app_test.py

import gradio as gr
import os


def video_identity(video):
    src="/file=videos/test.mp4"
    print(src)
    vid = """<video width="320" height="240" controls> \
             <source src="%s" type="video/mp4">\
           </video>""" % src
    # vid =  ("<img src='/file=img.jpg' alt='image One'>")
    return vid


demo = gr.Interface(video_identity, 
                    gr.Video(), 
                    gr.HTML(), 
                    )

if __name__ == "__main__":
    # with gr.Blocks() as demo:
    #     gr.HTML("<img src='/file=img.jpg' alt='image One'>")
    
    demo.launch(allowed_paths=["."])