Gemini can now help you spot AI-generated videos

By Pranob Mehrotra Published December 19, 2025

Gemini recently picked up the ability to detect AI-generated images, and Google is now expanding this capability to include AI video content. Thanks to this, you can ask Gemini whether a video was created or edited using AI, which should prove handy given the recent rise of AI slop across social media and messaging platforms.

Google says you can now upload video files right in the Gemini app or on the web and prompt the assistant with something straightforward like “Was this generated using AI?” Gemini will then analyze the visuals and audio tracks for Google’s SynthID watermark. If the watermark is detected, Gemini will show where exactly in the video or audio it appears, offering more context than a simple yes-or-no response.

With AI-generated videos becoming increasingly common across social platforms, this feature is a welcome addition. Short clips, ads, and reposted videos are often shared without clear labels or context, making it harder to tell what’s real and what’s not. Having a built-in verification tool in Gemini could help users quickly check questionable clips.

While the feature is useful, it doesn’t solve the broader problem of AI detection across the web. Since it relies entirely on SynthID watermarks, it only detects videos generated by Google’s own AI models or those that have adopted SynthID watermarking.

If you upload a video created or modified by models that don’t use SynthID, Gemini won’t be able to flag it as AI-made. Additionally, video uploads are capped at 100MB or 90 seconds, so this feature is geared towards social media posts, not full-length videos.

Google says the feature is available everywhere the Gemini app is supported and in all languages. It doesn’t require a subscription, making it an easy option for anyone looking to identify AI-generated content they come across online.