I want to do 4. Optimize your video editing pipeline: Review your video editing pipeline (e.g., the create_final_clip function) to ensure that it's optimized for performance. This may include reducing the number of operations, using more efficient algorithms, or caching intermediate results.

This is the code with the function :

import os
import shutil
from moviepy.editor import VideoFileClip, ImageClip, TextClip, CompositeVideoClip
from moviepy.video.fx import all as fx
from create_image_with_text import create_image_with_text
from moviepy.video.compositing.concatenate import concatenate_videoclips
# Set the size of the final video and other parameters
size = (1080, 1920)
delayins = 5 # delay for TOP elements to appear
arrow_blink_duration = 0.5  # Set the duration for each blink


def create_final_clip(text_center, main_video_path):
    
    fps_size = 30

    # Set the directory where all the files are stored
    dir_path = 'C:/Python/VideoCreationTiktok/Source/'
    dir_path_output = 'C:/Python/VideoCreationTiktok/Output/'

    # Set the paths to the source files
    source_files = ['Background.jpg', 'Frame.png', 'Reaction1.mp4', 'tools.png', 'arrow.png']
    background_path, frame_path, reaction_video_path, tools_path, arrow_image_path = (
    os.path.join(dir_path, file) for file in source_files)

    # Get the length of the main video
    main_video = VideoFileClip(main_video_path)
    main_video_length = main_video.duration

    # Load and resize the background and main video
    background_resized = ImageClip(background_path).resize(height=size[1]).set_position('center')
    main_video_resized = main_video.resize(height=size[1] * 0.73).set_position((60, 40))

    # Load and resize the frame image
    frame_resized = ImageClip(frame_path).resize(height=size[1] * 0.82).set_position((10, 20)).set_duration(
    main_video_length)

    # Load and trim the reaction video
    reaction_video = VideoFileClip(reaction_video_path, has_mask=True).subclip(0, main_video_length)

    # Load and resize the tools image
    tools_resized = ImageClip(tools_path).resize(width=int(size[0] * 0.70)).set_position(('right', 'top'))

    # Add the text to the final clip
    txt_clip = TextClip('All Links', fontsize=tools_resized.h * 0.8, font='Impact', color='white', stroke_width=3,
    stroke_color='black').set_position(('left', 'top')).set_duration(main_video_length)


    # Load and position the arrow image
    arrow_image = ImageClip(arrow_image_path).set_position(('left', 'center'))
    


    visible_arrow = arrow_image.set_duration(arrow_blink_duration)  # Set the duration for visible arrow
    invisible_arrow = arrow_image.set_opacity(0).set_duration(arrow_blink_duration)  # Set the duration for invisible arrow

    # Create a sequence of visible and invisible arrow images and concatenate them
    arrow_sequence = [visible_arrow, invisible_arrow] * int(main_video_length * 2 / arrow_blink_duration)   # Repeat the sequence for all lenght of the main video length
    blinking_arrow = concatenate_videoclips(arrow_sequence).resize((size[0] - tools_resized.w - txt_clip.w, tools_resized.h)).set_position((txt_clip.size[0], 0))




    # Set the start time for tools, blinking_arrow, and txt_clip
    tools_resized, blinking_arrow, txt_clip = (clip.set_start(delayins) for clip in [tools_resized, blinking_arrow, txt_clip])



    # Create text clip overlay + Resize text_clip_red to 90%
    image_path = create_image_with_text(text_center)
    text_image_red = ImageClip(image_path).set_position(('center', 'center')).set_duration(0.5).resize(width=int(size[0]*0.9))
        

    # Create the final clip
    
    final_clip = CompositeVideoClip([background_resized, main_video_resized, frame_resized, reaction_video.set_audio(None),
    tools_resized.set_duration(main_video_length), txt_clip, text_image_red, blinking_arrow], size=size)
    

    # Apply the 'Summer' color effect and set the audio
    final_clip = fx.lum_contrast(final_clip, lum=0, contrast=0.2, contrast_thr=190)
    final_clip = final_clip.set_audio(main_video.audio)

  

    #REMOVE LATER
    #final_clip.duration = 5
    
    final_clip.duration = main_video_length


    

    return final_clip