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''' |
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Usage: |
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python scripts/tools/extract_centerframe.py \ |
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--p_video assets/Samples/tshirtman.mp4 \ |
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--p_save outputs/centerframe/tshirtman.png \ |
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--orifps 18 \ |
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--targetfps 6 \ |
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--n_keyframes 17 \ |
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--length_long 512 \ |
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--length_short 512 |
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''' |
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import argparse |
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import json |
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import os |
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import random |
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import einops |
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import torchvision |
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import cv2 |
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import numpy as np |
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import torch |
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from pytorch_lightning import seed_everything |
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from torch import autocast |
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from scripts.sampling.util import ( |
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chunk, |
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create_model, |
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init_sampling, |
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load_video, |
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load_video_keyframes, |
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model_load_ckpt, |
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perform_save_locally_image, |
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perform_save_locally_video, |
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) |
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from sgm.util import append_dims |
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def extract_centerframe(p_video, p_save, orifps, targetfps, n_keyframes, length_long, length_short): |
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if n_keyframes % 2 == 0: |
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print('WARNING: n_keyframes should be odd, but got {}'.format(n_keyframes)) |
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keyframes = load_video_keyframes(p_video, orifps, targetfps, n_keyframes) |
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H, W = keyframes[0].shape[1:] |
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if H >= W: |
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h, w = length_long, length_short |
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else: |
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h, w = length_short, length_long |
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centerframe = keyframes[n_keyframes // 2, :, :, :].unsqueeze(0) |
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centerframe = torch.nn.functional.interpolate(centerframe, (h, w), mode='bilinear', align_corners=False) |
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centerframe = (centerframe + 1) / 2. |
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centerframe = torch.clamp(centerframe, 0, 1) |
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centerframe = centerframe.squeeze(0).permute(1, 2, 0).cpu().numpy()[..., ::-1] |
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os.makedirs(os.path.dirname(p_save), exist_ok=True) |
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cv2.imwrite(p_save, (centerframe * 255).astype(np.uint8)) |
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print('save to {}'.format(p_save)) |
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if __name__ == "__main__": |
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parser = argparse.ArgumentParser() |
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parser.add_argument('--p_video', type=str, default='') |
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parser.add_argument('--p_save', type=str, default='') |
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parser.add_argument('--dir_video', type=str, default='') |
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parser.add_argument('--dir_save', type=str, default='') |
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parser.add_argument('--orifps', type=int, default=18) |
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parser.add_argument('--targetfps', type=int, default=3) |
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parser.add_argument('--n_keyframes', type=int, default=9) |
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parser.add_argument('--length_short', type=int, default=384) |
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parser.add_argument('--length_long', type=int, default=576) |
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args = parser.parse_args() |
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assert (args.p_video != '' and args.p_save != '' ) or \ |
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(args.dir_video != "" and args.dir_save != "args.dir_save"), \ |
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'source video must be specified' |
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orifps = args.orifps |
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targetfps = args.targetfps |
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n_keyframes = args.n_keyframes |
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if args.p_video != '': |
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p_video = args.p_video |
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p_save = args.p_save |
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extract_centerframe(p_video, p_save, orifps, targetfps, n_keyframes, args.length_long, args.length_short) |
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else: |
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dir_video = args.dir_video |
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dir_save = args.dir_save |
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os.makedirs(dir_save, exist_ok=True) |
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subdirs = os.listdir(dir_video) |
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for subdir in subdirs: |
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subdir_video = os.path.join(dir_video, subdir) |
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if not os.path.isdir(subdir_video): |
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continue |
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subdir_save = os.path.join(dir_save, subdir) |
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os.makedirs(subdir_save, exist_ok=True) |
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files = os.listdir(subdir_video) |
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for file in files: |
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if not file.endswith('.mp4') or os.path.isdir(file): |
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continue |
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p_video = os.path.join(subdir_video, file) |
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p_save = os.path.join(subdir_save, file.replace('.mp4', '.png')) |
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print('{} -> {}'.format(p_video, p_save)) |
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extract_centerframe(p_video, p_save, orifps, targetfps, n_keyframes, args.length_long, args.length_short) |
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