webadderall f024c89890 fix: always apply aresample sync filter and tighten audio sync tolerances ...

- Always route audio through aresample=async=1:first_pts=0 filter during
  muxing on both macOS and Windows, even when duration delta is small.
  Previously skipped when delta ≤50ms, which left progressive clock drift
  (from CPU load) completely uncorrected.
- Lower sync detection threshold from 50ms to 20ms so tempo correction
  kicks in earlier.
- Use explicit 48kHz AudioContext sample rate in both browser recording
  and export rendering to prevent sample rate mismatch drift.
- Reduce MediaRecorder timeslice from 1000ms to 250ms to reduce chunk
  loss under CPU pressure.
- Tighten export audio sync: seek threshold 300ms→150ms, tolerance
  15ms→8ms, correction window 2s→0.5s, max adjustment ±8%→±12%.
- Lower companion audio start delay threshold from 50ms to 25ms.

2026-04-18 19:03:36 +10:00

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binary.ts

…

filters.ts

fix: always apply aresample sync filter and tighten audio sync tolerances

2026-04-18 19:03:36 +10:00