Month 2025-10: Delivered macro-based configuration for the D3D12VA encoder to standardize QP range and maximum frame size, refactoring code to leverage reusable macros and apply consistently across rate control modes. This work improves encoding configurability, reduces duplication, and enhances maintainability, enabling safer experimentation with rate control parameters and faster future integration of rate-control improvements across FFmpeg/FFmpeg.

September 2025 monthly summary for FFmpeg/FFmpeg focused on robustness, governance, and measurable business impact. Key changes delivered: - VAAPI Encoder: Frame size overflow protection implemented by interpreting max_frame_size as bits rather than bytes to prevent erroneous calculations, reducing risk of instability in the VAAPI encoding path. - Code ownership update for d3d12va review process: Updated CODEOWNERS to include Tong Wu as a reviewer for d3d12va-related files, improving ownership, reviews, and governance.

August 2025: Delivered a new D3D12VA Encoder max_frame_size option in FFmpeg/FFmpeg to cap per-frame sizes and stabilize streaming. The option is added to the encoder context and integrated into rate-control configurations for CBR, VBR, and QVBR, enabling predictable frame sizes and reduced bandwidth spikes. The change was implemented in FFmpeg/FFmpeg with commit 9893d66addd19401830a9187525194354882fee8. Overall impact includes improved streaming stability and better resource planning. No major bugs fixed this month.

November 2024: Delivered a refactor of the HEVC encoder initialization in ossrs/ffmpeg-webrtc to use a common hardware base encoding function for VPS/SPS/PPS (D3D12VA). The change centralizes initialization, reduces duplication, and preserves core encoding behavior, improving maintainability and enabling faster future enhancements. Result supports more reliable hardware-accelerated encoding and smoother integration with other hardware paths.