OBS Studio 33.0.0

33.0 New Features

• Updated CEF from 127/6533 to 150/7871 [WizardCM]
  • This is a massive update to the underlying framework used for browser sources and docks from the July 2024 release to September 2026
  • All of this work is on the backend and should be invisible to users. Please be sure to report any new weirdness or problems you run into with browser sources!
• Complete overhaul to plugin loading [FiniteSingularity/PatTheMav]
  • First-party plugins are now in a new folder named core
  • Third-party plugins have an updated installation location and folder structure
  • Existing third-party plugins will continue to load from the legacy locations until OBS Studio 34.0
  • More information is available in our knowledge base article
• Improved how source snapping works in the preview [Warchamp7]
  • New visual indicator added
  • Sources now snap along the entire axis instead of only when directly touching
  • Sources no longer snap to hidden sources
• Improved behavior of spinboxes for number values [Warchamp7]
  • Typing is no longer mysteriously blocked in some situations
  • Numbers are no longer cut off in some situations
  • Values now update only after pressing Enter and Enter does not close the window
  • Holding Shift + Up/Down now advances multiple steps at a time
  • Dragging the cursor inside the input but outside the text itself now works properly
• Enabled NVENC on Arm64 [RytoEX]

33.0 Changes

• Added a check for encoders being missing when loading a profile [derrod]
• Added support for newest NVIDIA Broadcast SDKs for NVIDIA Audio Effects and Video Effects [pkviet]
• Added hotkeys for controlling audio monitoring of a source [Warchamp7]
• Changed Safe Mode to not start WebSocket Server [FiniteSingularity/RytoEX]
• Fixed issues with groups in Studio Mode [Warchamp7]
  • Fixed moving sources inside a group causing them to glitch out in Program
  • Fixed moving sources inside a group showing up live in Program
• Adjusted naming of Window Capture methods on Windows [Penwy]
• Improved detection of fullscreen games for Game Capture [Kira-NT]
• Improved transparency handling for macOS Screen Capture [jcm93]
• Scaled simple output recording audio bitrate by channel count [nickvonkaenel]
• Removed support for Ubuntu 24.04 [RytoEX]

33.0 Bug Fixes

• Added a startup error if obs-transitions failed to load [notr1ch]
• Improved file splitting for Hybrid MP4/MOV [derrod]
• Fixed outputs getting stuck running when a bad rescale output resolution is set [suogesi]
• Fixed monitoring icon state getting desynced when using third-party tools or websockets [prgmitchell]
• Fixed a crash on macOS 27.2 when starting OBS Studio [RytoEX]
• Fixed potential crash when shader cache file is invalid [notr1ch]
• Fixed a potential crash on Linux when USB mic is removed [R0te/RytoEX]
• Fixed a potential crash when renaming a source with the Add Source window open [Warchamp7]
• Fixed a potential deadlock during video/audio tasks [exeldro]
• Fixed an issue with B-frame offset calculation in AMF that could cause streams to disconnect [lexano-ivs]
• Fixed PipeWire screencast sources being duplicated in studio mode [tytan652]
• Fixed a potential crash when switching off a newly created profile [Warchamp7]
• Fixed a source toolbar crash when source type is missing [Penwy]
• Fixed profile import failing on paths with a trailing slash [Ushkalovk]

33.0 Developer Information

• Added frontend event and output signal for replay buffer saving [Penwy]
• Added guidance regarding the theme system to the top of all theme files [Warchamp7]
• Added ability to set a file extension filter for OBS_PATH_FILE_SAVE path types [FiniteSingularity]
• Added obs_frontend_is_safe_mode for first-party plugins
  • Third-party plugins are not loaded at all in Safe Mode
• Added versions to Flatpak plugin extension point [tytan652]
• Added obs_canvas_video_active() to check if the video of a canvas is active [exeldro]
• The minimum supported versions of Visual Studio, Windows SDK, and clang-format have been increased. Previous versions may continue to work, but will no longer be tested/supported. It is recommended that build environments are kept up-to-date with the project's toolchain.
  • Changed Windows builds to use Visual Studio 2026 and SDK 26100 [RytoEX]
  • Changed clang-format version used to 22.1.3 [PatTheMav]
• Changed obs_canvas_reset_video() to allow resetting a canvas's video when any other canvas's video is active, but not its own video [exeldro]
• Updated libnsgif to 1.0.0 [RytoEX]
  • This is a breaking change for any plugins using libobs/graphics gs_image_file
• Clarified documentation for obs_module_unload [notr1ch]
• Required MbedTLS 3 and exclude 4 or later [tytan652]
• Removed support for FFmpeg 6.x and 7.x [RytoEX]
• Removed support for Qt 6.4-6.9 [RytoEX]
• Fixed repeated preview enable/disables not working [WarmUpTill]
• Only emit core signal handlers for public canvases [tt2468]
• Deprecated unused hidden API for sources [derrod]
• Deprecated APIs for audio source monitoring_type [Warchamp7]
  • This is replaced by a new monitoring_enabled boolean