moviepy平移效果

moviepy版本1.0.2
使用moviepy实现了自上而下，自下而上的效果，可以根据实现各样的效果

# 从上往下👇
from moviepy.editor import ImageClip, CompositeVideoClip
from moviepy.video.VideoClip import ColorClip

# 加载图片A
image_a = ImageClip("right_long.png")

# 获取图片的尺寸
image_width, image_height = image_a.size

# 定义画布高度
canvas_height = 500

pic_duration = image_height / canvas_height

# 创建白色背景画布，大小为图片宽度和设定的高度
background = ColorClip(size=(image_width, canvas_height), color=(255, 255, 255), duration=pic_duration)

# 设置图片的持续时间
image_a = image_a.set_duration(pic_duration)

# 设置平移函数：图片从画布外下方平移到画布内
def move_image(t):
    y_pos = -image_height + (image_height * t / pic_duration)  # 从画布外平移到画布内
    return ('center', y_pos)

# 应用平移效果
moving_image = image_a.set_position(lambda t: move_image(t))

# 合成视频：白色背景 + 平移效果的图片
final_video = CompositeVideoClip([background, moving_image])

# 输出视频文件
final_video.write_videofile("from_top_to_bottom.mp4", codec="libx264", fps=24)

其中想要具体从哪里平移到哪里可以自己计算。
画了一张图可以参考

由此可以得出y_pos

自下而上

#👆
from moviepy.editor import ImageClip, CompositeVideoClip
from moviepy.video.VideoClip import ColorClip

image_a = ImageClip("right_long.png")

image_width, image_height = image_a.size

canvas_height = 500

speed_factor = 5 #越大越慢
pic_duration = (image_height / canvas_height) * speed_factor

background = ColorClip(size=(image_width, canvas_height), color=(255, 255, 255), duration=pic_duration)

image_a = image_a.set_duration(pic_duration)

def move_image(t):
    y_pos = canvas_height - (image_height * t / pic_duration)
    return ('center', y_pos)

moving_image = image_a.set_position(lambda t: move_image(t))
final_video = CompositeVideoClip([background, moving_image])
final_video.write_videofile("from_bottom_to_top.mp4", codec="libx264", fps=24)