276 lines
8.9 KiB
Python
276 lines
8.9 KiB
Python
# Standard library imports remain the same
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import argparse
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import os
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import re
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import sys
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from datetime import datetime
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from yt_dlp import YoutubeDL
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from pathlib import Path
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from typing import Optional, Tuple
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# Third-party packages
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import anthropic
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# Local modules
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from . import __version__
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# Add cost estimation constants
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CLAUDE_COST_PER_1K_INPUT = 0.015 # Cost per 1K tokens for input
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CLAUDE_COST_PER_1K_OUTPUT = 0.075 # Cost per 1K tokens for output
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ESTIMATED_TOKENS_PER_CHAR = 0.25 # Rough estimate of tokens per character
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def estimate_api_cost(text: str) -> float:
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"""Estimate the cost of sending text to Claude API."""
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estimated_input_tokens = len(text) * ESTIMATED_TOKENS_PER_CHAR
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estimated_output_tokens = 1024 # max_tokens setting
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input_cost = (estimated_input_tokens / 1000) * CLAUDE_COST_PER_1K_INPUT
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output_cost = (estimated_output_tokens / 1000) * CLAUDE_COST_PER_1K_OUTPUT
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return input_cost + output_cost
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def sanitize_filename(url: str) -> str:
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"""Convert URL to safe filename, keeping video ID."""
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# Extract video ID if it's a YouTube URL
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video_id = None
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if "youtube.com" in url or "youtu.be" in url:
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if "v=" in url:
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video_id = url.split("v=")[1].split("&")[0]
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else:
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video_id = url.split("/")[-1].split("?")[0]
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timestamp = datetime.now().strftime("%Y%m%d_%H%M%S")
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return f"{timestamp}_{video_id if video_id else 'video'}"
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def ensure_transcript_dir() -> Path:
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"""Create and return path to transcript directory."""
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transcript_dir = Path.home() / ".yts" / "transcripts"
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transcript_dir.mkdir(parents=True, exist_ok=True)
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return transcript_dir
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def download_subtitles(url: str, quiet: bool = False) -> Tuple[bool, Optional[Path]]:
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"""Download subtitles from YouTube using yt-dlp."""
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try:
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ydl_opts = {
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'skip_download': True,
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'writeautomaticsub': True,
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'subtitleslangs': ['en'],
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'quiet': quiet,
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'no_warnings': quiet,
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}
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if not quiet:
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print(f"Debug: Downloading subtitles for {url}")
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with YoutubeDL(ydl_opts) as ydl:
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ydl.download([url])
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# Find the downloaded VTT file
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current_dir = Path(".")
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vtt_files = list(current_dir.glob("*.en.vtt"))
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if not quiet:
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print(f"Debug: Found VTT files: {vtt_files}")
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if not vtt_files:
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print("No VTT file found after download", file=sys.stderr)
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return False, None
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return True, vtt_files[0]
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except Exception as e:
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print(f"Error during subtitle download: {str(e)}", file=sys.stderr)
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if not quiet:
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print(f"Debug: Full exception info: {type(e).__name__}: {str(e)}")
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import traceback
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traceback.print_exc()
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return False, None
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def clean_vtt_text(text: str) -> str:
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"""Clean WebVTT text by removing timestamps, formatting tags, and metadata."""
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lines = text.split("\n")
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# Remove header lines
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while lines and (
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lines[0].startswith("WEBVTT")
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or lines[0].startswith("Kind:")
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or lines[0].startswith("Language:")
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or not lines[0].strip()
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):
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lines.pop(0)
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# Process remaining lines
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cleaned_lines = []
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for line in lines:
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if "-->" in line or not line.strip():
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continue
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line = re.sub(r"<\d{2}:\d{2}:\d{2}\.\d{3}>", "", line)
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line = re.sub(r"</?c>", "", line)
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if line.strip():
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cleaned_lines.append(line.strip())
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seen = set()
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unique_lines = [x for x in cleaned_lines if not (x in seen or seen.add(x))]
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return "\n".join(unique_lines)
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def process_file(input_path: Path, output_path: Path | None = None, quiet: bool = False) -> str:
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"""Process a single VTT file and output cleaned text."""
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try:
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with open(input_path, "r", encoding="utf-8") as f:
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content = f.read()
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cleaned_text = clean_vtt_text(content)
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if output_path:
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with open(output_path, "w", encoding="utf-8") as f:
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f.write(cleaned_text)
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if not quiet: # Changed from args.quiet to quiet
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print(f"Processed {input_path} -> {output_path}")
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return cleaned_text
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except Exception as e:
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print(f"Error processing {input_path}: {str(e)}", file=sys.stderr)
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return ""
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def save_transcript(text: str, url: str, prompt: str) -> Path:
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"""Save transcript with metadata to ~/.yts/transcripts/."""
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transcript_dir = ensure_transcript_dir()
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filename = sanitize_filename(url) + ".txt"
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filepath = transcript_dir / filename
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metadata = f"""URL: {url}
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Script Version: {__version__}
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Timestamp: {datetime.now().isoformat()}
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Claude Prompt: {prompt}
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---
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"""
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with open(filepath, "w", encoding="utf-8") as f:
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f.write(metadata + text)
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return filepath
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def cleanup_files(vtt_path: Optional[Path]):
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"""Remove downloaded files after processing."""
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try:
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if vtt_path and vtt_path.exists():
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vtt_path.unlink()
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# Also cleanup any other VTT files in current directory
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current_dir = Path(".")
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for vtt_file in current_dir.glob("*.vtt"):
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vtt_file.unlink()
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except Exception as e:
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print(f"Warning: Could not clean up temporary files: {str(e)}", file=sys.stderr)
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def get_summary_from_claude(text: str, prompt: str = "Please summarize this transcript in 500 words or less") -> str:
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"""Send text to Claude API for summarization."""
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try:
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api_key = os.environ.get("ANTHROPIC_API_KEY")
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if not api_key:
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raise ValueError("ANTHROPIC_API_KEY environment variable not set")
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client = anthropic.Anthropic()
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message = client.messages.create(
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model="claude-3-sonnet-20240229",
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max_tokens=1024,
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temperature=0,
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system="You are a helpful assistant that summarizes transcripts accurately and concisely.",
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messages=[{"role": "user", "content": f"{prompt}:\n\n{text}"}],
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)
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return message.content[0].text
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except Exception as e:
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print(f"Error getting summary from Claude: {str(e)}", file=sys.stderr)
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return ""
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def main():
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parser = argparse.ArgumentParser(description="Download YouTube subtitles and get Claude summary")
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parser.add_argument("url", help="YouTube video URL", type=str)
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parser.add_argument("-o", "--output", help="Output file for summary")
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parser.add_argument("-q", "--quiet", action="store_true", help="Suppress status messages")
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parser.add_argument("--keep-files", action="store_true", help="Don't delete downloaded VTT files")
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parser.add_argument("--transcript", action="store_true", help="Include full transcript in output")
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parser.add_argument(
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"--prompt", default="Please summarize this transcript in 500 words or less", help="Custom prompt for Claude"
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)
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parser.add_argument("-y", "--yes", action="store_true", help="Skip cost confirmation")
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args = parser.parse_args()
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# Download subtitles
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if not args.quiet:
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print("Downloading subtitles...")
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success, vtt_path = download_subtitles(args.url, args.quiet)
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if not success:
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cleanup_files(None)
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sys.exit(1)
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# Process the VTT file
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cleaned_text = process_file(vtt_path, None, args.quiet)
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# Save transcript
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transcript_path = save_transcript(cleaned_text, args.url, args.prompt)
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print(f"\nTranscript saved to: {transcript_path}")
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# Estimate and display cost
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estimated_cost = estimate_api_cost(cleaned_text)
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print(f"\nEstimated API cost: ${estimated_cost:.4f}")
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if not args.yes:
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try:
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response = input("\nDo you want to proceed with getting the summary? (y/N): ").strip().lower()
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if response != 'y':
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print("Operation cancelled by user.")
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cleanup_files(vtt_path)
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sys.exit(0)
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except (EOFError, KeyboardInterrupt):
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print("\nOperation cancelled by user.")
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cleanup_files(vtt_path)
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sys.exit(0)
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# Get summary from Claude
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if not args.quiet:
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print("\nGetting summary from Claude...")
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summary = get_summary_from_claude(cleaned_text, args.prompt)
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# Prepare output
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output = ""
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if args.transcript:
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output += "=== Full Transcript ===\n\n"
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output += cleaned_text
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output += "\n\n=== Summary ===\n\n"
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output += summary
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# Output results
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output_path = args.output
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if output_path:
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with open(output_path, "w", encoding="utf-8") as f:
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f.write(output)
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print(f"\nSummary saved to: {output_path}")
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else:
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print("\n=== Summary ===")
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print(output)
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# Cleanup downloaded files unless --keep-files is specified
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if not args.keep_files:
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cleanup_files(vtt_path)
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print(f"\nDebug: Script completed successfully at {datetime.now().isoformat()}")
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sys.exit(0)
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if __name__ == "__main__":
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main()
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