336 lines
13 KiB
Python
336 lines
13 KiB
Python
import os
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import sys
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import glob
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import cv2
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import argparse
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import shutil
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import time
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from pathlib import Path
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from typing import List, Tuple, Optional
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class MediaGrader:
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def __init__(self, directory: str, seek_frames: int = 30, snap_to_iframe: bool = False):
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self.directory = Path(directory)
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self.seek_frames = seek_frames
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self.snap_to_iframe = snap_to_iframe
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self.current_index = 0
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self.playback_speed = 1.0
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self.media_files = []
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self.current_cap = None
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self.is_playing = True
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self.current_frame = 0
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self.total_frames = 0
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# Key repeat tracking
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self.last_key_time = 0
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self.key_repeat_delay = 0.1 # 100ms between repeats
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self.last_key = None
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# Seeking modes
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self.fine_seek_frames = 1 # Frame-by-frame
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self.coarse_seek_frames = self.seek_frames # User-configurable
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self.fast_seek_frames = self.seek_frames * 5 # 5x the normal seek
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# Supported media extensions
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self.extensions = ['*.png', '*.jpg', '*.jpeg', '*.gif', '*.mp4', '*.avi', '*.mov', '*.mkv']
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# Create grade directories
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for i in range(1, 6):
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grade_dir = self.directory / str(i)
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grade_dir.mkdir(exist_ok=True)
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def find_media_files(self) -> List[Path]:
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"""Find all media files recursively in the directory"""
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media_files = []
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for ext in self.extensions:
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pattern = str(self.directory / "**" / ext)
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files = glob.glob(pattern, recursive=True)
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media_files.extend([Path(f) for f in files])
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# Filter out files already in grade directories
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filtered_files = []
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for file in media_files:
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# Check if file is not in a grade directory (1-5)
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if not any(part in ['1', '2', '3', '4', '5'] for part in file.parts):
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filtered_files.append(file)
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return sorted(filtered_files)
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def is_video(self, file_path: Path) -> bool:
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"""Check if file is a video"""
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return file_path.suffix.lower() in ['.mp4', '.avi', '.mov', '.mkv', '.gif']
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def load_media(self, file_path: Path) -> bool:
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"""Load media file for display"""
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if self.current_cap:
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self.current_cap.release()
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if self.is_video(file_path):
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self.current_cap = cv2.VideoCapture(str(file_path))
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if not self.current_cap.isOpened():
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return False
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self.total_frames = int(self.current_cap.get(cv2.CAP_PROP_FRAME_COUNT))
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self.current_frame = 0
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else:
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# For images, we'll just display them
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self.current_cap = None
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self.total_frames = 1
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self.current_frame = 0
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return True
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def display_media(self, file_path: Path) -> Optional[Tuple[bool, any]]:
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"""Display current media file"""
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if self.is_video(file_path):
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if not self.current_cap:
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return None
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ret, frame = self.current_cap.read()
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if not ret:
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return False, None
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self.current_frame = int(self.current_cap.get(cv2.CAP_PROP_POS_FRAMES))
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return True, frame
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else:
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# Display image
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frame = cv2.imread(str(file_path))
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if frame is None:
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return False, None
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return True, frame
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def auto_resize_window(self, frame):
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"""Auto-resize window to fit media while respecting screen limits"""
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height, width = frame.shape[:2]
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# Get screen size (approximate - OpenCV doesn't have direct access)
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# Use reasonable defaults for common screen sizes
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max_width = 1200
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max_height = 800
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# Calculate scaling factor to fit within max dimensions
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scale_w = max_width / width if width > max_width else 1.0
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scale_h = max_height / height if height > max_height else 1.0
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scale = min(scale_w, scale_h)
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# Don't scale up small images too much
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if scale > 2.0:
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scale = 2.0
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new_width = int(width * scale)
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new_height = int(height * scale)
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cv2.resizeWindow('Media Grader', new_width, new_height)
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def seek_video(self, frames_delta: int):
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"""Seek video by specified number of frames"""
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if not self.current_cap or not self.is_video(self.media_files[self.current_index]):
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return
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new_frame = max(0, min(self.current_frame + frames_delta, self.total_frames - 1))
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if self.snap_to_iframe and frames_delta < 0:
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# Find previous I-frame (approximation)
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new_frame = max(0, new_frame - (new_frame % 30))
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self.current_cap.set(cv2.CAP_PROP_POS_FRAMES, new_frame)
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self.current_frame = new_frame
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def handle_seeking_key(self, key: int) -> bool:
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"""Handle seeking keys with different granularities. Returns True if key was handled."""
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current_time = time.time()
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# Determine seek amount based on modifier keys and timing
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seek_amount = 0
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if key == 81: # Left arrow
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# Use different seek amounts based on key repeat pattern
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if self.last_key == key and (current_time - self.last_key_time) < 0.5:
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# Fast repeat - use larger seek
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seek_amount = -self.fast_seek_frames
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else:
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# Normal seek
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seek_amount = -self.coarse_seek_frames
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elif key == 83: # Right arrow
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if self.last_key == key and (current_time - self.last_key_time) < 0.5:
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seek_amount = self.fast_seek_frames
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else:
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seek_amount = self.coarse_seek_frames
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elif key == ord(','): # Comma - fine seek backward
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seek_amount = -self.fine_seek_frames
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elif key == ord('.'): # Period - fine seek forward
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seek_amount = self.fine_seek_frames
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elif key == ord('['): # Left bracket - medium seek backward
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seek_amount = -self.coarse_seek_frames
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elif key == ord(']'): # Right bracket - medium seek forward
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seek_amount = self.coarse_seek_frames
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else:
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return False
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self.seek_video(seek_amount)
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self.last_key = key
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self.last_key_time = current_time
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return True
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def grade_media(self, grade: int):
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"""Move current media file to grade directory"""
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if not self.media_files or grade < 1 or grade > 5:
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return
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current_file = self.media_files[self.current_index]
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grade_dir = self.directory / str(grade)
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destination = grade_dir / current_file.name
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# Handle name conflicts
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counter = 1
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while destination.exists():
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stem = current_file.stem
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suffix = current_file.suffix
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destination = grade_dir / f"{stem}_{counter}{suffix}"
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counter += 1
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try:
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shutil.move(str(current_file), str(destination))
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print(f"Moved {current_file.name} to grade {grade}")
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# Remove from current list
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self.media_files.pop(self.current_index)
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# Adjust current index
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if self.current_index >= len(self.media_files):
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self.current_index = 0
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if not self.media_files:
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print("No more media files to grade!")
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return False
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except Exception as e:
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print(f"Error moving file: {e}")
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return True
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def run(self):
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"""Main grading loop"""
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self.media_files = self.find_media_files()
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if not self.media_files:
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print("No media files found in directory!")
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return
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print(f"Found {len(self.media_files)} media files")
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print("Controls:")
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print(" Space: Pause/Play")
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print(" Left/Right: Seek backward/forward (accelerates on repeat)")
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print(" , / . : Frame-by-frame seek (fine control)")
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print(" [ / ] : Normal seek (medium control)")
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print(" A/D: Decrease/Increase playback speed")
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print(" 1-5: Grade and move file")
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print(" N: Next file")
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print(" P: Previous file")
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print(" Q/ESC: Quit")
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cv2.namedWindow('Media Grader', cv2.WINDOW_NORMAL)
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while self.media_files and self.current_index < len(self.media_files):
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current_file = self.media_files[self.current_index]
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if not self.load_media(current_file):
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print(f"Could not load {current_file}")
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self.current_index += 1
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continue
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window_title = f"Media Grader - {current_file.name} ({self.current_index + 1}/{len(self.media_files)})"
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cv2.setWindowTitle('Media Grader', window_title)
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delay = int(33 / self.playback_speed) if self.is_video(current_file) else 30
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window_resized = False
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while True:
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result = self.display_media(current_file)
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if result is None or not result[0]:
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break
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ret, frame = result
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# Auto-resize window on first frame
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if not window_resized:
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self.auto_resize_window(frame)
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window_resized = True
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# Add info overlay
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info_text = f"Speed: {self.playback_speed:.1f}x | Frame: {self.current_frame}/{self.total_frames} | File: {self.current_index + 1}/{len(self.media_files)}"
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help_text = "Seek: ←→ (accel) ,. (fine) [] (med) | A/D speed | 1-5 grade | Space pause | Q quit"
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# White background for text visibility
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cv2.putText(frame, info_text, (10, 30), cv2.FONT_HERSHEY_SIMPLEX, 0.7, (255, 255, 255), 2)
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cv2.putText(frame, info_text, (10, 30), cv2.FONT_HERSHEY_SIMPLEX, 0.7, (0, 0, 0), 1)
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cv2.putText(frame, help_text, (10, 60), cv2.FONT_HERSHEY_SIMPLEX, 0.5, (255, 255, 255), 2)
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cv2.putText(frame, help_text, (10, 60), cv2.FONT_HERSHEY_SIMPLEX, 0.5, (0, 0, 0), 1)
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cv2.imshow('Media Grader', frame)
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key = cv2.waitKey(delay) & 0xFF
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if key == ord('q') or key == 27: # Q or ESC
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return
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elif key == ord(' '): # Space - pause/play
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self.is_playing = not self.is_playing
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delay = int(33 / self.playback_speed) if self.is_playing and self.is_video(current_file) else 30
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elif key == ord('a'): # A - decrease speed
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self.playback_speed = max(0.1, self.playback_speed - 0.1)
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delay = int(33 / self.playback_speed) if self.is_video(current_file) else 30
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elif key == ord('d'): # D - increase speed
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self.playback_speed = min(5.0, self.playback_speed + 0.1)
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delay = int(33 / self.playback_speed) if self.is_video(current_file) else 30
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elif self.handle_seeking_key(key):
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# Seeking was handled
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pass
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elif key == ord('n'): # Next file
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break
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elif key == ord('p'): # Previous file
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self.current_index = max(0, self.current_index - 1)
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break
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elif key in [ord('1'), ord('2'), ord('3'), ord('4'), ord('5')]: # Grade
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grade = int(chr(key))
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if not self.grade_media(grade):
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return
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break
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if not self.is_playing and not self.is_video(current_file):
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# For images, wait indefinitely when paused
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continue
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if key not in [ord('p')]: # Don't increment for previous
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self.current_index += 1
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if self.current_cap:
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self.current_cap.release()
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cv2.destroyAllWindows()
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print("Grading session complete!")
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def main():
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parser = argparse.ArgumentParser(description='Media Grader - Grade media files by moving them to numbered folders')
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parser.add_argument('directory', nargs='?', default='.', help='Directory to scan for media files (default: current directory)')
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parser.add_argument('--seek-frames', type=int, default=30, help='Number of frames to seek when using arrow keys (default: 30)')
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parser.add_argument('--snap-to-iframe', action='store_true', help='Snap to I-frames when seeking backward for better performance')
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args = parser.parse_args()
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if not os.path.isdir(args.directory):
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print(f"Error: {args.directory} is not a valid directory")
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sys.exit(1)
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grader = MediaGrader(args.directory, args.seek_frames, args.snap_to_iframe)
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try:
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grader.run()
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except KeyboardInterrupt:
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print("\nGrading session interrupted")
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except Exception as e:
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print(f"Error: {e}")
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sys.exit(1)
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if __name__ == "__main__":
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main()
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