I want a opensource video generator with prompt on my system.

What graphics card does your desktop have, and how much VRAM does it have? To give you a better recommendation, keep in mind that generating videos takes more GPU power than LLMs.

the ones that i tried
Wan: Great for cinematic B-roll, promotional visuals, and animating still images. The 5B model supports text-to-video and image-to-video at 720p and 24 fps, but you need 24 GB of GPU VRAM for the 720p workflow, this is why i told you to give me your spec, use it with LXT
HunyuanVideo: detailed visuals, realistic movement, and image-to-video generation, 8.3 billion runs a little bit slow on 24 GB GPU

at the end it is not worth it unless you have a very powerful GPU the videos no matter what i tried still not as good as the one you can generate online but it is yours and you can create anything you want, anyway good luck if you have any thing else ask me!