AI-video-lifeplan-demo/backend/media_fetcher.py

72 lines
2.3 KiB
Python

"""
Media asset fetcher using Pexels API
This module fetches B-Roll footage based on keywords extracted from:
- PDF content
- Video transcription
- Generated script
"""
import os
import requests
from typing import Dict, Any, List, Optional
class MediaFetcher:
"""Fetch B-Roll videos from Pexels API"""
def __init__(self, api_key: Optional[str] = None):
self.api_key = api_key or os.getenv("PEXELS_API_KEY")
if not self.api_key:
raise ValueError("PEXELS_API_KEY not found in environment")
self.base_url = "https://api.pexels.com/videos/search"
def fetch_broll(self, keywords: List[str], max_per_keyword: int = 3) -> Dict[str, List[str]]:
"""
Fetch B-Roll videos based on keywords
Args:
keywords: List of Japanese keywords (will be translated to English)
max_per_keyword: Maximum videos to fetch per keyword
Returns:
Dictionary mapping keywords to video URLs
"""
# TODO: Implement Pexels API integration
# 1. Translate Japanese keywords to English (using Gemini)
# 2. Search Pexels for each keyword
# 3. Download videos to assets/1_processed/broll/
# 4. Return local file paths
raise NotImplementedError("B-Roll fetching not yet implemented")
def _translate_keyword(self, japanese_keyword: str) -> str:
"""Translate Japanese keyword to English using Gemini"""
# TODO: Implement translation
# Use Gemini Pro for accurate translation
# Cache translations to avoid repeated API calls
return japanese_keyword
def _download_video(self, url: str, output_path: str) -> str:
"""Download video from URL"""
# TODO: Implement video download
# Use requests to download
# Show progress bar
# Validate video format
return output_path
def fetch_broll(script: Dict[str, Any]) -> Dict[str, Any]:
"""Convenience function for fetching B-Roll assets"""
# Extract keywords from script
keywords = []
for segment in script.get("segments", []):
# TODO: Extract keywords from segment text
pass
fetcher = MediaFetcher()
return fetcher.fetch_broll(keywords)