X's new React with Video feature launched June 2 on iOS — and nowhere else. If you're on Android or desktop, you can't see the button, and X hasn't said when you will. Here's how to post video reactions on X anyway, including layouts the native tool doesn't offer.

Quick diagnosis first, because most people land here from a frustrated search: if you tapped the repost button on X and there's no React with Video option, your app isn't broken and you don't need to reinstall anything. The feature is iOS-only at launch. No Android date. No web date. That's the whole story.

Which is a problem, because Android is roughly seven out of every ten smartphones on Earth, and the people most likely to want a reaction format — streamers, podcasters, anyone with a real camera — work from a desktop. X built a reaction tool and left the majority of reactors waiting.

Here's the thing though: you don't actually need the button.

A video reaction is just a video posted as a reply

Strip the feature down and React with Video does three things: records you, lays your recording over the original post (green screen, split screen, or picture-in-picture), and posts the result as a video reply.

The reply part has always been available to everyone — you can attach a video to a reply from any device X runs on. The only thing iOS users got that you don't is the recording and layout layer. And that layer is replaceable. Honestly, upgradeable.

Three workflows, depending on what you're working with.

Workflow 1: You have a camera (Android or desktop)

Record your reaction however you normally record yourself — phone camera, webcam, the same setup you stream with. Then build the reaction layout outside the app:

1. Record your take. 30–60 seconds, one point, hook in the first sentence. Screenshot or screen-record the post you're reacting to.
2. Assemble the layout with the AI Reaction Video Maker. Give Agent Opus your reaction footage and the source content, and tell it the frame you want: side-by-side, corner overlay (the PiP look), or split screen — the same three layouts X shipped, generated from a prompt. If you're reacting to a video, it analyzes the source and places your reaction beats at the most engaging moments.
3. Caption it. The majority of feed viewing happens muted; the native X tool doesn't caption you, which is its own kind of funny. Captions come standard in the workflow.
4. Post it as a reply to the target post, from whatever device you're on.

From the timeline, the result reads as a video reaction. Nobody is checking your OS.

Workflow 2: You want the green screen look (no green screen, no iPhone)

The signature React with Video mode is green screen — you, floating in front of the post you're dunking on. X does that with automatic background removal on iOS.

The AI Green Screen Video Generator does the same job from a prompt: AI handles the background extraction and drops your footage onto whatever backdrop you want — the post screenshot, the chart you're explaining, the receipt from three years ago. No physical green screen, no iPhone, no manual keying.

This is the frame to use when your reaction is evidence-driven. Stand in front of the thing. Point at it.

Workflow 3: You don't want to be on camera at all

Here's an option the native tool flatly doesn't have: reacting without your face.

The AI Reaction Video Maker supports avatar-driven reactions — an AI avatar delivers your commentary in the reaction frame, positioned over the source content. Write the take, pick the presenter, generate. For faceless channels, brand accounts, or anyone whose best thoughts arrive before their camera-readiness does, this is a format iOS users literally cannot make with the repost button.

The part where being locked out is an advantage

Now the strategic point, because there's a real one.

A reaction recorded inside X's composer lives inside X. It posts as a reply and that's the end of its life — there's no file, no asset, nothing to publish anywhere else. iPhone users are trading convenience for a dead end.

When you build your reaction outside the app, you own the file. The same reaction posts to X as a reply, then goes out to TikTok, Reels, and Shorts — where reaction formats already have a decade of proven demand. One take, four platforms. OpusClip handles the clipping and scheduling side if your reactions come out of longer recordings, like streams or podcast sessions.

Run the math over a month of consistent reacting (here's the full 30-day playbook) and the Android "disadvantage" produces 4x the surface area of the native workflow. The button is a convenience, not a moat.

When will React with Video come to Android?

X hasn't announced anything. The realistic read: X ships iOS-first as a pattern, and features that perform follow to Android within a few months — but no commitment exists as of June 2026. (Full breakdown of the feature and launch in our React with Video explainer.)

The practical advice is simpler: don't wait. The algorithmic window for a new format favors whoever's using it now, and replies don't check what device you posted from. By the time the button reaches Android, you can either be starting from zero or be the account in your niche that people already expect reactions from.

The button is late. Your reactions don't have to be.