LlamaCasty

Author SHA1 Message Date

Author	SHA1	Message	Date
gramps	724af1499b	fix: audio silence (idempotent sync-delay configure), webcam gray block, truncated videos - AudioSyncDelay.Configure reallocated/zeroed its buffer every ~10ms tick (AudioMixer re-reads the UI setting each mix), so any non-zero sync offset erased the just-written audio -> total silence. Now early-returns when the delay samples are unchanged. Regression test proven both ways. - SceneCompositor.BlitContentRaw defaulted cbW/cbH=0 when CropBounds is null (regression from `ed9d7c1`) -> webcam blit to an empty rect = gray block. Default to src.Width/Height. Regression test proven both ways. - Truncated recordings: rawvideo mux stamps frames at declared 60fps by arrival; a scene whose first layer is dynamic (hidden elements still count) kills the bake cache -> full render ~35ms -> ~27fps submitted -> halved file length. Static scenes bake once (246ms cold, then <1ms) -> 60fps, full-length (probe + 13:53 take, 301/300 per 5s, 12.46s file from 12.3s wall). FramePump.ProbeRender names the hot render path on slow frames.	2026-09-12 13:56:55 -07:00
gramps	e8ff4df05f	TASK 22: global audio sync offset (positive delay at the mixer out) Adds AudioSyncOffsetMs (0..500ms, default 0) that delays the whole interleaved-stereo mix so audio lands on the video when it runs ahead — OBS's documented lip-sync fix. Positive-only: advancing audio needs a video-side delay and is out of the audio layer's scope. - Services/Audio/AudioSyncDelay.cs: pure delay line, flushed on Configure - AudioMixer: Func<int> syncOffsetMs seam + delay applied post-limiter - LayoutStore.Settings + MainViewModel.Audio/VM: load/save + binding - PreviewPane mic bar: SYNC slider + status dot (IntToSyncBrushConverter) - AudioSyncDelayTests: identity, negative/beyond-500 clamps, 10ms→960 samples Reference (external scan): https://obs-versions.com/blog/how-to-fix-audio-delay-on-obs (audio ahead => positive delay). Verified: build 0 warnings; 3/3 delay tests pass.	2026-08-31 18:30:03 -07:00

724af1499b

fix: audio silence (idempotent sync-delay configure), webcam gray block, truncated videos

- AudioSyncDelay.Configure reallocated/zeroed its buffer every ~10ms tick
  (AudioMixer re-reads the UI setting each mix), so any non-zero sync offset
  erased the just-written audio -> total silence. Now early-returns when the
  delay samples are unchanged. Regression test proven both ways.
- SceneCompositor.BlitContentRaw defaulted cbW/cbH=0 when CropBounds is null
  (regression from ed9d7c1) -> webcam blit to an empty rect = gray block.
  Default to src.Width/Height. Regression test proven both ways.
- Truncated recordings: rawvideo mux stamps frames at declared 60fps by
  arrival; a scene whose first layer is dynamic (hidden elements still count)
  kills the bake cache -> full render ~35ms -> ~27fps submitted -> halved
  file length. Static scenes bake once (246ms cold, then <1ms) -> 60fps,
  full-length (probe + 13:53 take, 301/300 per 5s, 12.46s file from 12.3s
  wall). FramePump.ProbeRender names the hot render path on slow frames.

2026-09-12 13:56:55 -07:00

gramps

e8ff4df05f

TASK 22: global audio sync offset (positive delay at the mixer out)

Adds AudioSyncOffsetMs (0..500ms, default 0) that delays the whole
interleaved-stereo mix so audio lands on the video when it runs ahead —
OBS's documented lip-sync fix. Positive-only: advancing audio needs a
video-side delay and is out of the audio layer's scope.

- Services/Audio/AudioSyncDelay.cs: pure delay line, flushed on Configure
- AudioMixer: Func<int> syncOffsetMs seam + delay applied post-limiter
- LayoutStore.Settings + MainViewModel.Audio/VM: load/save + binding
- PreviewPane mic bar: SYNC slider + status dot (IntToSyncBrushConverter)
- AudioSyncDelayTests: identity, negative/beyond-500 clamps, 10ms→960 samples

Reference (external scan): https://obs-versions.com/blog/how-to-fix-audio-delay-on-obs
(audio ahead => positive delay). Verified: build 0 warnings; 3/3 delay tests pass.

2026-08-31 18:30:03 -07:00

2 Commits