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
During this period, work focused on optimizing video processing performance in the FFmpeg/FFmpeg repository by implementing a NEON-accelerated path for 10-bit YUV to planar conversion on AArch64 platforms. The developer rewrote the yuv2planeX_10_c_template() function in assembly, leveraging ARM NEON intrinsics and low-level optimization techniques to maximize throughput. This enhancement replaced the previous C implementation, resulting in up to a 15x speedup according to benchmarks. The contribution improved transcoding efficiency and reduced power consumption for 10-bit video pipelines. The work demonstrated expertise in assembly programming, performance benchmarking, and disciplined code review within a complex open-source codebase.
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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