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PostHog: Replay Vision AI
See how to create configurable scanners to summarize session replays at scale, then use AI to analyze the results for deeper insights.
Replay Vision allows you to create configurable “scanners” that watch all of your Session Replays for you, with configurable triggers, outputs shapes, and prompts.
This allows you to summarize your replays at scale, create monitors watching for various patterns or behavior, or “score” the user session on a scale you define. You can also create a list of tags and classify each session into one or more of those buckets, again, custom-defined by you. After all that, you can filter, search, sort, and chat with PostHog AI about those results to find even more learnings from these observations.
The demo will show me using the working product– setting up a simple scanner that will watch all my session replays for me and create a summary, then kicking off some on-demand runs of that scanner, and analyzing the results of those runs using PostHog AI.
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- rrweb JSONAn open-source session replay format that serializes real-time DOM mutations and user interactions into a lightweight, pixel-perfect JSON event stream.Engineers use rrweb to record and replay web sessions without the heavy performance overhead of traditional video (like MP4 format). By leveraging the browser's MutationObserver API, the library serializes the initial DOM snapshot and subsequent user interactions (such as mouse movements, scrolls, and keystrokes) into a structured JSON schema. This text-based event stream allows developers to reconstruct exact user sessions programmatically, making it a critical asset for remote debugging, customer support triage, and product analytics platforms.