How to update Video component in gradio?

Question

I want to display a different video in the gr.components.Video() after the button is clicked.

def update_video(input_video):
    video = input_video.replace('.mp4', '_out.mp4')
    return [gr.components.Video.update(value=video)]

with gr.Blocks(theme=gr.themes.Soft()) as interface: 
    inputs = gr.components.Video()
    update = gr.Button('Update')

    update.click(update_video, inputs=inputs, outputs=[inputs])

interface.launch(height=700)

Tried the code above it results in an empty video box.