X just gave the quote tweet a camera. React with Video, launched June 2, lets you record green screen, split screen, or picture-in-picture reactions to any post — straight from the repost button. Here's exactly how it works, who can use it, and why it changes the math for anyone making video on X.

For 19 years, reacting to something on X (née Twitter) meant typing. The quote tweet was the entire commentary economy: someone posts a take, you post your take on the take, repeat until the discourse collapses under its own weight.

That just changed. On June 2, X's head of product Nikita Bier announced React with Video: tap the repost button on any post, and instead of quoting it with text, you record a video reaction on top of it.

His framing is worth reading literally: "Commentary is one of the most important pillars of X. And sometimes the best way to share your thoughts is with video."

Translation: X watched TikTok build an empire on duets, stitches, and green screen reactions — and decided the platform with the most reactable content on the internet shouldn't be the one without a reaction format.

What is React with Video?

React with Video is a native recording tool inside X that lets you film a video response layered on top of an existing post. It lives in the repost menu — the same place as repost and quote — and publishes your reaction as a video reply in the conversation.

You get three layout modes:

• Green screen — you appear in front of the post, TikTok-style. X automatically removes your background, no actual green screen required.
• Split screen — the screen divides between you and the original post. The side-by-side podcast-clip look.
• Picture-in-picture — your face floats in a corner while the original post (or its video) takes the main stage. The classic reaction-streamer frame.

Recording supports pause and resume, so you can react in segments instead of nailing it in one take. Built-in tools handle background removal, resizing, and repositioning your video before you post — there's no round trip through an editing app.

How to use React with Video on X (step by step)

1. Find a post worth reacting to. Any post works — text, image, or video.
2. Tap the repost button. Alongside Repost and Quote, you'll see the new React with Video option.
3. Pick your layout. Green screen, split screen, or picture-in-picture. You can adjust size and placement of the post and your camera feed.
4. Record. Pause and resume as needed. Keep it tight — reactions are commentary, not keynotes.
5. Preview and post. Your reaction publishes into the conversation as a video reply, attached to the original post.

That's the whole flow. No exports, no editing software, no uploading a screen recording of someone else's post and hoping the crop looks right.

Who can use it right now?

Here's the catch: React with Video is iOS-only at launch. X hasn't announced a timeline for Android or web.

If you're on Android or desktop and the option isn't showing up, nothing is broken — you don't have it yet. The good news is that a "video reaction" is ultimately just a video posted as a reply, and you can build a better one outside the app. We wrote up the full workaround in how to post video reactions on X without an iPhone — including a route that gets you layouts the native tool doesn't offer.

Why X built this (and why now)

Three reasons, in descending order of how openly X will admit them.

1. Commentary is X's core loop. X is where things get reacted to: breaking news, box scores, earnings charts, terrible opinions. The raw material for reaction content is the timeline itself. Until now, the only native response formats were text and a camera roll upload. React with Video closes the gap between "X has the most reactable content" and "X has no reaction format."

2. Video is where the money is. X has spent two years pushing video — vertical feeds, creator revenue sharing, longform uploads. Reaction video is the cheapest video format that exists: no script, no set, no b-roll. Lowering the production floor raises the video supply. That's the whole play.

3. TikTok proved the format prints. Duets and stitches turned every TikTok into a collaboration surface, and reaction chains became a discovery engine. X is porting the mechanic to a network where the reaction targets are takes instead of dances. Arguably a better fit.

What this means for creators

The strategic shift is bigger than the feature. A reply used to be the lowest-leverage thing you could post on X. React with Video turns the reply into a distribution surface — your face, your commentary, attached to a post that's already pulling numbers.

A few early dynamics worth betting on:

• New formats get algorithmic favor. Platforms historically overweight the formats they're trying to grow. Early reactors will likely get reach that late adopters won't.
• Reaction chains compound. Big post → 40 video reactions → each reaction pulls its own audience into the original conversation. Engagement begets engagement.
• Speed wins. The first good video reaction to a viral post inherits that post's traffic. The tenth doesn't. If you want the full first-mover strategy, we broke down the 30-day reaction playbook for X.

Making reaction content beyond the repost button

The native tool is built for in-the-moment reactions on an iPhone. The moment you want anything more — a reaction to a YouTube video instead of an X post, a version for TikTok and Reels, an avatar instead of your face at 7am — you're outside what the repost button does.

That's the layer where Agent Opus operates. The AI Reaction Video Maker builds reaction videos from a prompt: it analyzes the source video, places your reaction at the most engaging moments, and outputs side-by-side, corner overlay, or split-screen layouts — the same three frames X just shipped, but for any source video and any platform. The AI Green Screen Video Generator handles the background-removal look without a physical setup.

And if your reactions live in long form — streams, podcasts, live commentary — OpusClip clips the moments worth reposting and publishes them natively to X, where they're now first-class citizens in the reaction economy.

X just made reaction video a native format on the platform where everything gets reacted to. The repost button finally has a camera. Use it.