This repository is an OBS Studio plugin that enables simultaneous streaming to multiple RTMP (and SRT/RIST, WHIP) destinations from a single OBS session. It provides a dockable Qt-based user interface where users can configure an arbitrary number of streaming targets, each with independent encoder settings (video and audio) or the option to reuse the current OBS streaming/recording encoder. The plugin manages per-target start/stop, bulk start/stop, and can synchronize with OBS's built-in streaming start/stop events. The architecture is a standard OBS plugin: it registers a dock via the obs-frontend-api, creates a main widget (MultiOutputWidget) that hosts a scrollable list of target cards (PushWidgetImpl), and provides an editor dialog (EditOutputWidgetImpl) for adding/modifying targets. Configurations are persisted in a JSON file (obs-multi-rtmp.json) within the OBS profile directory, with support for export/import. The build system uses CMake with platform-specific presets and GitHub Actions for CI/CD across Windows, macOS, and Linux, including Flatpak packaging. Key strengths include a reusable JSON utility (json-util.hpp), a generic OBS properties widget (obs-properties-widget) that can render any obs_properties tree with two-way data binding, and an RAII scope guard (Finally) in helpers.h. The code demonstrates solid C++ practices, cross-platform awareness, and careful handling of encoder sharing to avoid resource conflicts. However, the plugin is tightly coupled to OBS internals, has no automated tests, and some source files exceed 500 lines mixing UI and business logic.
DistroAV is an OBS Studio plugin that enables real-time network audio/video transmission using NDI technology. It implements both NDI sources (receiving streams) and NDI outputs (transmitting the main scene, preview, or per-source filters) within OBS. The architecture is a standard OBS plugin: it registers custom source, output, and filter types using the OBS API, provides a Qt-based settings dialog for configuration, and includes an automatic update checker. Key data flows involve capturing OBS video/audio frames, converting them to NDI frames using the NDI SDK (v6.3+), and sending/receiving over the network. External dependencies include the NDI runtime library, OBS Studio 31.1.1+, Qt6, and libcurl for updates. The codebase is well-structured with cross-platform CMake build system, CI/CD pipelines, and internationalization support, though it relies on a proprietary SDK and contains some legacy code paths.