app.py

import os
from uuid import uuid4
import gradio as gr
from moviepy.editor import VideoFileClip, concatenate_videoclips
from tempfile import TemporaryDirectory

def concatenate(video_clip_paths, output_path, method="compose"):
    clips = [VideoFileClip(c) for c in video_clip_paths]
    if method == "reduce":
        min_height = min([c.h for c in clips])
        min_width = min([c.w for c in clips])
        clips = [c.resize(newsize=(min_width, min_height)) for c in clips]
        final_clip = concatenate_videoclips(clips)
    elif method == "compose":
        final_clip = concatenate_videoclips(clips, method="compose")
    final_clip.write_videofile(output_path)

def merge(dubbed_video, end_video):
    with TemporaryDirectory() as dir:
        outpath = os.path.join(dir, f"{uuid4()}.mp4")
        video_clip_paths = [dubbed_video, end_video]
        concatenate(video_clip_paths, outpath)
        return outpath

input_video_file = gr.Video(label="Upload video")
end_video_file = gr.Video(label="End video", value="end.mp4")

interface = gr.Interface(merge, [input_video_file, end_video_file], gr.Video("Output Video"), title="Merge Videos")

if __name__=="__main__":
    interface.queue().launch()