January 2026 — FFmpeg/FFmpeg: Delivered a stability improvement in the video decoding pipeline by correcting the BL16 size calculation to prevent source overreads. This change enhances data integrity during decoding and reduces risk of playback instability across inputs, lowering support effort and increasing reliability for end users.

October 2025 performance highlights: Delivered targeted SANM codec robustness and color fidelity improvements in FFmpeg/FFmpeg, boosting decoding stability, rendering quality, and maintainability. Implemented alignment fixes and offset handling for SANM codecs 37/47/48, improved buffer management, and added three blitting paths to optimize performance. Replaced the XPAL palette implementation with a DOS-smush-aligned algorithm to reduce color banding. Refactored SANM context by removing rotate_code and centralizing rotation logic within decoders. Added dimension checks for ANIM codecs with own buffers to prevent mis-sized decoding tasks. Overall, these changes broaden codec compatibility, reduce artifacts, and lay groundwork for future SANM optimizations.

In September 2025, FFmpeg/FFmpeg focused on SANM codec stability, correctness, and rendering quality improvements. The consolidation covered data integrity on subversion changes, proper motion vector handling, safer frame object parsing, ANIM dimension handling, decode initialization constraints, and improved block scaling to align with the game engine. Implemented across nine commits, the work tightened memory safety, enforced SANM min/max sizes at decode_init, and guarded against buffer overflows. Key commit highlights include invalidating STOR data when subversion changes, improved block scaling, and safeguards against invalid motion vectors and ANIM dimension handling.

August 2025 monthly summary for FFmpeg/FFmpeg focusing on SANM and related codecs. Delivered a mix of features, refactors, and robust bug fixes across SANM and companion codecs, with a strong emphasis on stability for large BL16 videos and improved maintainability.

June 2025 monthly summary for ossrs/ffmpeg-webrtc focusing on stability and code quality. A targeted bug fix was implemented in the avcodec SANM path to remove codec4 block smoothing due to a bug, resulting in a simpler, more maintainable SANM.c. This change reduces potential edge-case risk and keeps video quality effectively unchanged. The work aligns with ongoing efforts to stabilize the FFmpeg-based WebRTC integration while preserving core functionality.

2025-05 monthly work summary for ossrs/ffmpeg-webrtc focused on expanding video decoding capabilities, stabilizing core paths, and delivering business value through broader format support and improved playback quality. Key activities included implementing multi-layer video format support, extending the SANM decoder for additional codecs, and addressing decoding accuracy issues in legacy tile-based formats. These efforts enhance compatibility, reduce artifacts, and enable higher-quality playback for partner integrations and end users.

April 2025 (ossrs/ffmpeg-webrtc) focused on reliability and compatibility improvements for SANM codec handling in FFmpeg-based pipelines, delivering targeted fixes and enhancements to improve playback stability and data integrity across older and embedded formats. Key deliverables included a critical bug fix and a frame-size detection enhancement: - Bug fix: avcodec/sanm: ignore codec48 compression type 6 to prevent StarWars - Making Magic playback issues and potential data corruption (commit 7f0b7b049696eddef165d6c30ba9e0527555ccd7) - Feature: avcodec/sanm: recognize common FOBJ sizes to improve SANM frame size detection reliability (commit 9369ebf23806417a8f34d042bc7a280e43ff64a3) Impact: enhanced playback stability and data integrity for SANM-based assets, reducing support tickets and improving end-user experience. Technologies involved: FFmpeg/avcodec, SANM codec handling, debugging for data integrity, cross-format compatibility.

March 2025: SANM-focused delivery for ossrs/ffmpeg-webrtc, emphasizing expanded decoder coverage, robust playback for legacy assets, and clearer project ownership.

January 2025: Key SANM codec37 work in ossrs/ffmpeg-webrtc delivering enhancements and a bug fix that improved decoding stability for LucasArts Full Throttle animations and strengthened maintainability.

December 2024 monthly summary for ossrs/ffmpeg-webrtc: Delivered the SMUSH codec48 video decoder, expanding FFmpeg's codec support and enabling processing of SMUSH video within OSSRS workflows; this enhances interoperability and unlocks new streaming scenarios.

Concise monthly summary for ossrs/ffmpeg-webrtc in 2024-11. Focused on delivering high-impact SANM codec47 improvements and SMUSH demuxer enhancements that improve visual quality, playback fidelity, and asset compatibility. Key outcomes include interpolation table support, XPAL handling fix, diff buffer corrections, and ANIMv2 parameter parsing with a safe default framerate.