Set local image as poster

[remizik]

Hi,
I'd like to be able to use a local png image as a 'poster' (i'm using home assistant on a Rpi)
I don't think it's currently possible unless I misunderstood the documentation :

As a poster you can use:
http-link (should be publicly available link)
camera entity from Hass
stream name from the go2rtc config
Jinja2 template (should render camera entity or stream name)

Thanks for your help :)