Implement chat-visual: Twitch-style JSONL stream replay app - #2

Draft

hugh-codes with Copilot wants to merge 10 commits into

mainfrom

copilot/start-implementation-video-app

Commits on Mar 26, 2026

Initial plan
Copilot
committed
Implement chat-visual React app for JSONL stream replay

Copilot
and
hugh-codes
committed
downgrade Vite to 6.x to fix rolldown native binding error on macOS

Copilot
and
hugh-codes
committed
fix reactions timing, add video player with large-file support, move chat to overlay

Copilot
and
hugh-codes
committed
remove chat window: transparent overlay with reactions + messages, fix reactions bug, add export WebM

Copilot
and
hugh-codes
committed
fix reactions null-timestamp bug; fast offline MP4 export via WebCodecs (no need to replay video)

Copilot
and
hugh-codes
committed
fix(parseJsonl): normalize second-unit timestamps to ms to stop reactions flooding at start

Copilot
and
hugh-codes
committed
chore: install mediabunny

Copilot
and
hugh-codes
committed
feat: speed up export — migrate mp4-muxer → Mediabunny, run encode in Web Worker

Copilot
and
hugh-codes
committed
feat: composite export — source video + chat overlay + audio pass-through

Copilot
and
hugh-codes
committed