-Editor/oh-my-cassette, 158 stars), Bang Motion (bangtutorial/bang-motion, 584 stars) and Showtime (FavioVazquez/showtime, 206 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains CapCut Video Director?

sun-guannan (a GitHub user) maintains it in sun-guannan/VectCutAPI, which has 2,287 GitHub stars. The repository holds 2 skills in this directory. The repository was last updated on October 3, 2026.

Source: sun-guannan/VectCutAPI on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.

Install CapCut Video Director

Facts

At a glance

What it does

When your agent uses it

Example prompts

Requirements

Workflow steps

What it can do on your machine

Tool permissions

Runs code

Network

Credentials

Context cost

Safety

SKILL.md

CapCut Video Director & Timeline Engineering Skill

1. CapCut Desktop Architecture & File System

Project Locations

The Multi-Timeline Architecture (CapCut 9.x+)

2. In-Memory Process Lifecycle & The '.locked' Rule

3. Canvas & Aspect Ratio Configuration

4. Professional Typography & Subtitle Standards

Mobile (9:16) Sizing Guidelines

Line Spacing & Vertical Breathing Room

Contrast & Legibility Over Dynamic Footage

5. Audio Mastering & Sidechain Ducking

6. End-to-End Execution Workflow

7. Live Editing Reflection: Web Preview & Desktop Hot-Reload

1. Web Live-Preview Player (0ms Feedback)

2. Desktop Auto-Reload Companion

Files

Compare with similar skills

Similar skills

OpenStoryline Install Helper

Cassette Video Edit

Bang Motion

Showtime

Kinocut

Kinocut Repurpose

More from sun-guannan/VectCutAPI

VectCutAPI Video Editing

Related

Questions about CapCut Video Director