yt-metrics-cli 0.2.3

CLI for YouTube channel analysis and transcript downloading

yt-metrics-cli

CLI tool that analyzes YouTube channels and downloads video transcripts, generating engagement metrics and structured reports.

Problem

YouTube Studio gives you analytics for your own channels. If you want to compare multiple channels, benchmark engagement rates, or bulk-download transcripts for research, you're stuck with manual work or fragmented browser extensions.

yt-metrics-cli solves this: point it at a list of channels, get CSV data, engagement reports, and transcript files in one command.

Quick Start

# Install
pip install yt-metrics-cli
# or
uv tool install yt-metrics-cli

# Set your API key
export YOUTUBE_API_KEY=your_key_here
# Get one at: https://console.cloud.google.com/apis/credentials

# Create channels.yml
cat > channels.yml << 'EOF'
- custom_url: "@mkbhd"
- custom_url: "@veritasium"
EOF

# Analyze
yt-metrics channels

Features

Feature	Description
Multi-channel analysis	Analyze N channels in one run
Engagement metrics	View rate, like rate, comment rate, viral detection
CSV export	Raw data with all computed fields
Text reports	Channel stats, trends, top/latest video URLs
Transcript download	Multi-language with 3-level fallback chain
API resilience	Exponential backoff on rate limits (403/429)

Usage

Analyze Channels

yt-metrics channels                        # Use defaults from .env
yt-metrics channels -c my_channels.yml     # Custom channel list
yt-metrics channels -n 100 -o ./reports    # 100 videos, custom output

Generates timestamped reports in output/<timestamp>/:

• CSV — Raw data with all metrics per video
• Channel Stats — Per-channel analysis with top 5 videos
• Engagement Trends — Cross-channel comparisons and rankings
• Best/Latest Videos — URL lists for quick access
• README — Index explaining all generated files

Download Transcripts

yt-metrics transcript -v dQw4w9WgXcQ       # Specific video
yt-metrics transcript -v abc123 -l es,en    # Language preference

Engagement Metrics

Metric	Formula	Interpretation
Engagement Rate	(likes + comments) / views * 100	Overall audience interaction
View Rate	views / subscribers * 100	Reach beyond subscriber base (>100% = viral)
Like Rate	likes / views * 100	Content satisfaction signal
Comment Rate	comments / views * 100	Discussion engagement level

Configuration

All settings can be set via environment variables or .env file:

Variable	Default	Description
YOUTUBE_API_KEY	(required)	YouTube Data API v3 key
MAX_RESULTS_PER_CHANNEL	50	Videos to fetch per channel
OUTPUT_DIR	./output	Report output directory
CHANNELS_FILE	channels.yml	Channel list file path
VIDEO_ID	—	Default video for transcript mode
TRANSCRIPT_LANGUAGES	es,en	Preferred transcript languages

Development

git clone https://github.com/mlorentedev/yt-metrics-cli.git
cd yt-metrics-cli
make install    # Create venv + install deps
make check      # Lint + typecheck + test
make build      # Full build

See CONTRIBUTING.md for details.

License

MIT

Documentation

Project-bound knowledge lives in docs/ (docs-as-code): ADRs, runbooks, troubleshooting, and lessons.