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.