Is This Video Real? Google Gemini Now Has an Answer!
Google upgrades Gemini AI with video verification using SynthID watermarks to let users check if content is AI generated

By Samarjit Kaur

on December 19, 2025

Google has added a new video verification feature to its Gemini app. It now allows users to check if a video is created or edited using Google’s AI tools. The update is available globally for Gemini users. The move comes as governments, platforms and media organisations step up efforts to address the spread of manipulated and synthetic video content online.

How the verification feature works

The feature lets users upload a video file to the Gemini app and ask whether it contains AI-generated material. Gemini runs checks for SynthID, an invisible digital watermark embedded in content produced by Google’s AI systems. So, rather than getting a simple confirmation, users get highlights of the video segments that contain SynthID markers. This provides insights into which segments may have been generated or altered using Google’s tools.

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Scope and availability

Google said the verification tool supports videos up to 90 seconds and files up to 100 megabytes. The feature works across all languages supported by the Gemini app and is being rolled out to users worldwide.
SynthID was initially developed to verify AI-generated images and audio. The launch is a further step in Google’s efforts to make AI-produced content easier to identify.

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Why did Google choose to roll this out now?

Generative AI is being closely monitored in its role in creating misleading and fabricated media. Tech giants are under pressure from regulators and policymakers to provide a barometer to identify AI-generated content. This specifically pertains to video manipulation tools, which are becoming more advanced. Google said the Gemini verification feature is intended to give users more context about the origin of digital content, rather than serving as a definitive judgment of authenticity.

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