sip-videogen 0.3.2

Transform video ideas into complete videos using AI agent teams

sip-videogen

CLI tool that transforms vague video ideas into complete videos using an AI agent team.

How It Works

User Idea → AI Agent Script Team → Reference Images → Video Clips → Final Video

1. You provide a video idea (e.g., "A cat astronaut explores Mars")
2. AI agents collaborate to write a script with scenes and shared visual elements
3. Reference images are generated for visual consistency (characters, props, environments)
4. Video clips are generated for each scene using Google VEO 3.1 (8 seconds per clip)
5. Clips are assembled into a final video with background music via FFmpeg

Installation

Option 1: Install from PyPI (Recommended)

# Install pipx if you don't have it
pip install pipx

# Install sip-videogen
pipx install sip-videogen

# Run - first time will prompt for configuration
sipvid

On first run, you'll be prompted to paste your configuration. Just paste the entire config block and press Enter twice.

Option 2: Run from Source

# Clone the repo
git clone https://github.com/chufeng-huang-sipaway/sip-videogen.git
cd sip-videogen

# Copy and fill in your API keys
cp .env.example .env

# Run (installs everything automatically on first run)
./start.sh

Prerequisites

• Python 3.11+ (brew install python@3.11 on macOS)
• FFmpeg (brew install ffmpeg on macOS)

API Keys Required

Get these API keys:

Key	Where to get it
OPENAI_API_KEY	OpenAI Platform
GEMINI_API_KEY	Google AI Studio
GOOGLE_CLOUD_PROJECT	Google Cloud Console
SIP_GCS_BUCKET_NAME	Create via gsutil mb -l us-central1 gs://your-bucket

Google Cloud Setup (one-time)

gcloud auth login
gcloud auth application-default login
gcloud config set project YOUR_PROJECT
gcloud services enable aiplatform.googleapis.com storage.googleapis.com
gsutil mb -l us-central1 gs://YOUR_BUCKET_NAME

Configuration

First-Time Setup

On first run, sipvid will prompt you to configure your environment. You can either:

1. Paste a config block (recommended) - Paste all your keys at once:

   OPENAI_API_KEY=sk-...
   GEMINI_API_KEY=AIza...
   GOOGLE_CLOUD_PROJECT=my-project
   SIP_GCS_BUCKET_NAME=my-bucket
   

2. Enter keys individually - Follow the interactive prompts

Configuration is stored in ~/.sip-videogen/.env and works from any directory.

Managing Configuration

sipvid config          # Interactive config editor
sipvid config --show   # Show current configuration status
sipvid config --reset  # Replace config with a new config block

Usage

Interactive Menu

sipvid

This launches a simplified interactive menu:

? Use arrow keys to navigate, Enter to select:
❯ Generate Video     Create a new video from your idea
  View History       See previous generations
  More Options...    Settings, resume, and other tools
  Exit

Director's Pitch Workflow

When you select "Generate Video", you'll experience a streamlined creative workflow:

1. Enter your idea - Describe your video concept
2. Select duration - Choose from 15s, 30s, 45s, or 60s
3. Review the pitch - The AI presents a "Director's Pitch" with:
   • Title and logline
   • Tone and visual style
   • Key elements and scene breakdown
4. Approve or refine - Accept the pitch, provide feedback for revision, or cancel
5. Generate - Once approved, full video generation begins

The AI agent team decides the optimal scene count based on your story's complexity.

View History

Access all your previous video generations from the main menu:

• See title, date, duration, and completion status
• Resume or regenerate from any previous script
• Open output folders directly

Direct Commands

# Generate a video (uses interactive pitch flow)
sipvid generate "A cat astronaut explores Mars"

# Regenerate videos from an existing run (reuse saved script + images)
sipvid resume output/sip_20251210_123855_e9a845e4

# Generate with specific number of scenes
sipvid generate "Epic space battle" --scenes 5

# Dry run (script only, no video generation)
sipvid generate "Underwater adventure" --dry-run

# Skip cost confirmation
sipvid generate "Robot dance party" --yes

# Check configuration status
sipvid status

Brand Kit Generation

Generate a complete brand design library from a simple concept:

sipvid brandkit "A skincare product brand with a tropical, organic feel"

How it works:

1. Describe your brand - Provide a concept (product type, style, audience)
2. Review the brief - AI analyzes your concept and creates a brand brief
3. Choose a direction - Select from 3 creative directions with different palettes and styles
4. Approve the logo - Review and approve the generated logo before continuing
5. Generate assets - All other assets use your approved logo for visual consistency

Generated assets include:

Category	Assets
Logo	Primary brand logo (used as reference for all other assets)
Packaging	Hero shot, alternate colorway
Lifestyle	In-use photo, flatlay, environment
Mascot	Primary and alternate poses
Marketing	Landing page, recipe card, merch, pop-up stand, meme

The logo you approve becomes the visual anchor - it's passed as a reference image to Gemini when generating packaging and marketing assets, ensuring consistent branding across all outputs.

Automatic Updates

The tool automatically checks for updates on each run. When a new version is available, you'll see a notification:

┌─────────────────────────────────────────────────┐
│  Update available!                              │
│  Current version: 0.1.0                         │
│  Latest version:  0.2.0                         │
│  Run: sipvid update                             │
└─────────────────────────────────────────────────┘

Update commands:

sipvid update         # Check and install updates
sipvid update --check # Only check, don't install

Architecture

The tool uses a hub-and-spoke agent pattern:

• Showrunner (orchestrator) - Coordinates the script development process
  • Screenwriter - Creates scene breakdown with professional cinematography
  • Production Designer - Identifies shared visual elements for consistency
  • Continuity Supervisor - Validates consistency and optimizes prompts
  • Music Director - Designs complementary background music

VEO 3.1 Prompt Optimization

Prompts are structured following Google's VEO 3.1 best practices:

• Prompt stack (global → elements → shots) keeps critical anchors short:
  • Global: tone + visual_style fragments (palette, light, camera vibe, treatment)
  • Entity cards: one line per shared element (role descriptor + 2–3 anchors)
  • Shots: timestamped micro-prompts [00:00-00:04] 4s medium static on reporter asking question at snowy city curb; crowd 6-8 crosses behind; bright overcast; flow: no pauses
• Professional camera terminology: dolly, tracking, crane shots with depth of field control
• Dialogue integration: Quotes and speaker attribution for natural delivery
• Audio design: Ambient: and SFX: prefixes for precise sound control
• Continuity anchors: per-shot “flow: keep motion continuous, no pauses” with explicit exits/entrances and persistent props/splatter when needed

This same structured stack is used for Kling prompts (trimmed to the 2.5k character limit) to preserve detail without overloading the model.

Clip Duration & Clip Patterns

When using reference images for visual consistency (standard workflow), VEO generates fixed 8-second clips. To create rhythm and shot variety within this duration, the system uses clip patterns - pre-defined shot duration combinations that guarantee the math always works:

Pattern	Name	Best For
[8]	Single continuous	Establishing shots, emotional moments
[6, 2]	Long + quick	Build-up with quick ending beat
[2, 6]	Quick + long	Hook attention, then develop
[4, 4]	Two equal	Action-reaction, call-response
[4, 2, 2]	Medium + two quick	Building intensity
[2, 4, 2]	Sandwich	Bookended emphasis
[2, 2, 4]	Two quick + medium	Quick start, sustained finish
[2, 2, 2, 2]	Four quick	Montage, high energy, rapid cuts

The Showrunner selects patterns for each scene based on pacing needs, and the Screenwriter creates matching sub_shots using timestamp prompting:

[00:00-00:02] Wide establishing shot of the food truck
[00:02-00:04] Medium shot, the vendor prepares ingredients
[00:04-00:06] Close-up of sizzling grill
[00:06-00:08] Medium shot, vendor plates the food

This creates dynamic multi-shot sequences within a single clip, similar to professional editing - while ensuring shots never split across clips.

Seamless Scene Flow

Video clips are generated in parallel for speed, but the system ensures smooth transitions:

• Flow Context: Each clip receives position-aware instructions (first/middle/last) to avoid awkward pauses
• Scene Continuity: Screenwriter creates scenes that flow seamlessly:
  • First scene: May open naturally, must end with action in progress
  • Middle scenes: Must begin AND end mid-action (no pauses)
  • Last scene: Must begin mid-action, may conclude naturally

Development

# Install dev dependencies
pip install -e ".[dev]"

# Run tests
python -m pytest

# Run specific test
python -m pytest tests/test_models.py -v

# Lint and format
ruff check .
ruff format .

# Type check
mypy src/

Publishing New Versions

# 1. Bump version in pyproject.toml
# 2. Run publish script
./scripts/publish.sh

Cost Estimation

Before generating videos, the tool displays estimated costs:

• Gemini image generation: ~$0.13-0.24 per image
• VEO video generation: Check current Vertex AI pricing

Use --yes to skip the cost confirmation prompt.