使用 moviepy 来加速视频而不是音频

如何解决使用 moviepy 来加速视频而不是音频

我需要把图片列表做成视频，每张图片都有动画，但是我的视频时间太长，速度太慢，我试图加快速度，但效果不是很好，让我的动画消失

怎样才能更有效的给图片添加动画，可以根据音频时长改变时长，而视频的效果只是加速

蟒蛇 3.8.2

电影 1.0.3

mac 操作系统

这是我的代码

def create_image_video(image,fps,index):
    video_path = f"./video/{index}.mp4"
    image_clip = (ImageClip(image,duration=fps)
              .set_fps(fps)
              )
    image_fps = image_clip.set_duration(fps)
    image_fps.write_videofile(video_path)
    return video_path

def create_video_animation(video_file_path):
    video_path_sp = video_file_path.split("/")
    video_path = '/'.join(video_path_sp[:-1]) +"/"+ video_path_sp[-1].split(".")[0] + "_te.mp4"
    video = VideoFileClip(video_file_path)
    video1_copy = video.copy()
    size = video1_copy.w,video1_copy.h
    ti = video1_copy.duration / 15
    sub_video = [
        video1_copy.subclip(0,ti).rotate(0).resize(size),video1_copy.subclip(ti*1,ti*2).rotate(-30).resize(size),video1_copy.subclip(ti*2,ti*3).rotate(-60).resize(size),video1_copy.subclip(ti*4,ti*5).rotate(-120).resize(size),video1_copy.subclip(ti*5,ti*6).rotate(-150).resize(size),video1_copy.subclip(ti*7,ti * 8).rotate(--210).resize(size),video1_copy.subclip(ti*8,ti * 9).rotate(-240).resize(size),video1_copy.subclip(ti*10,ti * 11).rotate(-300).resize(size),video1_copy.subclip(ti*11,ti * 12).rotate(-330).resize(size),video1_copy.subclip(ti*12,ti * 13).rotate(-360).resize(size),]
    concatenate_videoclips(sub_video).write_videofile(video_path)
    return video_path


def merge_video(videos_list,video_path,fps):
    video_list_clip = concatenate_videoclips(videos_list)
    video_list_clip.to_videofile(video_path,fps)
    return VideoFileClip(video_path)


def add_music(music,video_file):

    audio = AudioFileClip(music)
    bgm = afx.audio_loop(audio,duration=video_file.duration)
    video_clip = video_file.set_audio(bgm)
    return video_clip


def create_image_videos(width,height,images_origin,music,output,fps):
    target_image_path = images_origin.replace(images_origin[0],images_origin[-1])
    if not os.path.exists(target_image_path):
        file_path = readDir(images_origin)
        for img in file_path:
             resizeImage(img,target_image_path,(width,height))
    file_path = readDir(target_image_path)
    image_video_list = list()
    music_clip = AudioFileClip(music).duration
    image_fps = round((len(file_path) * 2) / music_clip,3)
    for index,image in enumerate(file_path):
        image_video_path = create_image_video(image,image_fps,index)
        animation_path = create_video_animation(image_video_path)
        image_video_list += [animation_path,image_video_path]
    L = []
    for vid_path in image_video_list:
        if ".mp4" in vid_path:
            video = VideoFileClip(vid_path)
            L.append(video)
    final_clip = concatenate_videoclips(L)
    music_clip = AudioFileClip(music)
    video_speed = final_clip.duration / music_clip.duration
    video = final_clip.fl_time(lambda t: video_speed*t,apply_to=["mask","video"]).set_end(final_clip.duration / video_speed)
    final_add_music = video.set_audio(music_clip)
    final_add_music.write_videofile("./video/ttt.mp4")