OpenUTV 2026.12

build(windows): make build.ps1 work on a fresh machine with Visual St…

OpenUTV Development Build

Warning

This is an automated rolling development build from the latest main branch commit (3cdb7a7).
It is not an official stable release. For stable releases, see Latest Release.

Version: 2026.12-2-g3cdb7a7
Built: 2026-10-04 16:40:51 UTC
Commit: 3cdb7a7

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Recent Changes Since Last Stable Release

Bug Fixes

• fix(linux): enable CRB and EPEL before installing Rocky packages (#94) (3cdb7a7)

Chores

• chore(release): update homebrew cask for 2026.12 [skip ci] (7cda2a2)

Contributors

Special thanks to all contributors who worked on this release:

• Claude Opus 5.5
• @mcoliver (Michael Oliver)

OpenUTV 2026.11

OpenUTV 2026.11

A small macOS release that follows up on the startup failure fixed in 2026.10. Windows and Linux are unchanged apart from being rebuilt.

To upgrade on macOS:

brew update && brew upgrade --cask utv

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macOS

• UTV now tells you when its Homebrew libraries don't match. UTV uses the libraries from your Homebrew rather than bundling its own, so an incompatible Homebrew upgrade can stop it from loading (this is what broke 2026.9, #85). Instead of disappearing without a message, UTV now checks its libraries at launch and shows which one does not match and the command that fixes it, as a dialog when started from Finder, the Dock or open, and as a message when started from a terminal (#88, #89).
• No more second UTV icon in the Dock at startup. The startup update check ran as a separate helper that macOS showed as a second UTV application for a few seconds (#90).
• Fixed the launcher's terminal hint, which gave a wrong address for the Homebrew tap (#88).

Behind the scenes

• A daily automated check now installs the current release from the Homebrew tap with that day's Homebrew libraries and verifies that it starts, so a Homebrew upgrade that breaks UTV is caught by us rather than by you (#88).

OpenUTV 2026.10

OpenUTV 2026.10

OpenUTV 2026.10 fixes the macOS startup failure in 2026.9, lowers the macOS requirement to macOS 15, and adds native HDR presentation on macOS, headless rendering on Linux, and HEIC export through the operating system's encoder.

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macOS: 2026.9 no longer started after a Homebrew upgrade (#85)

Homebrew upgraded OpenColorIO from 2.5 to 2.6. OpenUTV uses the libraries from your Homebrew rather than bundling its own, so 2026.9, built against 2.5, stopped starting with no error message. 2026.10 is built against the current Homebrew libraries.

To upgrade:

brew update && brew upgrade --cask utv

If 2026.10 does not start, your Homebrew libraries are older than this release needs. Bring them up to date with brew update && brew upgrade.

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macOS

• macOS 15 Sequoia and later are now supported; earlier releases required the macOS version they were built on (#61, #62).
• Native HDR and 10-bit presentation through Metal: 10-bit SDR, EDR (extended dynamic range), and HDR PQ / HLG modes, selectable in Preferences (#69). See docs/testing/macos-edr.md.
• HEIC / HEIF export uses Apple's encoder through ImageIO, 10-bit for sources deeper than 8 bits (#81, #84).

Windows

• Fixed a startup loop where the viewer relaunched itself repeatedly after installing with a newer installer over an older release (#73, #74, #75).
• Fixed image export through OpenImageIO, and the list of writable formats now reflects what OpenImageIO can write (#58, #59, #63).
• HEIC / HEIF export through the Windows Imaging Component, using Microsoft's "HEIF Image Extensions" and "HEVC Video Extensions" from the Microsoft Store. Without them the export reports what to install (#81, #84).
• Installer: -Version dev-build installs the development pre-release, and -ZipPath installs from a zip on disk (#86).

Linux

• Headless rendering: utvio / rvio no longer needs an X server. Without a display it renders through EGL, on the GPU when there is one and with Mesa software rendering otherwise. utvio_sw / rvio_sw force software rendering (#82). See docs/headless-rendering.md.
• Fixed the command line tools not starting because of the library path, and Homebrew's Mesa replacing the system GPU driver (#66, #68, #76).
• The release tarball requires glibc 2.38 and does not run on RHEL 8 / 9 yet (#83).

All platforms

• HEIC / HEIF and AVIF are listed as writable only when an encoder is really available (#79, #84). OpenUTV does not ship an HEVC encoder.
• Fixed an intermittent crash on exit in the media library (#64).
• New automated tests run the command line tools and round-trip every writable image format on macOS, Windows and Linux for each build (#60, #64).

OpenUTV 2026.9

OpenUTV 2026.9

OpenUTV 2026.9 brings major feature additions: the Supercharge FFmpeg & Third-Party Codecs Assistant, Portable Custom Keybindings with an interactive cheat-sheet overlay, Multilingual Interface Localization, Automatic Launch-Time Update Checking, and comprehensive security hardening across core string handling.

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Supercharge FFmpeg & Professional Codecs Assistant (#35, #56)

• FFmpeg Engine Diagnostics: Accurately inspects the active FFmpeg configuration and distinguishes between standard GPL builds and supercharged builds (with H.265/HEVC, ProRes, AAC, libx265, and nonfree components).
• Homebrew Shadowing Detection & 1-Click Relink: Detects when ffmpeg-full is installed via Homebrew but shadowed by standard ffmpeg (due to brew upgrade overwriting symlinks) and offers a 1-click automatic relink or copyable terminal command.
• Windows Package Managers Integration: Detects WinGet FFmpeg Shared, Scoop, and Chocolatey installations dynamically across user profile and system paths.
• Blackmagic RAW (BRAW) & RED (R3D) Probing: Seamless dynamic detection for Blackmagic RAW SDK / Player across 64-bit and Program Files (x86) installations, and RED SDK dylibs/DLLs.
• NewTek NDI Network Video Streaming: Runtime detection for NDI 5 / NDI 6 Tools and runtime libraries.
• Interactive UI & Preferences: Accessible via Help > Supercharge FFmpeg & Codecs... and Preferences > Formats.
• CLI / Automation Utility: Bundled cross-platform tool (openutv-supercharge-ffmpeg.py with shell/batch wrappers).

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Custom Keybindings & Shortcuts Overlay UI (#55)

• Portable JSON Keybindings: Fully customizable keybindings via ~/.openutv/keybindings.json (or platform equivalent).
• Keyboard Shortcuts Cheat Sheet: Interactive searchable overlay UI (Help > Keyboard Shortcuts... or F1 / ?) showing all hotkeys categorized with immediate search filtering.
• Conflict Resolution & Validation: Clean error handling and fallback defaults for unrecognized or ambiguous bindings.

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Multilingual Localization & Language Preferences (#54)

• Multi-Language Support: Framework for internationalization across core dialogs, menus, and preferences.
• Language Selector: Added Language dropdown under Preferences > General allowing on-the-fly UI switching with automatic locale persistence.

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Launch-Time Update Checker (#53)

• Automatic Version Checks: Background, non-blocking check against GitHub Releases on startup.
• Update Dialog: Notifies when a newer stable version is available, with direct links to download archives or copy Homebrew/Scoop/Chocolatey upgrade commands.
• Snooze & Dependency Awareness: Options to skip a version or remind later, with bundled dependency status detection.

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Security Hardening & Platform Fixes (#52, #57)

• Memory & String Safety: Replaced unsafe legacy C string functions with bounded variants across image format decoders and core libraries.
• CI / Compiler Infrastructure: Resolved MSVC CMake environment detection and eliminated redundant Homebrew upgrade annotations across workflow runners.
• Package Automation: Enhanced Chocolatey package rules and multi-platform archive packaging.

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Contributors

Special thanks to all contributors who worked on this release:

• @mcoliver (Michael Oliver)

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Installation

macOS (Homebrew Cask)

brew tap OpenUTV/utv https://github.com/OpenUTV/utv
brew install --cask utv

To upgrade an existing installation:

brew upgrade --cask utv

macOS (Standalone Archive)

Download UTV-2026.9-macOS-arm64.zip below, extract UTV.app, and move it to /Applications.

Windows (Standalone Archive)

1. Download UTV-2026.9-windows-x64.zip below and extract the archive (e.g. to C:\Program Files\OpenUTV or C:\Users\<User>\Downloads\utv-windows-x64).
2. Launch bin\utv.exe.

Linux (Standalone Archive)

Download UTV-2026.9-linux-x64.tar.gz below and extract to your desired path.

OpenUTV 2026.8

OpenUTV 2026.8

OpenUTV 2026.8 introduces out-of-the-box hardware GPU debayering for RED (R3D) media across macOS, Windows, and Linux, streamlined image settings, modern Linux toolchains with the mold linker and x86-64-v3 optimizations, session file loading fixes, and improved distribution packaging.

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RED (R3D) Hardware GPU Debayering & Search Paths

• Automatic GPU Acceleration Out-of-the-Box: OpenUTV now probes GPU acceleration capabilities across macOS (Metal/OpenCL), Windows (OpenCL.dll), and Linux (libOpenCL.so.1) on initial startup. If supported, GPU acceleration is automatically enabled by default, delivering immediate real-time playback.
• Cross-Platform OpenCL Hardware Debayering: Introduced a native dynamic runtime OpenCL dispatch backend (MovieREDOpenCL.cpp and MovieREDGpu.cpp) for Windows and Linux that binds directly to system OpenCL drivers without hard build-time SDK dependencies.
• Streamlined UI: Grouped all RED controls under Image > RED, featuring a top-level GPU Acceleration toggle alongside wavelet debayering resolution selections (Full, Half, Quarter, Eighth).
• User Library Search Paths: Added automatic lookup for RED redistributable libraries in standard user configuration directories:
  • macOS: ~/Library/Application Support/OpenUTV/RED
  • Linux: ~/.local/share/openutv/red
  • Windows: %APPDATA%\OpenUTV\RED
• Diagnostic & Version Handshake Probing: Probes RED library version headers and provides clear user notifications on version mismatches (such as R3D SDK 9.2.1 vs. an external 9.3.0 RED PLAYER installation).

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Core Stability & Session Loading

• Session File Loading: Fixed a crash regression when loading saved .rv session files (#39, #42).
• Shader Linking: Resolved GLSL shader linking regressions.
• UI Reentrancy Guards: Wrapped session manager checkbox states to eliminate Qt 6 reentrancy crashes and menu flashing.

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Linux & Windows Platform Modernization

• Linux Build & Runtime Modernization: Linux builds now utilize Homebrew dependencies, the ultra-fast mold linker, and x86-64-v3 compiler optimizations for higher playback throughput (#43).
• Windows Build & Caching: Streamlined Windows compilation with cached MSVC environments and >99% ccache hit rates (#45).
• Archive Structure: Fixed package compression to prevent redundant root folder nesting when extracting macOS (ditto), Windows, and Linux standalone archives (#49).

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Contributors

Special thanks to all contributors who worked on this release:

• @mcoliver (Michael Oliver)

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Installation

macOS (Homebrew Cask)

brew tap OpenUTV/utv https://github.com/OpenUTV/utv
brew install --cask utv

To upgrade an existing installation:

brew upgrade --cask utv

macOS (Standalone Archive)

Download UTV-2026.8-macOS-arm64.zip below, extract UTV.app, and move it to /Applications.

Windows (Standalone Archive)

1. Download UTV-2026.8-windows-x64.zip below and extract the archive (e.g. to C:\Program Files\OpenUTV or C:\Users\<User>\Downloads\utv-windows-x64).
2. Launch bin\utv.exe.

Linux (Standalone Archive)

Download UTV-2026.8-linux-x64.tar.gz below and extract to your desired path.

UTV Release 2026.7

OpenUTV 2026.7

OpenUTV 2026.7 brings native OS file dialogs enabled by default, directory and folder-based media sequence loading, a brand new native C++ trampoline launcher for Windows with automatic hardware and software OpenGL fallback detection, hardened startup logging against crashes on customized user profiles, and bundled Windows diagnostic and update tools.

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Native OS File Dialogs & Directory Loading

• Native File Dialogs by Default: True native OS dialogs (macOS Finder / Windows Explorer / Linux desktop portal) are now enabled by default for a seamless, platform-consistent file browsing experience.
• File Dialog Preference: Added a user preference under Preferences > General > Use Native File Dialog allowing users to switch between native OS dialogs and Qt dialogs at any time.
• Open Directory Support: Added a dedicated File > Open Directory... menu action (Ctrl+Shift+O / Cmd+Shift+O) to quickly load entire media folders.
• Multi-File and Folder Selection: The open dialog now supports selecting directories directly; OpenUTV automatically unpacks and loads all image sequences and media files contained within.
• Unified Sequence Unpacking: Replaced fragmented directory traversal with a unified, robust sequence discovery engine.

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Windows Native Trampoline Launcher & Unbundled Architecture

• Native Trampoline Launcher (utv.exe): Replaced legacy shell launch scripts with a fast, high-performance native C++ launcher executable that coordinates environment initialization and application startup.
• Automatic OpenGL Capability Detection: Probes the host system's OpenGL hardware profile before launching the application. If OpenGL support is below 2.1 or using software GDI Generic renderers, it automatically enables Mesa software rasterization (opengl32sw.dll) for reliable fallback.
• Unified Desktop OpenGL: Configures QT_OPENGL=desktop to ensure Qt and OpenUTV's internal viewport share the same desktop OpenGL context.
• Comprehensive Dependency Discovery: Automatically discovers external runtime dependencies across C:\Program Files\OpenUTVDeps*, Windows registry uninstall entries, OPENUTV_DEPS_ROOT, and PySide6 Qt runtimes.

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Startup Stability & Hardened Logging

• Pre-Created Log Paths: Resolves startup crashes when initializing log files by pre-creating %APPDATA%\OpenUTV\Logs using Qt path utilities before file sinks are opened.
• Guarded Log Initialization: Wrapped spdlog file helper sinks in structured exception handlers with graceful fallback to stderr/console output, preventing unhandled exceptions on systems with roaming profiles, non-ASCII paths, or restricted permissions.
• Null Safety Guards: Hardened all internal log dispatch points to safely operate even if the logging sink fails to initialize.

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Windows Diagnostics & Tools

• Diagnostics Packager: Deployed openutv-diagnostics.bat into the Windows release distribution, enabling 1-click collection of system info, graphics driver details, and crash logs for issue reporting.
• Update Checker: Deployed openutv-check-updates.bat for fast command-line GitHub release checks on Windows.
• Bundled PyOpenColorIO: Included PyOpenColorIO packages within the Windows distribution for out-of-the-box OpenColorIO 2.5 Python scripting.
• CLI Options: Restored the -workItemThreads command-line argument in CLI option parsing.

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Installation

macOS (Homebrew Cask)

brew tap OpenUTV/utv https://github.com/OpenUTV/utv
brew install --cask utv

To upgrade an existing installation:

brew upgrade --cask utv

macOS (Standalone Archive)

Download UTV-2026.7-macOS-arm64.zip below, extract UTV.app, and move it to /Applications.

Windows (Standalone Archive)

1. Download UTV-2026.7-windows-x64.zip below and extract the archive (e.g. to C:\Program Files\OpenUTV or C:\Users\<User>\Downloads\utv-windows-x64).
2. Download and extract the runtime dependencies from OpenUTVDeps 26.5 or install via the MSI package.
3. Launch bin\utv.exe.

UTV Release 2026.6

OpenUTV 2026.6

OpenUTV 2026.6 delivers dynamically linked cinema camera RAW decode for RED Digital Cinema (.r3d) and Blackmagic RAW (.braw), out-of-the-box OpenColorIO ACES 2.0 color management, zero-configuration NDI 6 network streaming (when you have NDI Tools installed), presentation multi-monitor playback fixes, and an upgrade to Qt 6.11.2 & PySide6 6.11.2.

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RED Digital Cinema RAW (.r3d) Playback & Metadata

• Integrated RED R3D Movie Reader (mio_r3d): Native support for REDCODE RAW media files by dynamically linking to REDCINE-X if you have it installed.
• Hardware-Accelerated REDMetal GPU Debayering: Instant GPU-accelerated debayering on macOS via Metal, with smooth interactive toggle between GPU and multi-threaded CPU processing.
• Dynamic Wavelet Decode Resolution: Real-time decode resolution switching (Full, Half Premium, Half Good, Quarter, Eighth, Sixteenth) via Image & View menus and hotkeys, featuring automatic cache invalidation and immediate frame reload.
• Comprehensive Camera Metadata & Timecode: Complete camera and lens metadata exposed in Media Information and Image Info boxes, including Camera Model, PIN, Firmware, Sensor Name, Serial, ISO, Shutter, Kelvins, Tint, Lens Model, Focal Length, Aperture, Focus Distance, Absolute Timecode, Edge Timecode, and Reel/Clip details.

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OpenColorIO & ACES 2.0 Integration

• Bundled Official ACES 2.0 Config: Ships with the Academy Software Foundation ACES 2.0 Studio Config v4.0.0 (studio-config-all-views-v4.0.0_aces-v2.0_ocio-v2.5.ocio) bundled directly inside the application bundle.
• Zero-Config Fallback: Automatically activates and points to the bundled ACES 2.0 config when the OCIO environment variable is not defined on the host system.
• Auto Setup ACES Preference: Added a new user preference (ocio_auto_setup_aces) under OpenColorIO settings that automatically enables OCIO, configures the input colorspace to ACEScg, and aligns the display and view transforms to sRGB.
• Streamlined OCIO Menu: Ensured the OpenColorIO menu and mode controls dynamically auto-initialize and populate on startup.

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Blackmagic RAW (.braw) Playback

• Dynamic BRAW Runtime Loader (mio_braw): Zero-recompile dynamic runtime loader and reader for Blackmagic RAW video media (requires installation of Blackmagic's software eg Resolve).
• Hardware-Accelerated & CPU Decode: Automatically leverages host GPU acceleration for high-framerate playback of .braw camera takes with seamless fallback to multi-threaded CPU decode.
• Full Color & Metadata Preservation: Reads embedded camera ISO, color temperature, tint, color gamut, and gamma curves directly into OpenUTV's imaging pipeline.

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NDI 6 Network Video & Multi-Monitor Presentation

• Zero-Configuration NDI 6 Auto-Discovery: Automatically discovers official NDI 6 runtime libraries across standard system locations on macOS (/Library/NDI SDK for Apple/), Windows (C:\Program Files\NDI\NDI 6 Tools\Runtime\, NDI 6 SDK), and Linux (/usr/lib/x86_64-linux-gnu/).
• Fixed NDI Presentation Device Visibility: Fixed dynamic library search paths ensuring NDI presentation output is available in display preferences on macOS and Windows out of the box.
• Toolbar Device Switching: Select active Display and Presentation devices directly from the main toolbar menu.
• Presentation Playback Stability: Fixed multi-monitor presentation viewport and timeline freezing during playback.
• Sortable Media Information: Added sortable column headers (Property, Value, Attribute) in the Media Information dialog for quick sorting of inspection data.

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Platform Modernization, Qt 6.11.2 & Windows Stability

• Qt 6.11.2 & PySide6 6.11.2: Upgraded UI and Python binding frameworks across all platforms, including GLSL 1.50 shader compatibility.
• Modernized "About UTV" Inspector: Replaced runtime dynamic Python probing with a fast, static compile-time dependency table, eliminating GIL synchronization crashes across Python 3.12–3.14.
• Windows Executable Metadata (utv.rc): Embedded complete Windows PE version information and application icons into utv.exe, enabling full Windows Explorer file property details.

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Installation

macOS (Homebrew Cask)

brew tap OpenUTV/utv https://github.com/OpenUTV/utv
brew install --cask utv

To upgrade an existing installation:

brew upgrade --cask utv

macOS (Standalone Archive)

Download UTV-2026.6-macOS-arm64.zip below, extract UTV.app, and move it to /Applications.

Windows (Standalone Archive)

1. Download UTV-2026.6-windows-x64.zip below and extract the archive (e.g. to C:\Program Files\OpenUTV or C:\Users\<User>\Downloads\utv-windows-x64).
2. Download and extract the runtime dependencies from OpenUTVDeps-26.3-win64.msi or OpenUTVDeps 26.4.
3. Launch bin\utv.exe.

UTV Release 2026.5

OpenUTV 2026.5

OpenUTV 2026.5 introduces high-performance SIMD PNG decoding via libspng, self-contained Windows deployment with bundled MSVC C++ runtime libraries, live timeline metadata tracking in the Qt Media Information inspector, expanded codec and container format support, native SVG vector rendering, and cross-platform GPU hardware acceleration.

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Ultra-Fast SIMD PNG Sequence Decoding (libspng)

• Hardware-Accelerated PNG Reader (io_png): Integrated libspng directly into the PNG image reader with zero-copy decoding straight into OpenUTV's internal FrameBuffer.
• 3–4× Playback Speedup: Leverages hardware SIMD acceleration (NEON on ARM64 / Apple Silicon, AVX2 / SSSE3 on x86_64) for dramatic performance improvements when playing back heavy 8-bit and 16-bit PNG image sequences.
• Complete Color & Metadata Fidelity: Fully preserves sRGB chunk flags, embedded ICC color profiles, gamma values, chromaticity data, and pixel aspect ratios.
• Intelligent Fallback Architecture: Automatically and transparently falls back to libpng if libspng encounters non-standard or proprietary chunk structures.

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Dynamic Media Information & Timeline Inspector

• Live Viewport & Playhead Tracking: The native Qt Media Information dialog (Ctrl+I / Cmd+I) now dynamically tracks the active image or video clip in the viewport as playback traverses multi-clip timelines, EDL cuts, and frame sequences.
• Timeline Media Dropdown: Added an interactive Media: dropdown to the dialog header. Switch effortlessly between ✦ Auto (Active Viewport / Playhead) and any individual clip loaded in the session graph (e.g. sourceGroup000000 (shot_010.exr)).
• Multi-Strategy Metadata Extraction: Robust fallback querying resolves image attributes directly from leaf source nodes and proxy headers even for clips not currently drawn to the active framebuffer.
• Multi-Format Metadata Export: Copy complete metadata attributes directly to the system clipboard with one click as Formatted Text, spreadsheet-ready CSV, or structured JSON.
• Live Search Filtering: Instantly search and filter through hundreds of EXIF, color mastering, audio, and container attributes in real time.

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Native Scalable Vector Graphics (SVG) Support

• Built-in SVG Vector Reader (io_svg): Integrated a lightweight, zero-dependency native SVG rasterizer using NanoSVG.
• First-Class Timeline Integration: Open, inspect, playback, and composite vector graphics (.svg) directly inside OpenUTV sessions, timeline stacks, and command-line tools (utvls, utvio) without external rendering utilities.

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Expanded Video, Audio & Camera RAW Formats

• Extended Video Containers: Added native playback support for WebM (.webm), Ogg Video (.ogv), MPEG Transport Streams (.ts, .mts, .m2ts), DVD VOB (.vob), Windows Media Video (.wmv, .asf), Y4M (.y4m), IVF (.ivf), and MPEG (.mpeg).
• High-Fidelity Audio Tracks: Added playback for Free Lossless Audio Codec (.flac), Advanced Audio Coding (.aac), Opus (.opus), MPEG-4 Audio (.m4a), and Windows Media Audio (.wma).
• Expanded Professional Camera RAW: Added Panasonic Lumix RAW (.rw2), Sony RAW (.sr2), Hasselblad RAW (.3fr), Phase One RAW (.iiq), Samsung RAW (.srw), and Nikon RAW (.nrw).
• Modern Image Formats: Added Canon/Sony HEIF (.hif) and the Quite OK Image format (.qoi).

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Cross-Platform Auto-GPU Acceleration & Intelligent Fallback

• Zero-Configuration Hardware Acceleration: Automatically detects host GPU hardware and initializes hardware-accelerated decode/encode pipelines:
  • macOS: Apple VideoToolbox with native ProRes, HEVC, and H.264 acceleration.
  • Linux: NVIDIA NVDEC / NVENC with automatic fallback to Intel/AMD VAAPI.
  • Windows: NVIDIA NVDECODE / NVENC with automatic fallback to Microsoft D3D11VA and DXVA2.
• Intelligent CPU Fallback: Automatically and seamlessly falls back to high-performance multi-threaded CPU decoding if GPU allocation fails, VRAM limits are exceeded, or an unsupported codec profile is encountered.
• Hardware-Accelerated Apple Silicon HEIC: Added native Apple Silicon CoreGraphics / ImageIO hardware decoding for HEIC/HEIF with full P3 and Rec.2020 color fidelity.

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Windows Deployment & Modernization

• Self-Contained CRT Deployment: Deployed modern MSVC C++ runtime redistributable DLLs (msvcp140.dll, vcruntime140.dll, vcruntime140_1.dll, etc.) app-locally into the Windows distribution package, eliminating missing DLL crashes on systems without pre-installed redistributables.
• Broader Dependency Discovery: Expanded discovery logic in UTV.bat to automatically search %LOCALAPPDATA% and root directories for OpenUTVDeps.
• Session Manager Qt Signals: Fixed Qt 6.11 re-entrancy issues in edit modes (Stack, Switch, SourceGroup) by isolating checkbox state signals during UI updates.
• Robust Exception Handling: Hardened Python RV command wrappers against untyped runtime exceptions across all event listeners.

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Installation

macOS (Homebrew Cask)

brew tap OpenUTV/utv https://github.com/OpenUTV/utv
brew install --cask utv

To upgrade an existing installation:

brew upgrade --cask utv

macOS (Standalone Archive)

Download UTV-2026.5-macOS-arm64.zip below, extract UTV.app, and move it to /Applications.

Windows (Standalone Archive)

1. Download UTV-2026.5-windows-x64.zip below and extract the archive (e.g. to C:\Users\<User>\Downloads\utv-windows-x64 or C:\Program Files\OpenUTV).
2. Download and extract the runtime dependencies from OpenUTVDeps-2026.3-windows-x64.zip into the OpenUTV folder or %LOCALAPPDATA%.
3. Launch bin\utv.exe.

UTV Release 2026.4

OpenUTV 2026.4

OpenUTV 2026.4 introduces major enhancements to media inspection, expanded codec and container format support, native SVG vector rendering, cross-platform GPU hardware acceleration with seamless fallback, and Windows build modernization.

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Dynamic Media Information & Timeline Inspector

• Live Viewport & Playhead Tracking: The native Qt Media Information dialog (Ctrl+I / Cmd+I) now dynamically tracks the active image or video clip in the viewport as playback traverses multi-clip timelines, EDL cuts, and frame sequences.
• Timeline Media Dropdown: Added an interactive Media: dropdown to the dialog header. Switch effortlessly between ✦ Auto (Active Viewport / Playhead) and any individual clip loaded in the session graph (e.g. sourceGroup000000 (shot_010.exr)).
• Multi-Strategy Metadata Extraction: Robust fallback querying resolves image attributes directly from leaf source nodes and proxy headers even for clips not currently drawn to the active framebuffer.
• Multi-Format Metadata Export: Copy complete metadata attributes directly to the system clipboard with one click as Formatted Text, spreadsheet-ready CSV, or structured JSON.
• Live Search Filtering: Instantly search and filter through hundreds of EXIF, color mastering, audio, and container attributes in real time.

---

Native Scalable Vector Graphics (SVG) Support

• Built-in SVG Vector Reader (io_svg): Integrated a lightweight, zero-dependency native SVG rasterizer using NanoSVG (zlib-licensed).
• First-Class Timeline Integration: Open, inspect, playback, and composite vector graphics (.svg) directly inside OpenUTV sessions, timeline stacks, and command-line tools (utvls, utvio) without external rendering utilities.

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Expanded Video, Audio & Camera RAW Formats

• Extended Video Containers: Added native playback support for WebM (.webm), Ogg Video (.ogv), MPEG Transport Streams (.ts, .mts, .m2ts), DVD VOB (.vob), Windows Media Video (.wmv, .asf), Y4M (.y4m), IVF (.ivf), and MPEG (.mpeg).
• High-Fidelity Audio Tracks: Added playback for Free Lossless Audio Codec (.flac), Advanced Audio Coding (.aac), Opus (.opus), MPEG-4 Audio (.m4a), and Windows Media Audio (.wma).
• Expanded Professional Camera RAW: Added Panasonic Lumix RAW (.rw2), Sony RAW (.sr2), Hasselblad RAW (.3fr), Phase One RAW (.iiq), Samsung RAW (.srw), and Nikon RAW (.nrw).
• Modern Image Formats: Added Canon/Sony HEIF (.hif) and the Quite OK Image format (.qoi).

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Cross-Platform Auto-GPU Acceleration & Intelligent Fallback

• Zero-Configuration Hardware Acceleration: Automatically detects host GPU hardware and initializes hardware-accelerated decode/encode pipelines:
  • macOS: Apple VideoToolbox with native ProRes, HEVC, and H.264 acceleration.
  • Linux: NVIDIA NVDEC / NVENC with automatic fallback to Intel/AMD VAAPI.
  • Windows: NVIDIA NVDECODE / NVENC with automatic fallback to Microsoft D3D11VA and DXVA2.
• Intelligent CPU Fallback: Automatically and seamlessly falls back to high-performance multi-threaded CPU decoding if GPU allocation fails, VRAM limits are exceeded, or an unsupported codec profile is encountered.
• Hardware-Accelerated Apple Silicon HEIC: Added native Apple Silicon CoreGraphics / ImageIO hardware decoding for HEIC/HEIF with full P3 and Rec.2020 color fidelity.

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Legacy Subsystem Modernization & Bug Fixes

• Image Subsystem Modernization: Deprecated legacy redundant image plugins in favor of modern OpenImageIO 3.x with direct EXIF metadata extraction.
• Session Manager Qt Signals: Fixed Qt 6.11 re-entrancy issues in edit modes (Stack, Switch, SourceGroup) by isolating checkbox state signals during UI updates.
• Robust Exception Handling: Hardened Python RV command wrappers against untyped runtime exceptions across all event listeners.
• Windows Platform & CI Overhaul: Modernized MSVC build pipeline with Ninja, Vulkan presentation support, Python 3.14 C-extension modules, and MSI packaging.

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Installation

macOS (Homebrew Cask)

brew tap OpenUTV/utv https://github.com/OpenUTV/utv
brew install --cask utv

To upgrade an existing installation:

brew upgrade --cask utv

macOS (Standalone Archive)

Download UTV-2026.4-macOS-arm64.zip below, extract UTV.app, and move it to /Applications.