This is really amazing, I've been working with AI generation for months and it's amazing how fast separate tools are coming together into one and are usable on your own local machine.
I've been using Ovi for about a week and it's a blast. Like all AI gen, it's a slot machine and even putting in good inputs might lead to bad outputs, but if you run it enough you'll get something good or usable.
I've definitely made many things that look and sound real with both I2V and T2V, albeit T2V tends to look more like 90s tv quality at times, but that also makes it seem more real. If you use Flux SPRO as the image source you can get some pretty realistic looking videos.
I do have a 5090, so it takes about 4 to 5 minutes to make a 5 second clip.