I have tried to make my Raspberry behave like a Chromecast, following tutorials like this one: Raspberry Pi Chromecast Alternative using Raspicast
There are lot of other tutorials, but they have all the same steps, basically install omxplayer/omxiv on Raspberry, enable SSH, and download Raspicast.
I have followed those steps, but when I try to cast a video or an image via the application, nothing happens.
My Raspberry is a Raspberry 4, running on Raspbian, connected to network with Wi-Fi.
SHH work well, as I can connect to Raspberry with Putty.
What can I do to debug this?