OBS Studio 30.1, a suite for streaming, compositing and video recording, has been released. The code is written in C/C++ and distributed under the GPLv2 license. Assemblies are generated for Linux (flatpak), Windows and macOS.
The goal of developing OBS Studio was to create a portable version of the Open Broadcaster Software (OBS Classic) application that is not tied to the Windows platform, supports OpenGL and is extensible through plugins. Another difference is the use of a modular architecture, which implies the separation of the interface and the core of the program. It supports transcoding of source streams, video capture during games and streaming to PeerTube, Twitch, Facebook Gaming, YouTube, DailyMotion, Hitbox and other services. To ensure high performance, it is possible to use hardware acceleration mechanisms (for example, NVENC, Intel QSV and VAAPI).
Support is provided for compositing with building a scene based on arbitrary video streams, data from web cameras, video capture cards, images, text, the contents of application windows or the entire screen. During the broadcast, switching between several predefined scene options is allowed (for example, to switch views with an emphasis on the screen content and the image from the webcam). The program also provides tools for audio mixing, filtering with VST plugins, volume leveling and noise suppression.
Key changes:
- Enabled HDR (High Dynamic Range) support for HEVC (H.265) streams transmitted over RTMP (Real-Time Messaging Protocol). Previously, HDR could be used with the AV1 format, but this configuration was not supported in YouTube.
- The broadcast source showing a slideshow of images has been reworked. Uploading files to Slideshow Source is now done asynchronously. Fixed issue with looping until all images are shown.
- Added a setting for automatic cropping along specified boundaries.
- For SDR (Standard Dynamic Range) in the HDR Tone Mapping filter, support for the maxRGB tone converter has been added.
- Added options for changing the scale using the GPU when streaming and recording video.
- For the Windows platform, options have been implemented for capturing audio in games and supporting the PMA (Premultiplied alpha) compositing mode.
- Added support for multi-track audio for mpegts and the ability to select audio channels for CoreAudio.
- For VA-API and output via WebRTC/WHIP, support for the AV1 format has been implemented.
- A new broadcast source has been added that uses the PipeWire multimedia server as a video capture device.
- Fragmented MP4 and MOV formats support PCM audio.
- The default recording format has changed to fragmented MP4 (fMP4) on Linux and Windows platforms, and fragmented MOV (fMOV) on macOS.
Source: opennet.ru