How to properly use a video as main menu background?

[renpy0101]

I'm just starting to use Renpy. I don't know much about programming. I've lurked around tons of this forum's posts and I can't seem to make it work. Here's what I left
in screens.rpy in my last try:

screen main_menu():


style_prefix "main_menu"

add Movie(size=(1920, 1080))
on "show" action Play("movie", "try.mkv", "loop=True")
on "hide" action Stop("movie")
on "replaced" action Stop("movie")
on "start" action Stop("movie")

frame:
pass

use navigation

if gui.show_name:

vbox:
text "[config.name!t]":
style "main_menu_title"

text "[config.version]":
style "main_menu_version"


style main_menu_frame is empty
style main_menu_vbox is vbox
style main_menu_text is gui_text
style main_menu_title is main_menu_text
style main_menu_version is main_menu_text

style main_menu_frame:
xsize 420
yfill True

background "gui/overlay/main_menu.png"

style main_menu_vbox:
xalign 1.0
xoffset -30
xmaximum 1200
yalign 1.0
yoffset -30

style main_menu_text:
properties gui.text_properties("main_menu", accent=True)

style main_menu_title:
properties gui.text_properties("title")

style main_menu_version:
properties gui.text_properties("version")


The video starts fine when I launch the project, but if I click any menu other than start (say, options) it dissapears, and when I try to go back the main menu, the background just turns as the transparent squares thing. If I start the game, before clicking any other menu, the video just overrides the screen and doesn't hide. I have to open the menu for it to disappear.

I'm sorry if this is a dumb doubt, but I just haven't be able to make it work. Sorry for my English

[Imperf3kt]

Take a look at this post:
viewtopic.php?f=8&t=47552#p474525

From the looks of it, you should add your movie to the navigation screen instead / also.