app.py

import gradio as gr
from moviepy.editor import VideoFileClip

def convert_video(input_video):
    output_path = "output_9x16.mp4"
    clip = VideoFileClip(input_video)

    if clip.duration > 120:
        return "⚠️ Video too long! Please upload a clip shorter than 2 minutes."

    target_width = int(clip.h * 9 / 16)
    x_center = clip.w // 2
    x1 = x_center - target_width // 2
    x2 = x_center + target_width // 2

    clip_resized = clip.crop(x1=x1, x2=x2, y1=0, y2=clip.h)
    clip_resized = clip_resized.resize(height=1920, width=1080)

    clip_resized.write_videofile(output_path, codec="libx264", audio_codec="aac")
    return output_path

demo = gr.Interface(
    fn=convert_video,
    inputs=gr.Video(label="Upload 16:9 Video"),
    outputs=gr.Video(label="Converted 9:16 Video"),
    title="16:9 → 9:16 Video Converter",
    description="Upload a landscape video (≤2 minutes) and get a portrait version (1080x1920)."
)

if __name__ == "__main__":
    demo.launch(share=True, ssr_mode=False)