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Diego de Souza

PROFILE

Diego De Souza

Over nine months, this developer advanced hardware-accelerated video processing in the ossrs/ffmpeg-webrtc and FFmpeg/FFmpeg repositories, focusing on GPU-accelerated encoding, decoding, and cross-platform compatibility. They expanded CUDA and NVENC/NVDEC support for new pixel formats, high-bit-depth workflows, and Windows-on-ARM, while refining codec pipelines for AV1, H.264, and HEVC. Their work included stability fixes for NVDEC surface management, adaptive B-frame control, and improved documentation for encoding options. Using C, CUDA, and Bash, they also established Docker-based CI/CD automation and addressed compatibility across evolving header ecosystems, demonstrating depth in low-level programming, video codecs, and robust cross-platform software development.

Overall Statistics

Feature vs Bugs

78%Features

Repository Contributions

27Total
Bugs
4
Commits
27
Features
14
Lines of code
4,685
Activity Months9

Your Network

2277 people

Work History

July 2026

2 Commits

Jul 1, 2026

July 2026 monthly summary focusing on FFmpeg/FFmpeg work, with emphasis on NVDEC stability and cross‑CUDA/CUARRAY compatibility. Implemented robust build and runtime fixes to improve reliability of video decode paths, reduce maintenance risk, and support downstream integrations (e.g., mpv) across changing header ecosystems.

June 2026

7 Commits • 3 Features

Jun 1, 2026

June 2026: Hardware-accelerated media processing improvements across Windows-on-ARM and cross-platform CI/CD, with expanded high-bit-depth support and improved build reliability. Key features delivered include enabling NVENC/NVDEC on aarch64 Windows for ossrs/ffmpeg-webrtc, refactoring CUDA device code for ARM Windows compatibility, establishing Docker-based CI/CD for FFmpeg builds, and broad 12-bit/high-bit-depth support across decoding, CUDA paths, filters, and encoding in FFmpeg.

May 2026

2 Commits • 1 Features

May 1, 2026

May 2026 monthly summary for FFmpeg/FFmpeg focused on stabilizing compatibility and improving observability for NVENC-driven encoding pipelines. Implemented two high-impact changes: a H.264 Baseline compatibility fix and an AV1 encoding warning to align with NVENC constraints. Result: more reliable MPEG-TS/HLS output, fewer DTS-related playback issues, and improved diagnostics for encoder configurations.

April 2026

2 Commits

Apr 1, 2026

April 2026: AV1 decoding robustness enhancements in ossrs/ffmpeg-webrtc. Implemented targeted fixes to AV1CodecConfigurationRecord handling and chroma-format detection to prevent decoding errors and misclassification, improving reliability and compatibility of the cuvid-based AV1 pipeline across diverse streams.

March 2026

1 Commits

Mar 1, 2026

March 2026: OSSRS ffmpeg-webrtc delivered a critical stability and correctness improvement in the NVDEC decoding path. The fix tightens surface pool and unsafe_output handling, addressing a class of runtime failures and decoding stalls while maintaining high throughput in real-time workflows. By capping decode and output surface pools and DPB size, we eliminated out-of-bounds scenarios and reduced the likelihood of 'No decoder surfaces left' errors when downstream components accumulate frames. The changes enhance reliability for end-to-end media pipelines and improve downstream compatibility with NVENC and other CUDA-based components.

February 2026

2 Commits • 2 Features

Feb 1, 2026

February 2026 monthly summary focusing on key accomplishments, major fixes, and business impact across FFmpeg/FFmpeg and ossrs/ffmpeg-webrtc. The work centered on encoding configuration clarity, minor bug fixes in help text, and performance-oriented defaults to improve bitrate efficiency while preserving compatibility.

December 2025

1 Commits • 1 Features

Dec 1, 2025

December 2025: Delivered Adaptive B-frame decision control (b_adapt) for HEVC encoding in FFmpeg/FFmpeg, enabling user control of adaptive B-frame decisions when lookahead is enabled. Implemented in avcodec/nvenc and committed as 499b5f5f92f73e5b0e6108242983695fcb6409e2 with message 'avcodec/nvenc: add b_adapt option for HEVC encoder'. No major bugs fixed this month for this repository. Overall, the feature adds valuable configurability for encoding quality and performance under lookahead, improving flexibility for users and potential gains in efficiency on hardware-accelerated paths. Technologies demonstrated include C/C++, HEVC encoding workflow, NVENC integration, and disciplined, commit-based development.

November 2025

3 Commits • 2 Features

Nov 1, 2025

November 2025 (FFmpeg/FFmpeg): Deliveries focused on expanding CUDA-based pixel format support and enhancing the CUDA scaling path, enabling broader GPU-accelerated video processing capabilities with improved performance and compatibility.

January 2025

7 Commits • 5 Features

Jan 1, 2025

January 2025 monthly summary for ossrs/ffmpeg-webrtc focusing on expanding hardware-accelerated video processing capabilities and quality improvements across CUDA, NVDEC/NVENC, and AV1 workflows.

Activity

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Quality Metrics

Correctness97.4%
Maintainability90.4%
Architecture93.4%
Performance88.8%
AI Usage29.6%

Skills & Technologies

Programming Languages

CCUDAShell

Technical Skills

API DesignAV1BashBuild SystemsCC programmingC/C++ Header AnalysisCI/CDCUDACUDA programmingCodec DevelopmentCodec ImplementationDockerFFmpegFFmpeg Development

Repositories Contributed To

3 repos

Overview of all repositories you've contributed to across your timeline

ossrs/ffmpeg-webrtc

Jan 2025 Jun 2026
5 Months active

Languages Used

CShell

Technical Skills

AV1Codec DevelopmentCodec ImplementationFFmpegFFmpeg DevelopmentGPU Acceleration

FFmpeg/FFmpeg

Nov 2025 Jul 2026
6 Months active

Languages Used

CCUDA

Technical Skills

C programmingCUDA programmingGPU programmingImage scalingVideo processingvideo processing

yt-dlp/FFmpeg-Builds

Jun 2026 Jun 2026
1 Month active

Languages Used

No languages

Technical Skills

BashCI/CDDockerGitHub Actionscross-compilationdevops