X Launches TikTok-Style 'React with Video' for iOS—Here's How It Works

• Green screen: Your video is superimposed directly over the original post, mimicking the popular TikTok green-screen effect.
• Split screen: Your reaction video and the original post appear side by side in a divided layout.
• Picture-in-picture (PiP): Your selfie video floats as a smaller, resizable window on top of the original content.

While recording, you can resize and reposition the video overlay on the screen, pause the recording mid-capture, and choose to display the original post in a full-screen media mode . Once finished, the reaction video is posted as a reply to the original content .

Target Audience and Purpose

The feature is primarily aimed at creators and influencers. X is positioning it as a built-in studio tool that lets creators produce reaction content without needing to leave the app or use third-party editing software . The company is also pitching it as a more engaging alternative to a standard repost or quote post, encouraging active video commentary over passive resharing .

Fitting Into X's Video-First Strategy

React with Video did not appear in a vacuum. It is part of a prolonged strategic overhaul that began in earnest after Elon Musk's acquisition, with X declaring itself a "video-first platform" in early 2024 . The company backed up that statement with a series of video-centric launches: long-form video uploads, an Immersive Video surface that surpassed 100 million daily users, a dedicated Video Tab for US users, a TV app for smart TVs, and exclusive content deals with media personalities .

This feature directly competes with TikTok's native video reply tools—which have existed since 2021—and aims to capture the same creator-driven, high-engagement format that has fueled short-form video platforms . The move makes X's ecosystem more self-contained for video-first creators who previously had to export content to other apps.

A Look Back at Testing

X did not develop this overnight. App researcher Radu Oncescu first spotted early prototypes of a "React with video" option in March 2025, which allowed testers to overlay a video selfie onto a post . By April 2025, the platform was actively developing green-screen capabilities and entity segmentation to isolate a user's video from their background . Those features have now materialized in the public launch.

When Will It Arrive on Android and Web?

As of launch, React with Video is available exclusively on iOS . X representatives have said a rollout for Android and the web version is coming "soon," but the company has not provided a confirmed date or timeline . For now, the feature remains limited to iPhone users.