app.py

import gradio as gr
import os
from moviepy.editor import *

def edit(video, start, end, width):
    clip = VideoFileClip(video) 
    clip = clip.subclip(start, end)

    print('original', clip.w, clip.h)
    
    w = int(width)
    h = int(w * clip.h / clip.w)

    if(h % 2 != 0): h += 1
    if(w % 2 != 0): w += 1

    clip = clip.resize((w,h))

    clip.write_videofile('ex.mp4', audio_codec='aac')

    print('final', clip.w, clip.h)

    return ['ex.mp4', os.stat('ex.mp4').st_size / 1000000]

def video_upload(video):
    clip = VideoFileClip(video) 
    print(video)
    file_size = os.stat(video).st_size / 1000000
    duration = clip.duration
    width = clip.w
    return [gr.update(maximum=duration), gr.update(maximum=duration, value=duration), gr.update(value=width) , file_size ]

with gr.Blocks() as demo:
    #gr.Markdown("""<center><h1> Video Edito </h1></center> """)
    with gr.Row():
        with gr.Column():
            video_in = gr.Video(label='Input Video')
            start_slider = gr.Slider(label='Start Time', interactive=True)
            end_slider = gr.Slider(label='End Time', interactive=True, value=60)
            width_slider = gr.Slider(label='Width (pixels)', interactive=True, minimum=100, maximum=1920, value=1920)
            filesize_textbox = gr.Textbox(label='File Size (MB)', interactive=False)
            btn = gr.Button("Run")
        with gr.Column():
            video_out = gr.Video(label='Output Video')
            filesize_out_textbox = gr.Textbox(label='File Size (MB)', interactive=False)
    
    btn.click(fn=edit, inputs=[video_in, start_slider, end_slider, width_slider], outputs=[video_out, filesize_out_textbox])
    video_in.upload(video_upload, video_in, [start_slider, end_slider, width_slider, filesize_textbox])

demo.launch()