Youtube Summarizer

Before processing videos, validate the environment and dependencies:

# Check if youtube-transcript-api is installed
python3 -c "import youtube_transcript_api" 2>/dev/null
if [ $? -ne 0 ]; then
    echo "⚠️  youtube-transcript-api not found"
    # Offer to install
fi

# Check Python availability
if ! command -v python3 &>/dev/null; then
    echo "❌ Python 3 is required but not installed"
    exit 1
fi

Ask the user if dependency is missing:

youtube-transcript-api is required but not installed.

Would you like to install it now?
- [ ] Yes - Install with pip (pip install youtube-transcript-api)
- [ ] No - I'll install it manually

If user selects "Yes":

pip install youtube-transcript-api

Verify installation:

python3 -c "import youtube_transcript_api; print('✅ youtube-transcript-api installed successfully')"

Main Workflow

Progress Tracking Guidelines

Throughout the workflow, display a visual progress gauge before each step to keep the user informed. The gauge format is:

echo "[████░░░░░░░░░░░░░░░░] 20% - Step 1/5: Validating URL"

Format specifications:

• 20 characters wide (use █ for filled, ░ for empty)
• Percentage increments: Step 1=20%, Step 2=40%, Step 3=60%, Step 4=80%, Step 5=100%
• Step counter showing current/total (e.g., "Step 3/5")
• Brief description of current phase

Display the initial status box before Step 1:

╔══════════════════════════════════════════════════════════════╗
║     📹  YOUTUBE SUMMARIZER - Processing Video                ║
╠══════════════════════════════════════════════════════════════╣
║ → Step 1: Validating URL                 [IN PROGRESS]       ║
║ ○ Step 2: Checking Availability                              ║
║ ○ Step 3: Extracting Transcript                              ║
║ ○ Step 4: Generating Summary                                 ║
║ ○ Step 5: Formatting Output                                  ║
╠══════════════════════════════════════════════════════════════╣
║ Progress: ██████░░░░░░░░░░░░░░░░░░░░░░░░  20%               ║
╚══════════════════════════════════════════════════════════════╝

Step 1: Validate YouTube URL

Objective: Extract video ID and validate URL format.

Supported URL Formats:

• https://www.youtube.com/watch?v=VIDEO_ID
• https://youtube.com/watch?v=VIDEO_ID
• https://youtu.be/VIDEO_ID
• https://m.youtube.com/watch?v=VIDEO_ID

Actions:

# Extract video ID using regex or URL parsing
URL="$USER_PROVIDED_URL"

# Pattern 1: youtube.com/watch?v=VIDEO_ID
if echo "$URL" | grep -qE 'youtube\.com/watch\?v='; then
    VIDEO_ID=$(echo "$URL" | sed -E 's/.*[?&]v=([^&]+).*/\1/')
# Pattern 2: youtu.be/VIDEO_ID  
elif echo "$URL" | grep -qE 'youtu\.be/'; then
    VIDEO_ID=$(echo "$URL" | sed -E 's/.*youtu\.be\/([^?]+).*/\1/')
else
    echo "❌ Invalid YouTube URL format"
    exit 1
fi

echo "📹 Video ID extracted: $VIDEO_ID"

If URL is invalid:

❌ Invalid YouTube URL

Please provide a valid YouTube URL in one of these formats:
- https://www.youtube.com/watch?v=VIDEO_ID
- https://youtu.be/VIDEO_ID

Example: https://www.youtube.com/watch?v=dQw4w9WgXcQ

Step 2: Check Video & Transcript Availability

Progress:

echo "[████████░░░░░░░░░░░░] 40% - Step 2/5: Checking Availability"

Objective: Verify video exists and transcript is accessible.

Actions:

from youtube_transcript_api import YouTubeTranscriptApi, TranscriptsDisabled, NoTranscriptFound
import sys

video_id = sys.argv[1]