I'm trying to use this for personalized sales outreach where the beginning of the video is replacing "Hey, {{firstname}}". But when I generate it the audio plays over video where my lips aren't moving and then the video speeds through my lips moving when there's no audio and then it syncs up with the rest of the pre-recorded video as normal. It looks completely unnatural. Please fix this.

I already have my voice recorded in your tools and it's more than realistic.

Except that to use it, I sometimes put videos of myself on it, and the movement of my lips isn't synchronized with the text.

Would it be possible to create an avatar like Heygen that would be synchronized with my recorded voice?