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Hankang Li

PROFILE

Hankang Li

During this period, work focused on improving the stability of the FFmpeg/FFmpeg repository by addressing a critical bug in the swscale module. Using C programming and expertise in color conversion and video processing, the developer identified and resolved a signed integer overflow in the color conversion arithmetic. This fix enhanced the correctness of color processing across various color spaces and dynamic ranges, reducing the likelihood of color artifacts and runtime crashes during transcoding. The contribution adhered to project standards with a detailed commit message and proper sign-off, resulting in more reliable runtime behavior and improved output fidelity for FFmpeg users.

Overall Statistics

Feature vs Bugs

0%Features

Repository Contributions

1Total
Bugs
1
Commits
1
Features
0
Lines of code
28
Activity Months1

Work History

March 2026

1 Commits

Mar 1, 2026

Concise monthly summary for 2026-03 (FFmpeg/FFmpeg): Delivered a critical bug fix in the swscale module addressing a signed integer overflow in color conversion arithmetic. The change, committed as e33b3962e5b12cbf3e2d2c6387331c10c6d46bb5 and associated with FFmpeg issue #22331, enhances stability and correctness of color processing across color spaces and dynamic ranges, reducing the risk of color artifacts and runtime crashes in transcoding workflows.

Activity

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Quality Metrics

Correctness100.0%
Maintainability80.0%
Architecture80.0%
Performance80.0%
AI Usage20.0%

Skills & Technologies

Programming Languages

C

Technical Skills

C programmingcolor conversionvideo processing

Repositories Contributed To

1 repo

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

FFmpeg/FFmpeg

Mar 2026 Mar 2026
1 Month active

Languages Used

C

Technical Skills

C programmingcolor conversionvideo processing