FFmpeg/FFmpeg
Aug 2025 – May 2026
2 Months active
Languages Used
CMakefilePlaintext
Technical Skills
Audio Codec DevelopmentBitstream ManipulationLow-level ProgrammingTesting and ValidationC programmingMakefile scripting
Daniil Cherednik
PROFILE
Daniil Cherednik
Worked on audio codec development and configuration management across FFmpeg/FFmpeg and ydb-platform/ydb-go-sdk repositories, focusing on reliability and usability. Delivered a configuration update in Go to enable Optimistic Unban by default, streamlining onboarding and reducing manual setup. In FFmpeg, addressed ATRAC3 encoding stability by correcting band calculations in C, ensuring accurate subband handling and aligning tests with actual codec behavior. Further improved audio processing by fixing CELT psychoacoustic analysis and packet sizing for Opus, and added a dedicated silence encoding test. Demonstrated expertise in C, Go, Makefile scripting, and low-level programming, emphasizing maintainable, testable, and production-ready code changes.
Overall Statistics
Feature vs Bugs
67%Features
Repository Contributions
4Total
Bugs
1
Commits
4
Features
2
Lines of code
127
Activity Months3
Your Network
238 peopleShared Repositories
238
Work History
May 2026
2 Commits • 1 Features
May 1, 2026Month: 2026-05 Concise monthly summary focusing on key accomplishments, with business value and technical achievements for FFmpeg/FFmpeg.
2 Commits • 1 Features
May 1, 2026Month: 2026-05 Concise monthly summary focusing on key accomplishments, with business value and technical achievements for FFmpeg/FFmpeg.
May 2026
August 2025
1 Commits
Aug 1, 2025August 2025 (FFmpeg/FFmpeg): Stability improvement for ATRAC3 encoding by correcting the band calculation in the hybrid filterbank. Fixed inconsistency in num_bands by adjusting the index used to access subband_tab, ensuring the encoded subbands reflect the correct count and align with test expectations. The change improves encoding accuracy, test reliability, and overall codec behavior across builds.
August 2025
1 Commits
Aug 1, 2025August 2025 (FFmpeg/FFmpeg): Stability improvement for ATRAC3 encoding by correcting the band calculation in the hybrid filterbank. Fixed inconsistency in num_bands by adjusting the index used to access subband_tab, ensuring the encoded subbands reflect the correct count and align with test expectations. The change improves encoding accuracy, test reliability, and overall codec behavior across builds.
July 2025
1 Commits • 1 Features
Jul 1, 2025July 2025 (2025-07): Delivered a core UX/configuration improvement in ydb-go-sdk by enabling Optimistic Unban by default. Updated the default from false to true via config/config.go, simplifying setup and reducing the need for manual configuration in optimistic unban flows. Commit: 8dc50d4ae5da6ca85708b6e536451bb15ab91446. No major bugs fixed this month. Impact: smoother onboarding, fewer configuration errors, and more predictable unban behavior in production. Technologies/skills demonstrated: Go, configuration management, feature flag defaults, code maintainability, and precise commit hygiene.
1 Commits • 1 Features
Jul 1, 2025July 2025 (2025-07): Delivered a core UX/configuration improvement in ydb-go-sdk by enabling Optimistic Unban by default. Updated the default from false to true via config/config.go, simplifying setup and reducing the need for manual configuration in optimistic unban flows. Commit: 8dc50d4ae5da6ca85708b6e536451bb15ab91446. No major bugs fixed this month. Impact: smoother onboarding, fewer configuration errors, and more predictable unban behavior in production. Technologies/skills demonstrated: Go, configuration management, feature flag defaults, code maintainability, and precise commit hygiene.
July 2025
Activity
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Quality Metrics
Correctness95.0%
Maintainability95.0%
Architecture90.0%
Performance85.0%
AI Usage20.0%
Skills & Technologies
Programming Languages
CGoMakefilePlaintext
Technical Skills
Audio Codec DevelopmentBitstream ManipulationC programmingConfiguration ManagementLow-level ProgrammingMakefile scriptingTesting and Validationaudio processingcodec developmenttesting
Repositories Contributed To
Overview of all repositories you've contributed to across your timeline
ydb-platform/ydb-go-sdk
Jul 2025 – Jul 2025
1 Month active
Languages Used
Go
Technical Skills
Configuration Management