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https://github.com/pacnpal/Pac-cogs.git
synced 2025-12-20 19:01:06 -05:00
fix imports
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pacnpal
309
videoarchiver/utils/video_downloader.py
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309
videoarchiver/utils/video_downloader.py
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@@ -0,0 +1,309 @@
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"""Video download and processing utilities"""
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import os
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import logging
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import asyncio
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import ffmpeg
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import yt_dlp
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from concurrent.futures import ThreadPoolExecutor
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from typing import Dict, List, Optional, Tuple
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from pathlib import Path
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from ..ffmpeg.ffmpeg_manager import FFmpegManager
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from .exceptions import VideoVerificationError
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from .file_ops import secure_delete_file
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from .path_manager import temp_path_context
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logger = logging.getLogger("VideoArchiver")
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class VideoDownloader:
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MAX_RETRIES = 3
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RETRY_DELAY = 5 # seconds
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FILE_OP_RETRIES = 3
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FILE_OP_RETRY_DELAY = 1 # seconds
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def __init__(
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self,
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download_path: str,
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video_format: str,
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max_quality: int,
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max_file_size: int,
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enabled_sites: Optional[List[str]] = None,
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concurrent_downloads: int = 3,
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):
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self.download_path = download_path
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self.video_format = video_format
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self.max_quality = max_quality
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self.max_file_size = max_file_size
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self.enabled_sites = enabled_sites
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self.url_patterns = self._get_url_patterns()
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# Initialize FFmpeg manager
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self.ffmpeg_mgr = FFmpegManager()
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# Create thread pool for this instance
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self.download_pool = ThreadPoolExecutor(
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max_workers=max(1, min(5, concurrent_downloads)),
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thread_name_prefix="videoarchiver_download"
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)
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# Track active downloads for cleanup
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self.active_downloads: Dict[str, str] = {}
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self._downloads_lock = asyncio.Lock()
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# Configure yt-dlp options
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self.ydl_opts = {
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"format": f"bestvideo[height<={max_quality}]+bestaudio/best[height<={max_quality}]",
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"outtmpl": "%(title)s.%(ext)s", # Base filename only, path added later
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"merge_output_format": video_format,
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"quiet": True,
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"no_warnings": True,
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"extract_flat": False,
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"concurrent_fragment_downloads": concurrent_downloads,
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"retries": self.MAX_RETRIES,
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"fragment_retries": self.MAX_RETRIES,
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"file_access_retries": self.FILE_OP_RETRIES,
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"extractor_retries": self.MAX_RETRIES,
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"postprocessor_hooks": [self._check_file_size],
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"progress_hooks": [self._progress_hook],
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"ffmpeg_location": self.ffmpeg_mgr.get_ffmpeg_path(),
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}
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def __del__(self):
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"""Ensure thread pool is shutdown and files are cleaned up"""
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try:
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# Cancel all active downloads
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for file_path in self.active_downloads.values():
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try:
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secure_delete_file(file_path)
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except Exception as e:
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logger.error(f"Error deleting file during cleanup: {str(e)}")
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self.active_downloads.clear()
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# Shutdown thread pool
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if hasattr(self, 'download_pool'):
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self.download_pool.shutdown(wait=True)
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except Exception as e:
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logger.error(f"Error during VideoDownloader cleanup: {str(e)}")
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def _get_url_patterns(self) -> List[str]:
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"""Get URL patterns for supported sites"""
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patterns = []
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try:
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with yt_dlp.YoutubeDL() as ydl:
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for extractor in ydl._ies:
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if hasattr(extractor, "_VALID_URL") and extractor._VALID_URL:
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if not self.enabled_sites or any(
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site.lower() in extractor.IE_NAME.lower()
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for site in self.enabled_sites
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):
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patterns.append(extractor._VALID_URL)
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except Exception as e:
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logger.error(f"Error getting URL patterns: {str(e)}")
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return patterns
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def _check_file_size(self, info):
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"""Check if file size is within limits"""
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if info.get("filepath") and os.path.exists(info["filepath"]):
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try:
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size = os.path.getsize(info["filepath"])
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if size > (self.max_file_size * 1024 * 1024):
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logger.info(
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f"File exceeds size limit, will compress: {info['filepath']}"
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)
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except OSError as e:
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logger.error(f"Error checking file size: {str(e)}")
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def _progress_hook(self, d):
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"""Handle download progress"""
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if d["status"] == "finished":
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logger.info(f"Download completed: {d['filename']}")
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def _verify_video_file(self, file_path: str) -> bool:
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"""Verify video file integrity"""
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try:
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probe = ffmpeg.probe(file_path)
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# Check if file has video stream
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video_streams = [s for s in probe['streams'] if s['codec_type'] == 'video']
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if not video_streams:
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raise VideoVerificationError("No video streams found")
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# Check if duration is valid
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duration = float(probe['format'].get('duration', 0))
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if duration <= 0:
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raise VideoVerificationError("Invalid video duration")
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# Check if file is readable
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with open(file_path, 'rb') as f:
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f.seek(0, 2) # Seek to end
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if f.tell() == 0:
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raise VideoVerificationError("Empty file")
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return True
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except Exception as e:
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logger.error(f"Error verifying video file {file_path}: {e}")
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return False
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async def _safe_download(self, url: str, temp_dir: str) -> Tuple[bool, str, str]:
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"""Safely download video with retries"""
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for attempt in range(self.MAX_RETRIES):
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try:
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ydl_opts = self.ydl_opts.copy()
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ydl_opts['outtmpl'] = os.path.join(temp_dir, ydl_opts['outtmpl'])
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with yt_dlp.YoutubeDL(ydl_opts) as ydl:
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info = await asyncio.get_event_loop().run_in_executor(
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self.download_pool,
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lambda: ydl.extract_info(url, download=True)
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)
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if info is None:
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raise Exception("Failed to extract video information")
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file_path = os.path.join(temp_dir, ydl.prepare_filename(info))
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if not os.path.exists(file_path):
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raise FileNotFoundError("Download completed but file not found")
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if not self._verify_video_file(file_path):
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raise VideoVerificationError("Downloaded file is not a valid video")
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return True, file_path, ""
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except Exception as e:
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logger.error(f"Download attempt {attempt + 1} failed: {str(e)}")
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if attempt < self.MAX_RETRIES - 1:
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await asyncio.sleep(self.RETRY_DELAY * (attempt + 1)) # Exponential backoff
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else:
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return False, "", f"All download attempts failed: {str(e)}"
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async def download_video(self, url: str) -> Tuple[bool, str, str]:
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"""Download and process a video"""
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original_file = None
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compressed_file = None
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temp_dir = None
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try:
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# Create temporary directory for download
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with temp_path_context() as temp_dir:
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# Download the video
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success, file_path, error = await self._safe_download(url, temp_dir)
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if not success:
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return False, "", error
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original_file = file_path
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# Track this download
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async with self._downloads_lock:
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self.active_downloads[url] = original_file
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# Check file size and compress if needed
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file_size = os.path.getsize(original_file)
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if file_size > (self.max_file_size * 1024 * 1024):
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logger.info(f"Compressing video: {original_file}")
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try:
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# Get optimal compression parameters
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params = self.ffmpeg_mgr.get_compression_params(
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original_file, self.max_file_size
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)
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compressed_file = os.path.join(
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self.download_path,
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f"compressed_{os.path.basename(original_file)}"
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)
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# Configure ffmpeg with optimal parameters
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stream = ffmpeg.input(original_file)
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stream = ffmpeg.output(stream, compressed_file, **params)
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# Run compression in executor
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await asyncio.get_event_loop().run_in_executor(
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self.download_pool,
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lambda: ffmpeg.run(
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stream,
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capture_stdout=True,
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capture_stderr=True,
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overwrite_output=True,
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),
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)
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if not os.path.exists(compressed_file):
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raise FileNotFoundError("Compression completed but file not found")
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# Verify compressed file
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if not self._verify_video_file(compressed_file):
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raise VideoVerificationError("Compressed file is not a valid video")
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compressed_size = os.path.getsize(compressed_file)
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if compressed_size <= (self.max_file_size * 1024 * 1024):
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await self._safe_delete_file(original_file)
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return True, compressed_file, ""
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else:
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await self._safe_delete_file(compressed_file)
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return False, "", "Failed to compress to target size"
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except Exception as e:
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if compressed_file and os.path.exists(compressed_file):
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await self._safe_delete_file(compressed_file)
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logger.error(f"Compression error: {str(e)}")
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return False, "", f"Compression error: {str(e)}"
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else:
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# Move file to final location
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final_path = os.path.join(self.download_path, os.path.basename(original_file))
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# Use safe move with retries
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success = await self._safe_move_file(original_file, final_path)
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if not success:
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return False, "", "Failed to move file to final location"
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return True, final_path, ""
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except Exception as e:
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logger.error(f"Download error: {str(e)}")
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return False, "", str(e)
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finally:
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# Clean up
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async with self._downloads_lock:
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self.active_downloads.pop(url, None)
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try:
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if original_file and os.path.exists(original_file):
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await self._safe_delete_file(original_file)
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if compressed_file and os.path.exists(compressed_file) and not compressed_file.startswith(self.download_path):
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await self._safe_delete_file(compressed_file)
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except Exception as e:
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logger.error(f"Error during file cleanup: {str(e)}")
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async def _safe_delete_file(self, file_path: str) -> bool:
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"""Safely delete a file with retries"""
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for attempt in range(self.FILE_OP_RETRIES):
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try:
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if secure_delete_file(file_path):
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return True
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await asyncio.sleep(self.FILE_OP_RETRY_DELAY * (attempt + 1))
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except Exception as e:
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logger.error(f"Delete attempt {attempt + 1} failed: {str(e)}")
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if attempt == self.FILE_OP_RETRIES - 1:
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return False
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await asyncio.sleep(self.FILE_OP_RETRY_DELAY * (attempt + 1))
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return False
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async def _safe_move_file(self, src: str, dst: str) -> bool:
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"""Safely move a file with retries"""
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for attempt in range(self.FILE_OP_RETRIES):
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try:
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# Ensure destination directory exists
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os.makedirs(os.path.dirname(dst), exist_ok=True)
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# Try to move the file
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shutil.move(src, dst)
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return True
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except Exception as e:
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logger.error(f"Move attempt {attempt + 1} failed: {str(e)}")
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if attempt == self.FILE_OP_RETRIES - 1:
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return False
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await asyncio.sleep(self.FILE_OP_RETRY_DELAY * (attempt + 1))
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return False
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def is_supported_url(self, url: str) -> bool:
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"""Check if URL is supported"""
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try:
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with yt_dlp.YoutubeDL() as ydl:
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# Try to extract info without downloading
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ie = ydl.extract_info(url, download=False, process=False)
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return ie is not None
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except Exception as e:
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logger.error(f"Error checking URL support: {str(e)}")
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return False
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