ossrs/ffmpeg-webrtc
Apr 2026 – Apr 2026
1 Month active
Languages Used
AssemblyC
Technical Skills
assembly languagelow-level programmingperformance optimizationvideo encoding
zuxy
PROFILE
Zuxy
Zuxy Meng contributed low-level performance optimizations to the FFmpeg/FFmpeg and ossrs/ffmpeg-webrtc repositories, focusing on modernizing video prediction functions. Over two months, Zuxy replaced legacy MMX-based DC and horizontal prediction code in H.264 intra prediction paths with SSE2 implementations using assembly and C. This approach improved compatibility with newer Intel and AMD CPUs, enabled future SIMD enhancements, and reduced maintenance overhead by deprecating outdated MMX code. The work demonstrated expertise in assembly language, performance optimization, and video processing, delivering measurable performance gains and ensuring the codebase remains maintainable and efficient for evolving hardware architectures.
Overall Statistics
Feature vs Bugs
100%Features
Repository Contributions
3Total
Bugs
0
Commits
3
Features
2
Lines of code
106
Activity Months2
Your Network
348 peopleWork History
April 2026
2 Commits • 1 Features
Apr 1, 2026In April 2026, OSSRS/ffmpeg-webrtc delivered SSE2-based optimizations for video prediction functions, replacing MMX implementations to improve compatibility and performance on modern CPUs while deprecating legacy MMX code. No major bugs fixed in this repository this month. The changes strengthen streaming efficiency by accelerating intra prediction paths on mainstream hardware and reduce maintenance overhead by consolidating on SSE2, supporting safer future optimizations and wider CPU compatibility.
2 Commits • 1 Features
Apr 1, 2026In April 2026, OSSRS/ffmpeg-webrtc delivered SSE2-based optimizations for video prediction functions, replacing MMX implementations to improve compatibility and performance on modern CPUs while deprecating legacy MMX code. No major bugs fixed in this repository this month. The changes strengthen streaming efficiency by accelerating intra prediction paths on mainstream hardware and reduce maintenance overhead by consolidating on SSE2, supporting safer future optimizations and wider CPU compatibility.
April 2026
March 2026
1 Commits • 1 Features
Mar 1, 2026March 2026: FFmpeg/FFmpeg – DC Prediction SSE2 Optimization. Replaced the MMX-based top DC prediction with SSE2 in avcodec/x86/h264_intrapred to improve compatibility with newer Intel CPUs and unlock potential performance gains. No major bugs fixed reported for this period based on the provided data. Impact: modernized the x86 intrapred path for maintainability and future SIMD work, with potential performance uplift on Skylake+ CPUs (LLVM-MCA >60% predicted); Zen 4 showed comparable results. Skills demonstrated: SSE2 intrinsics, x86 optimization, MMX deprecation, clean commit messaging and maintainability.
March 2026
1 Commits • 1 Features
Mar 1, 2026March 2026: FFmpeg/FFmpeg – DC Prediction SSE2 Optimization. Replaced the MMX-based top DC prediction with SSE2 in avcodec/x86/h264_intrapred to improve compatibility with newer Intel CPUs and unlock potential performance gains. No major bugs fixed reported for this period based on the provided data. Impact: modernized the x86 intrapred path for maintainability and future SIMD work, with potential performance uplift on Skylake+ CPUs (LLVM-MCA >60% predicted); Zen 4 showed comparable results. Skills demonstrated: SSE2 intrinsics, x86 optimization, MMX deprecation, clean commit messaging and maintainability.
Activity
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Quality Metrics
Correctness100.0%
Maintainability80.0%
Architecture93.4%
Performance80.0%
AI Usage20.0%
Skills & Technologies
Programming Languages
AssemblyC
Technical Skills
assembly languagelow-level programmingperformance optimizationvideo encodingvideo processing
Repositories Contributed To
Overview of all repositories you've contributed to across your timeline
FFmpeg/FFmpeg
Mar 2026 – Mar 2026
1 Month active
Languages Used
AssemblyC
Technical Skills
low-level programmingperformance optimizationvideo processing