Simple functions to speed up audio and video to a specific multiply rate using Python

def speed_up_audio(input_file, output_file, speed_factor=1.2):

    # Run ffmpeg command to speed up audio

    command = ['ffmpeg', '-i', input_file, '-filter:a', f'atempo={speed_factor}', output_file, '-y']

    subprocess.run(command, stdout=subprocess.PIPE, stderr=subprocess.PIPE)

    return output_file

def speed_up_video(video_path, output_path):

    from moviepy.editor import VideoFileClip

   

    if video_path == output_path:

        raise ValueError("Output path cannot be the same as input path")

    clip = VideoFileClip(video_path)

    sped_up_clip = clip.speedx(1.2)

    sped_up_clip.write_videofile(output_path)

    return output_path