New Anthias on Tv NEC-V404: Black screen

Now I have a doubt, if I understand correctly, the raspberry Pi3B+ defaults to using the fkms video driver, which doesn’t properly support rotation, how do I solve the problem in the other TOPIC about vertical videos?

https://forums.screenly.io/t/how-do-i-rotate-the-screen-to-play-portrait-video-1080x1920-raspberry-pi-3-b-raspberry-pi-os-lite-64bit-anthias-v0-20-3/6557/19