话不多说先上图:
实现图中效果的步骤如下:
1.视频转帧图(Video to Frames)
2.帧图转字符画(Frames to ASCII)
3.字符画转图片(ASCII to imgs)
4.图片合成视频 (imgs to ASCII Video)
1.视频转帧图(Video to Frames)
安装opencv
pip install opencv-python
视频抽帧成一张张图片:
def video_to_frames(video_path, output_folder, frame_interval=1):
"""
将视频抽帧并保存为图片文件。
:param video_path: 视频文件的路径。
:param output_folder: 保存图片帧的文件夹路径。
:param frame_interval: 每隔多少帧抽取一帧,默认为1(即抽取每一帧)。
"""
# 打开视频文件
cap = cv2.VideoCapture(video_path)
if not cap.isOpened():
raise IOError("无法打开视频文件")
frame_count = 0
saved_frame_count = 0
while True:
ret, frame = cap.read()
if not ret:
break
if frame_count % frame_interval == 0:
# 保存帧
output_path = os.path.join(output_folder, f"frame_{saved_frame_count:04d}.jpg")
cv2.imwrite(output_path, frame)
saved_frame_count += 1
frame_count += 1
cap.release()
2.帧图转字符画(Frames to ASCII)
def image_to_colored_ascii(image_path, output_width, output_height):
resized_image = resize_image(image_path, output_width, output_height)
ascii_image = []
ascii_image_chars = []
ascii_image_colors=[]
for y in range(output_height):
row = ""
for x in range(output_width):
color = resized_image.getpixel((x, y))
gray_value = sum(color) // 3
char_index = int(gray_value / 255 * (len(colored_ascii_chars) - 1))
if char_index >= len(colored_ascii_chars):
char_index = len(colored_ascii_chars) - 1
row += f"\033[38;2;{color[0]};{color[1]};{color[2]}m{colored_ascii_chars[char_index]}"
ascii_image_chars.append(colored_ascii_chars[char_index])
ascii_image_colors.append((color[0], color[1], color[2]))
ascii_image.append(row)
return "\n".join(ascii_image), ascii_image_chars, ascii_image_colors
3.字符画转图片(ASCII to imgs)
# 将 ASCII 艺术图像存储为图片
def save_colored_ascii_image_as_picture(ascii_image_chars, ascii_image_colors, font_path, font_size, output_path):
image = Image.new('RGB', ((output_width * font_size), (output_height * font_size)), color='black')
draw = ImageDraw.Draw(image)
font = ImageFont.truetype(font_path, font_size)
for i in range(output_height):
for j in range(output_width):
draw.text((j * font_size, i * font_size), ascii_image_chars[i*output_width+j], font=font, fill=ascii_image_colors[i*output_width+j])
image.save(output_path)
4.图片合成视频 (imgs to ASCII Video)
def process_images_in_directory(input_dir, output_dir, output_width, output_height, font_path, font_size):
if not os.path.exists(output_dir):
os.makedirs(output_dir)
# 支持的图片格式列表
supported_extensions = ('.jpg', '.jpeg', '.png', '.bmp', '.gif')
index = 0
# 遍历目录中的所有文件
for filename in os.listdir(input_dir):
if filename.lower().endswith(supported_extensions):
input_path = os.path.join(input_dir, filename)
output_path = os.path.join(output_dir, "ss_00" + str(index) + ".jpg")
index += 1
# 将图像转换为彩色ASCII字符画
colored_ascii_image, colored_ascii_image_chars, colored_ascii_image_colors = image_to_colored_ascii(input_path, output_width, output_height)
# 存储彩色ASCII字符画到图片文件
save_colored_ascii_image_as_picture(colored_ascii_image_chars, colored_ascii_image_colors, font_path, font_size, output_path)
结尾tips:OpenCV读取的文件路径中不能带有中文字符,否则会报错:
完结。。。