OBS Studio 33.0.0 Release Notes

The latest iteration of OBS Studio has arrived. This update brings significant backend architectural changes, refined user interface interactions, and expanded hardware support.

🚀 Major New Features

Browser Framework Update

The Chromium Embedded Framework (CEF) has undergone a massive leap.

Note: This is a backend update that should be transparent to the end-user. However, if you encounter any "weirdness" with your browser sources or docks, please report it immediately!

The version shift can be represented as: $\text{CEF } 127/6533 \rightarrow 150/7871$

Plugin Architecture Overhaul

The way OBS handles plugins has been completely redesigned to improve organization and stability.

UI & Interaction Enhancements

• Preview Source Snapping:
  • Added a visual indicator for snapping.
  • Snapping now occurs along the entire axis rather than just upon direct contact.
  • Hidden sources no longer trigger snapping.
• Spinbox Refinements:
  • Fixed intermittent typing blocks and text clipping.
  • Values now commit only after pressing Enter (which no longer closes the window).
  • Shift + Up/Down now allows for faster, multi-step value increments.
  • Improved cursor dragging within the input field.

Hardware Support

• Arm64: NVENC is now officially enabled for Arm64 architectures.

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🛠️ General Changes

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🐞 Bug Fixes

Stability & Crashes

• Fixed macOS 27.2 startup crash.
• Resolved potential deadlock during audio/video processing.
• Fixed crash when renaming a source while the "Add Source" window was active.
• Fixed Linux crash occurring upon USB microphone removal.
• Fixed crash related to invalid shader cache files.
• Fixed source toolbar crash when the source type was missing.
• Fixed crash when disabling a newly created profile.

Functional Fixes

• Recording/Streaming:
  • Improved file splitting for .mov and Hybrid MP4.
  • Fixed AMF B-frame offset calculations that caused stream disconnects.
  • Fixed outputs hanging when an invalid rescale resolution was applied.
• Interface/Logic:
  • Fixed monitoring icon desynchronization when using WebSockets or 3rd party tools.
  • Fixed PipeWire screencast duplication in Studio Mode.
  • Fixed profile import errors caused by trailing slashes in paths.
  • Added a startup error notification if obs-transitions fails to load.

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💻 Developer Information

API & Signal Updates

• Replay Buffer: New output signals and frontend events added for saving.
• Safe Mode: Introduced obs_frontend_is_safe_mode for first-party plugins. Note: Third-party plugins are completely disabled in Safe Mode.
• Canvas: Added obs_canvas_video_active() to verify if canvas video is running.
• Monitoring: The monitoring_type API for audio sources is deprecated; use the monitoring_enabled boolean instead.
• General: Deprecated unused hidden APIs for sources.

Toolchain & Dependencies

The minimum requirements for the build environment have been raised. It is highly recommended to keep your toolchain current.

Removed Support:

• FFmpeg 6.x and 7.x
• Qt 6.4 through 6.9

Other Dev Notes

• Added file extension filtering for OBS_PATH_FILE_SAVE path types.
• Updated theme files with guidance on the theme system.
• Modified obs_canvas_reset_video() to allow resetting a canvas's video if other canvases are active.
• Updated Flatpak plugin extension points to include versions.
• Clarified obs_module_unload documentation.
• Fixed an issue where repeated preview toggles were non-functional.
• Core signal handlers are now only emitted for public canvases.

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📦 Checksums

OBS-Studio-33.0.0-Sources.tar.gz: c1ae3c98c1bb70ebdced33e894a526fcbbbda9bfd95806970a3fc31f74b08f6c
OBS-Studio-33.0.0-Ubun... [Truncated]