EXCEEDS logo
Exceeds
StefanGilligan

PROFILE

Stefangilligan

Worked on the flutter/packages repository to resolve HDR tone-mapping issues in iOS video playback within Flutter applications. Addressed washed-out highlights and desaturation by applying BT.709 color properties to AVPlayerItemVideoOutput, ensuring accurate tone-mapping for HDR sources such as HLG, PQ, and Dolby Vision. Utilized Objective-C and Swift to update output settings handling, including renaming an internal factory for clarity and maintainability. Added a regression-preventing unit test to strengthen test coverage and performed manual validation on iPhone devices with HDR clips. This work improved video quality, reliability, and platform parity for HDR video experiences in Flutter using video processing expertise.

Overall Statistics

Feature vs Bugs

0%Features

Repository Contributions

1Total
Bugs
1
Commits
1
Features
0
Lines of code
68
Activity Months1

Work History

May 2026

1 Commits

May 1, 2026

May 2026: Flutter packages — HDR tone-mapping fix for iOS HDR video playback in the video_player workflow. Implemented BT.709 color properties for AVPlayerItemVideoOutput to correctly tone-map HDR sources (HLG, PQ, Dolby Vision) into Flutter textures, addressing washed-out highlights and desaturation. Added regression-preventing unit test and updated output settings handling (internal factory renamed to videoOutputWithOutputSettings). Performed manual validation on iPhone with HDR clips; SDR content unaffected. Result: improved end-user video quality, reliability, and platform parity in Flutter HDR video experiences, with stronger test coverage and maintenance clarity.

Activity

Loading activity data...

Quality Metrics

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

Skills & Technologies

Programming Languages

Objective-CSwift

Technical Skills

FlutterVideo ProcessingiOS Development

Repositories Contributed To

1 repo

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

flutter/packages

May 2026 May 2026
1 Month active

Languages Used

Objective-CSwift

Technical Skills

FlutterVideo ProcessingiOS Development