参考

准备

安装ffmpeg
准备python
安装PIL
安装numpy

代码

from PIL import Image, ImageDraw, ImageFont
import argparse
import numpy as np

sample_rate = 0.4

def ascii_art(file):
    im = Image.open(file)

    # Compute letter aspect ratio
    font = ImageFont.load_default()
    # font = ImageFont.truetype("SourceCodePro-Bold.ttf", size=12)
    aspect_ratio = font.getsize("x")[0] / font.getsize("x")[1]
    new_im_size = np.array(
        [im.size[0] * sample_rate, im.size[1] * sample_rate * aspect_ratio]
    ).astype(int)

    # Downsample the image
    im = im.resize(tuple(new_im_size))

    # Keep a copy of image for color sampling
    im_color = np.array(im)

    # Convert to gray scale image
    im = im.convert("L")

    # Convert to numpy array for image manipulation
    im = np.array(im)

    # Defines all the symbols in ascending order that will form the final ascii
    symbols = np.array(list(" .-vM"))

    # Normalize minimum and maximum to [0, max_symbol_index)
    im = (im - im.min()) / (im.max() - im.min()) * (symbols.size - 1)

    # Generate the ascii art
    ascii = symbols[im.astype(int)]

    # Create an output image for drawing ascii text
    letter_size = font.getsize("x")
    im_out_size = new_im_size * letter_size
    bg_color = "black"
    im_out = Image.new("RGB", tuple(im_out_size), bg_color)
    draw = ImageDraw.Draw(im_out)

    # Draw text
    y = 0
    for i, line in enumerate(ascii):
        for j, ch in enumerate(line):
            color = tuple(im_color[i, j])  # sample color from original image
            draw.text((letter_size[0] * j, y), ch[0], fill=color, font=font)
        y += letter_size[1]  # increase y by letter height

    # Save image file
    im_out.save(file[0:10] + ".jpg")


if __name__ == "__main__":
    # parser = argparse.ArgumentParser(description="Convert any image to ascii art.")
    # parser.add_argument(
    #     "file", type=str, help="input image file",
    # )
    # args = parser.parse_args()
	# 上面的内容表示file参数的输入
    
    # 也可以直接在脚本内部定义
    for i in range(47, 60):
        file = "./img/{:0>4d}.jpg".format(i)  # 这里是定义了内部的文件路径
        ascii_art(file)

ffmpeg

# 获取图片中的每一帧
ffmpeg -i <文件路径> -r 25 -qscale:v 2 out/%04d.jpg

# 将图片生成为视频,libx264
ffmpeg -i %04d.jpg -c:v libx264 -vf fps=25 -pix_fmt yuv420p out.mp4

Python字符动画制作(PIL/FFmpeg)

参考

准备

代码

ffmpeg