import io from contextlib import redirect_stderr import os from collections import Counter import cv2 import glob import re import subprocess import argparse parser = argparse.ArgumentParser() parser.add_argument("-i", "--input_dir", default="./", help="Input vid directory") parser.add_argument("-o", "--output_dir", default="./out", help="Output vid directory") parser.add_argument("-d", "--debug", default=False, action="store_true", help="for debugging. short output") args = parser.parse_args() def resizeCropInfo(key, cropPos, frame_width, frame_height): def _IsOutOfBound(_cropPos): w, h, x, y = _cropPos if (w + x) > frame_width or (h + y) > frame_height: return True if not all([a >= 0 for a in [x, y]]): return True if not all([a >= 0 for a in [w, h]]): return True w, h, x, y = cropPos # Left (Expand width) if key == ord('j') or key == ord('J'): x -= 1 w += 2 # Right (Shrink width) elif key == ord('l') or key == ord('L'): x += 1 w -= 2 # Up (Expand height) elif key == ord('i') or key == ord('I'): y -= 1 h += 2 # Down (Shrink height) elif key == ord('k') or key == ord('K'): y += 1 h -= 2 # Num 4 (Move left) elif key == ord('a') or key == ord('A'): x -= 1 w -= 1 # Num 6 (Move right) elif key == ord('d') or key == ord('D'): w += 1 x += 1 # Num 8 (Move upward) elif key == ord('w') or key == ord('W'): h -= 1 y -= 1 # Num 2 (Move downward) elif key == ord('s') or key == ord('S'): h += 1 y += 1 _cropPos = w, h, x, y if not _IsOutOfBound(_cropPos): cropPos = _cropPos print("Current Crop Info : ", end="") print(cropPos, end="\r") return cropPos def main(): vid_types = ('*.avi', '*.mov', '*.mp4', '*.mxf') vid_grapped = [] for types in vid_types : vid_grapped += sorted(glob.glob(os.path.join(args.input_dir, types))) # _scale = args.scale.split(":") # if len(_scale) != 2 : # print("Invalid target scale : ", args.scale) # return # target_width, target_height = [int(x) for x in _scale] #-------------------------------------------------------- f = io.StringIO() #-------------------------------------------------------- for fpath in vid_grapped: vid_name = os.path.basename(fpath)[:-4] print("File to detect crop: ", fpath) p = subprocess.Popen(["ffmpeg", "-ss", "10", "-i", fpath, "-vf", "cropdetect=limit=38", "-vframes", "3000", "-f", "null", "out.null"], stdout=subprocess.PIPE, stderr=subprocess.PIPE) infos = p.stderr.read().decode('utf-8') # print (infos) allCrops = re.findall("crop=\S+", infos) # print ("Crop Infos : ") # print (allCrops) mostCommonCrop = Counter(allCrops).most_common(1) print("most common detected crop info: %s" % mostCommonCrop) global crop crop = mostCommonCrop[0][0] cropPos = crop.split(":") # Delete "crop=" in list cropPos cropPos[0] = cropPos[0][5:] cropPos = [int(x) for x in cropPos] with redirect_stderr(f): # Capture vid, Get Vid info capture = cv2.VideoCapture(fpath) frame_width = capture.get(cv2.CAP_PROP_FRAME_WIDTH) frame_height = capture.get(cv2.CAP_PROP_FRAME_HEIGHT) fps = capture.get(cv2.CAP_PROP_FPS) frame_pos = 0 frame_count = 0 target_width, target_height = (frame_width, frame_height) if not ((target_width > 0) and (target_height > 0)): print("Invalid target scale : ", target_width, target_height) return else : print("Input dir :", args.input_dir) print("Target scale: ", target_width, target_height) key = None while True: key = cv2.waitKeyEx(10) if key > 0 : # 13 == Enter key ASCII Code if key == 13: break # Pause elif key == ord('p') or key == ord('P'): key = cv2.waitKeyEx() # Replay elif key == ord('r') or key == ord('R'): capture = cv2.VideoCapture(fpath) continue # Move Forward (10s) elif key == ord('e') or key == ord('E'): capture.set(cv2.CAP_PROP_POS_FRAMES, frame_pos + (fps * 10)) # Move Backward (10s) elif key == ord('q') or key == ord('Q'): capture.set(cv2.CAP_PROP_POS_FRAMES, frame_pos - (fps * 10)) cropPos = resizeCropInfo(key, cropPos, frame_width, frame_height) frame_pos = capture.get(cv2.CAP_PROP_POS_FRAMES) frame_count = capture.get(cv2.CAP_PROP_FRAME_COUNT) if(frame_pos >= frame_count): break ret, frame = capture.read() cv2.rectangle(frame, (cropPos[2], cropPos[3]), (cropPos[2] + cropPos[0], cropPos[3] + cropPos[1]), (0, 0, 255), thickness=1, lineType=cv2.LINE_8) # cv2.rectangle(frame, (4,43), (717,431), (0, 0, 255), thickness=1, lineType=cv2.LINE_8) cv2.imshow(f'{vid_name}', frame) capture.release() cv2.destroyAllWindows() # ffmpeg filter args crop_arg = f"crop={cropPos[0]}:{cropPos[1]}:{cropPos[2]}:{cropPos[3]}," print(f"[CropInfo] (W : {cropPos[0]}), (H : {cropPos[1]}), (X : {cropPos[2]}), (Y : {cropPos[3]})") target_ratio = target_width / target_height crop_ratio = cropPos[0] / cropPos[1] if target_ratio < crop_ratio: tmp_height = target_width * (cropPos[1] / cropPos[0]) scale_arg = f"scale=w={target_width}:h={tmp_height}," else: tmp_width = target_height * (cropPos[0] / cropPos[1]) scale_arg = f"scale=w={tmp_width}:h={target_height}," pad_arg = f"pad={target_width}:{target_height}:(ow-iw)/2:(ih-oh)/2," print("Encoding \"%s\" ..." % vid_name) if not os.path.exists(args.output_dir) : os.mkdir(args.output_dir) print(f'{args.output_dir} created') output_path = os.path.join(args.output_dir, f"{vid_name}_cropped.mp4") if args.debug: # for Debug p = subprocess.Popen(["ffmpeg", "-t", "15", "-ss", "30", "-i", fpath, "-vf", crop_arg + scale_arg + pad_arg + "setsar=sar=1", "-y", "-pix_fmt", "yuv420p", "-c:v", "libx264", "-crf", "15", "-preset", "medium", "-loglevel", "error", f"{output_path}"]) else: p = subprocess.Popen(["ffmpeg", "-i", fpath, "-vf", crop_arg + scale_arg + pad_arg + "setsar=sar=1", "-y", "-pix_fmt", "yuv420p", "-c:v", "libx264", "-crf", "15", "-preset", "medium", "-loglevel", "error", f"{output_path}"]) print("Encoding Done.") # debugging # return if __name__ == "__main__": main()