2025-09 FFmpeg/FFmpeg monthly summary: Focused on API/ABI evolution and release readiness. Delivered a libavutil version bump from 11 to 12, signaling backward-incompatible changes or significant new features, enabling downstream upgrade planning and compatibility checks. No major bugs fixed this month; the emphasis was on versioning and maintenance to support stable releases.

August 2025 monthly summary for FFmpeg/FFmpeg: Delivered key reliability and governance improvements. Addressed a critical build issue in TLS protocol linking for avformat and implemented governance updates to MAINTAINERS and CODEOWNERS to reflect new maintainers for d3d12va and VVC. These changes enhance build stability, maintainability, and code-review throughput, directly supporting faster delivery of TLS features and graphics components.

June 2025 monthly summary focusing on VVC maintenance, decoding correctness, and conformance testing across ossrs/ffmpeg-webrtc and FFmpeg/FFmpeg. Highlights include maintainer roster update for vvc, VVC palette decoding fix, expanded conformance suite, endianness-aware hash verification, and improved checksum logging.

May 2025 delivered major VVC codec enhancements for ossrs/ffmpeg-webrtc, focusing on palette-based coding, binarization, adaptive color transform, and intra transform improvements, with targeted data-path/interface refinements. The work improves compression efficiency, decoding robustness, and real-time performance across a range of VVC content and WebRTC scenarios. The changes span multiple modules (avcodec/vvc, dsp, ctu/intra) and are backed by a cohesive set of commits across palette support, ACT integration, adaptive color transform, and transform coefficient handling.

During Apr 2025, OSSRS/ffmpeg-webrtc delivered substantial SEI and metadata enhancements across H.264/H.265/H.266 and VVC pipelines, significantly improving playback accuracy, HDR handling, and frame integrity across devices. Implemented comprehensive SEI support, new metadata structures, and decoder-side processing to preserve film grain characteristics and color/display metadata from source to frames. The work includes a focused set of commits adding H274 SEI types, frame field info, picture hash support, and extensive VVC SEI decoding features, enabling richer metadata handling and higher fidelity streaming.