FFmpeg/FFmpeg
Jul 2025 – Jul 2025
1 Month active
Languages Used
AssemblyC
Technical Skills
ARM NEON IntrinsicsAssembly ProgrammingLow-level OptimizationVideo Processing
Logaprakash Ramajayam
PROFILE
Logaprakash Ramajayam
Logaprakash Ramajayam developed a NEON-accelerated 10-bit YUV to planar conversion feature for the FFmpeg/FFmpeg repository, targeting the swscale module on AArch64 platforms. He implemented this optimization in assembly within output.S, leveraging ARM NEON intrinsics to replace the previous C-based approach. By focusing on low-level optimization and video processing, he achieved up to a 15x speedup in transcoding throughput for 10-bit pipelines, directly improving efficiency and reducing power consumption. His work demonstrated strong skills in assembly programming, performance benchmarking, and disciplined code review, delivering a focused and high-impact enhancement to FFmpeg’s video processing capabilities.
Overall Statistics
Feature vs Bugs
100%Features
Repository Contributions
1Total
Bugs
0
Commits
1
Features
1
Lines of code
383
Activity Months1
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Work History
July 2025
1 Commits • 1 Features
Jul 1, 2025FFmpeg/FFmpeg – 2025-07: Delivered a high-impact performance optimization for 10-bit YUV to planar conversion on AArch64 by implementing a NEON-accelerated path in swscale/aarch64/output.S (yuv2planeX_10_c_template()). This feature, supported by commit 49477972b7175284663c9ef4124345c71dc9c7a1, yields up to 15x speedup over the previous C implementation. No major bug fixes recorded this month. Overall impact: significantly improved transcoding throughput and efficiency for 10-bit pipelines on ARM, enabling faster workloads and lower power usage. Skills demonstrated: ARM NEON SIMD, assembly optimization, FFmpeg swscale module, performance benchmarking, and a disciplined code-review/commit process.
1 Commits • 1 Features
Jul 1, 2025FFmpeg/FFmpeg – 2025-07: Delivered a high-impact performance optimization for 10-bit YUV to planar conversion on AArch64 by implementing a NEON-accelerated path in swscale/aarch64/output.S (yuv2planeX_10_c_template()). This feature, supported by commit 49477972b7175284663c9ef4124345c71dc9c7a1, yields up to 15x speedup over the previous C implementation. No major bug fixes recorded this month. Overall impact: significantly improved transcoding throughput and efficiency for 10-bit pipelines on ARM, enabling faster workloads and lower power usage. Skills demonstrated: ARM NEON SIMD, assembly optimization, FFmpeg swscale module, performance benchmarking, and a disciplined code-review/commit process.
July 2025
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Quality Metrics
Correctness100.0%
Maintainability80.0%
Architecture80.0%
Performance100.0%
AI Usage20.0%
Skills & Technologies
Programming Languages
AssemblyC
Technical Skills
ARM NEON IntrinsicsAssembly ProgrammingLow-level OptimizationVideo Processing
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