# OBS Studio 33.0 reaches release candidate with CEF overhaul, plugin system rewrite

> **Key takeaway:** OBS Studio 33.0.0-rc3 brings a major Chromium Embedded Framework update from version 127 to 150 and a complete overhaul of plugin loading architecture.

**Published:** 2026-10-21T00:02:27+00:00 
**Source:** OBS Studio GitHub Releases 
**Category:** foss-apps 
**Canonical URL:** https://fosswire.org/news/obs-studio-330-reaches-release-candidate-with-cef-overhaul-p.html 

## Summary
OBS Studio 33.0.0 Release Candidate 3 is now available, capping a long beta cycle with significant backend changes. The release updates the browser source engine to CEF 150/7871 and restructures how plugins load, with first-party plugins moving to a new 'core' folder. Multiple Windows-specific fixes arrived in RC3, including a resolution for browser sources failing under administrator privileges on Windows 11.

## What changes in OBS Studio 33.0
- **CEF updated from 127/6533 to 150/7871**: the framework underlying browser sources and docks jumps from July 2024 to September 2026
- **Plugin loading overhauled**: first-party plugins now live in a `core` folder; third-party plugins get new installation paths, with legacy locations supported through OBS 34.0
- **Build requirements raised**: Windows builds now use Visual Studio 2026 and SDK 26100; Qt 6.4-6.9 and FFmpeg 6.x/7.x support removed
- **New canvas API**: `obs_canvas_video_active()` added to check canvas video state; `obs_canvas_reset_video()` behavior modified
- **Platform fixes**: NVENC enabled on Arm64, PipeWire screencast duplication in studio mode fixed, macOS scripting restored

## Why it matters
The CEF and plugin architecture changes are preparatory work that will affect third-party plugin developers more than end users in the short term, though the removal of FFmpeg 6.x/7.x and older Qt versions may complicate builds on conservative distributions.