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| import os | |
| import pdb | |
| import torch | |
| import numpy as np | |
| import imageio | |
| import cv2 | |
| import imageio.v3 as iio | |
| VIDEO_TYPE_LIST = {'.avi','.mp4','.gif','.AVI','.MP4','.GIF'} | |
| def encodeffmpeg(inputs, frame_rate, output, format="png"): | |
| """output: need video_name""" | |
| assert ( | |
| os.path.splitext(output)[-1] in VIDEO_TYPE_LIST | |
| ), "output is the format of video, e.g., mp4" | |
| assert os.path.isdir(inputs), "input dir is NOT file format" | |
| inputs = inputs[:-1] if inputs[-1] == "/" else inputs | |
| output = os.path.abspath(output) | |
| cmd = ( | |
| f"ffmpeg -r {frame_rate} -pattern_type glob -i '{inputs}/*.{format}' " | |
| + f'-vcodec libx264 -crf 10 -vf "pad=ceil(iw/2)*2:ceil(ih/2)*2" ' | |
| + f"-pix_fmt yuv420p {output} > /dev/null 2>&1" | |
| ) | |
| print(cmd) | |
| output_dir = os.path.dirname(output) | |
| if os.path.exists(output): | |
| os.remove(output) | |
| os.makedirs(output_dir, exist_ok=True) | |
| print("encoding imgs to video.....") | |
| os.system(cmd) | |
| print("video done!") | |
| def images_to_video(images, output_path, fps, gradio_codec: bool, verbose=False, bitrate="2M"): | |
| os.makedirs(os.path.dirname(output_path), exist_ok=True) | |
| frames = [] | |
| for i in range(images.shape[0]): | |
| if isinstance(images, torch.Tensor): | |
| frame = (images[i].permute(1, 2, 0).cpu().numpy() * 255).astype(np.uint8) | |
| assert frame.shape[0] == images.shape[2] and frame.shape[1] == images.shape[3], \ | |
| f"Frame shape mismatch: {frame.shape} vs {images.shape}" | |
| assert frame.min() >= 0 and frame.max() <= 255, \ | |
| f"Frame value out of range: {frame.min()} ~ {frame.max()}" | |
| else: | |
| frame = images[i] | |
| width, height = frame.shape[1], frame.shape[0] | |
| # reshape to limit the export time | |
| # if width > 1200 or height > 1200 or images.shape[0] > 200: | |
| # frames.append(cv2.resize(frame, (width // 2, height // 2))) | |
| # else: | |
| frames.append(frame) | |
| # limit the frames directly @NOTE huggingface only！ | |
| frames = frames[:200] | |
| frames = np.stack(frames) | |
| print("start saving {} using imageio.v3 .".format(output_path)) | |
| iio.imwrite(output_path,frames,fps=fps,codec="libx264",pixelformat="yuv420p",bitrate=bitrate, macro_block_size=32) | |
| print("saved {} using imageio.v3 .".format(output_path)) |