All three video types take a video link and return a 9:16 vertical video with your branding. They differ in how the text is presented.
Tweet Card
Renders a tweet-style card (your name, handle, avatar, and an optional verified badge) above the clip on a clean black or white canvas, or any color you pick. A “Fetch from X or Instagram” helper pre-fills your identity from a real profile. An Instagram-safe layout option keeps the card clear of IG's interface overlays, and fine-positioning sliders are there if you want pixel control.
Snapchat
A Snapchat-style caption bar over the full-screen clip. You control the bar's position (drag it on a live preview), padding, and opacity. Text is capped at five lines.
Simple Overlay
Just a clean caption above the clip. No card, no chrome. Pick the background color and the font, including uploading your own (.ttf/.otf/.woff).
Shared options
All three share the text engine (AI-written, fixed, or chosen per video, with tone and voice controls), an optional watermark (your logo or text, with opacity, size, and position), and the Instagram caption block. See “Captions & AI-written text”.