Changes in 8.4.1:

• Linux: Fixed a crash when "Show Profiles Toolbar" is enabled
• Mac: Fixed a scanning issue with Samsung scanners and Apple Driver
• Escl: Fixed an issue connecting to the wrong IP with mDNS responders

You can download it from GitHub.

The highlights of this version are a new placebo GPU module based on libplacebo, a 32-bit float default audio sample format, and Adjustment Clips (fx_cut) that filter only the tracks below them.

Framework

• Added a list-based dispatch for image-conversion callbacks on mlt_frame. Use mlt_frame_append_convert_image() to register a converter instead of setting frame->convert_image directly. Multiple converters are tried in registration order; the first that succeeds wins. New public API:
  • mlt_frame_prepend_convert_image()
  • mlt_frame_append_convert_image()
  • mlt_frame_convert_image()
  • mlt_frame_next_convert_image()
  • mlt_frame_has_convert_image()
  • mlt_frame_copy_convert_image()
• API behavior change: mlt_frame_s::convert_image is now read-only after init and is permanently set to the dispatcher mlt_frame_convert_image(). A custom function written directly to this field is no longer called. If you really need that (I have never heard of anyone who does), clear the frame’s _convert_image_callbacks property and use mlt_frame_append_convert_image() instead.
• fx_cut (Adjustment Clip) now applies its filters only to tracks below it. Higher tracks composite on top of the filtered result. New image-stack helpers are used by tractor stacking and by fx_cut:
  • mlt_frame_prepend_image_from_service()
  • mlt_frame_push_image_with_fx_cut()
• Fixed a crash when applying a Movit (OpenGL) filter to an fx_cut (Adjustment Clip). Cross-producer image sharing (including the reverse fx_cut share) finalizes an in-progress Movit chain as rgba64 and does not copy producer-keyed _movit chain state. Same-producer prepends keep the GPU chain. Playlist fx_cut frames now set _producer so Movit can key the chain.
• meta. and set. properties are now copied from the producer onto fx_cut frames so producer annotations reach tractor output. New public API:
  • mlt_producer_pass_frame_properties()
  • Mlt::Producer::pass_frame_properties()
• Changed the default audio sample format to float32 (mlt_audio_f32le). Added mlt_audio_format_id() and an mlt_audio_format property on the multi consumer. Conversion between integer and float is lossless and symmetric (s16 and u8 round-trip exactly).
• Deprecated the sox filter, which only supports 32-bit integer samples.
• Deprecated the volume filter’s normalize parameter because it forces 16-bit integer audio. Use dynamic_loudness instead. The volume filter itself still supports float samples.
• Per-track audio-level metadata is now propagated to output frames (meta.audio.*).
• Improved mlt_property_is_anim() so strings that merely contain = (for example URLs) are not treated as animation.
• mlt_properties_get_data() no longer returns a data pointer for rect properties.
• Fixed a signed integer overflow in mlt_luma_map_from_pgm.
• Fixed fx_cut in-point handling in mlt_transition.
• Fixed Android mlt++ builds by disabling ELF symbol versioning.
• Fixed a macOS crash in numeric property conversion caused by setlocale. Parsing and formatting no longer change the process LC_NUMERIC.

Modules

• Image converters (movit.convert, avcolor_space, imageconvert) are now attached from data in loader.ini, using the image_convert key.
• Movit rgba64 is now a valid input as well as an output: FlatInput is created with GL_UNSIGNED_SHORT and set_pixel_data() uses the 16-bit overload. Previously, rgba64 was uploaded as 8-bit, which distorted the image when an OpenGL filter ran on an fx_cut.
• Added placebo GPU module (placebo.render, placebo.shader) using libplacebo for scaling, debanding, dithering, tonemapping, and mpv-style .hook shaders (D3D11 / Vulkan / OpenGL).
• Fixed a deadlock in the decklink consumer when pausing, seeking, and resuming playback.
• Added ducking to the mix transition (duck_threshold, duck_attenuation, duck_level, duck_fade_in, duck_fade_out, and an optional prefix that records the level on the frame as <prefix>duck_level).
• Added #frame+1# keyword in dynamictext (1-based frame number).
• Added more audio formats to the audiolevel filter.
• Added FFmpeg 9 support in avformat.
• Fixed 10-bit hevc_vaapi encoding.
• The avformat consumer now logs when it finishes.
• Fixed rnnoise so it works at sample rates other than 48 kHz by resampling.
• frei0r.kaleid0sc0pe and frei0r.squigglevision now report internal threading.
• Fixed frei0r.camerashake (and its blur) with preview scaling.
• The OpenFX module now skips duplicate plugins.
• USE_LV2 and USE_VST2 require USE_LADSPA. The LADSPA blacklist.txt is installed even without JACK, and LV2_PATH is expanded correctly on Windows.
• Fixed affine and qtblend inside mask_apply.
• Fixed the qtblend transition so it does not apply pixel-aspect normalization twice.
• Fixed alpha scaling in the luma transition, including when a luma file is used, and documented the invert property.
• Fixed shape filter alpha subtraction for rgba.
• Fixed motion-tracker shapes clipping outside the frame.
• Fixed colorspace and range of cached images in qimage and pixbuf.
• Fixed crop when hardware decode and scale are combined with preview scaling.
• Fixed the subtitle filter rendering one frame past its end time, and fixed the subtitle_feed end-frame calculation.
• Fixed filename buffer overflows in gpsgraphic and gpstext.
• Fixed the sdl2 consumer so it no longer freezes on Windows after a few seconds.
• Fixed sdl2_audio so it no longer hangs in consumer_stop() when stopped while paused.
• Added s32, float, s32le, f32le, and u8 to the noise producer, and s16, s32, s32le, f32le, and u8 to tone. Fixed tone integer conversion to match audioconvert.
• Fixed a double-free in the xml producer when a filter, transition, link, or producer fails to load.
• Fixed movit.convert leaking a Movit input on every frame when an effect chain is reused.
• Fixed the heart-rate keyword in gpstext (#gps_hr#).
• gpsgraphic no longer sets time_offset when a GPS file is first loaded.

Other

• melt prints its progress when it finishes and exits with a non-zero status when interrupted by a signal.
• Fixed melt on Windows so it no longer ignores window resizing and keyboard transport.
• Fixed melt -jack option not working with PipeWire.

This beta update fixes several bugs reported in the previous build, and fixes compatibility for some effect plugins.

Changes since 5.2 Beta (build 9762):

• Fixed tooltips not displaying for the History and Layers windows
• Fixed compatibility for the Content Aware Fill effect plugin
• Fixed a bug that was causing the Dynamic Draw effect plugin’s output to have its alpha channel reset to opaque
• The mouse wheel can now be used to scroll menus other than Effects and Adjustments when they can’t completely fit onto the screen
• Optimized the performance of the canvas when at zoom levels >100% to use less memory bandwidth. This should reduce power usage on laptops.
• Wine: Improved text rendering quality and stability by using DWriteCore
• Wine: UI animations now work

Download and Install

This build is available via the built-in updater as long as you have opted-in to pre-release updates. From within Settings -> Updates, enable “Also check for pre-release (beta) versions of paint.net” and then click on the Check Now button. You can also use the links below to download an offline installer or portable ZIP.

You can also download the installer here (for any supported CPU and OS), which is also where you can find downloads for offline installers, portable ZIPs, and deployable MSIs.

For the experimental builds for Wine, you can go here to download them.

​

Beta 6 Changes

• Fixed a crash during certain actions involving groups in Beta 1-5 [prgmitchell] (#13978)
• Fixed scripting not working on macOS in Beta 1-5 [PatTheMav] (#13976)
• Fixed game capture hooks not updating in Beta 1-5 [Warchamp7] (#13968)
• Fixed clock Lua script not working in Beta 1-5 [RytoEX] (#13974)
• Changed Safe Mode to not start WebSocket Server [FiniteSingularity/RytoEX] (#13984)
• Removed support for FFmpeg 6.x and 7.x [RytoEX] (#13964)
• Removed support for Qt 6.4-6.9 [RytoEX] (#13969)

Beta 5 Changes

• Fixed duplicate "Save Replay" hotkey entries when switching profiles in Beta 1-4 [xtfo] (#13943)
• Fixed warning dialogs on macOS not rendering rich text in Beta 1-4 [Warchamp7] (#13949)
• Fixed source icon state appearing inverted in Beta 1-4 [Warchamp7] (#13953)
• Fixed audio monitoring settings not saving in Beta 1-4 [Warchamp7] (#13951)
• Fixed missing encoder check showing missing encoders in an output mode that is not currently selected in Beta 1-4 [Warchamp7] (#13950)
• Fixed Windows updater not updating game capture and virtual camera in some cases in Beta 1-4 [Warchamp7] (#13939)

Beta 4 Changes

• Fixed a CI and packaging issue. There are no application changes since Beta 1.

Beta 3 Changes

• Fixed a CI issue. There are no application changes since Beta 1.

Beta 2 Changes

• Fixed a versioning issue. There are no application changes since Beta 1.

33.0 New Features

• Updated CEF from 127/6533 to 150/7871 [WizardCM] (#13900)
  • 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] (#13594)
  • 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] (#12298)
  • 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] (#12337)
  • 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] (#13827)

33.0 Changes

• Added a check for encoders being missing when loading a profile [derrod] (#11340)
• Added support for newest NVIDIA Broadcast SDKs for NVIDIA Audio Effects and Video Effects [pkviet] (#13838)
• Added hotkeys for controlling audio monitoring of a source [Warchamp7] (#13599)
• Fixed issues with groups in Studio Mode [Warchamp7] (#11092)
  • 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] (#12047)
• Improved detection of fullscreen games for Game Capture [Kira-NT] (#10880)
• Improved transparency handling for macOS Screen Capture [jcm93] (#13030)
• Scaled simple output recording audio bitrate by channel count [nickvonkaenel] (#13311)
• Removed support for Ubuntu 24.04

33.0 Bug Fixes

• Added a startup error if obs-transitions failed to load [notr1ch] (#13321)
• Improved file splitting for Hybrid MP4/MOV [derrod] (#13386)
• Fixed outputs getting stuck running when a bad rescale output resolution is set [suogesi] (#13375)
• Fixed monitoring icon state getting desynced when using third-party tools or websockets [prgmitchell] (#13822)
• Fixed potential crash when shader cache file is invalid [notr1ch] (#13538)
• Fixed a potential crash on Linux when USB mic is removed [R0te/RytoEX] (#13922)
• Fixed a potential crash when renaming a source with the Add Source window open [Warchamp7] (#13800)
• Fixed a potential deadlock during video/audio tasks [exeldro] (#13579)
• Fixed an issue with B-frame offset calculation in AMF that could cause streams to disconnect [lexano-ivs] (#13762)
• Fixed PipeWire screencast sources being duplicated in studio mode [tytan652] (#13673)
• Fixed a potential crash when switching off a newly created profile [Warchamp7] (#13182)
• Fixed a source toolbar crash when source type is missing [Penwy] (#13539)

33.0 Developer Information

• Added frontend event and output signal for replay buffer saving [Penwy] (#8955)
• Added guidance regarding the theme system to the top of all theme files [Warchamp7] (#13733)
• Added ability to set a file extension filter for OBS_PATH_FILE_SAVE path types [FiniteSingularity] (#10190)
• 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] (#13735)
• 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] (#13543)
  • Changed clang-format version used to 22.1.3 [PatTheMav] (#13549)
• Updated libnsgif to 1.0.0 [RytoEX] (#11178)
  • This is a breaking change for any plugins using libobs/graphics gs_image_file
• Clarified documentation for obs_module_unload [notr1ch] (#13327)
• Required MbedTLS 3 and exclude 4 or later [tytan652] (#13799)
• Fixed repeated preview enable/disables not working [WarmUpTill] (#12580)
• Only emit core signal handlers for public canvases [tt2468] (#13574)
• Deprecated unused hidden API for sources [derrod] (#13122)
• Deprecated APIs for audio source monitoring_type [Warchamp7] (#13599)
  • This is replaced by a new monitoring_enabled boolean

Checksums

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• [p]Agents now wear their equipped gloves during the photobooth photography sessions and in buy menu[/p][/*]
• [p]Fixed grenade crosshair rendering when crosshair thickness is set to 3 pixels[/p][/*]
• [p]Fixed formatting of titles in commend and report dialogs[/p][/*]
• [p]Improved lighting in the Warehouse map[/p][/*]
• [p]Updated workshop convars whitelist with the new crosshair settings[/p][/*]
• [p]Stability improvements[/p][/*]