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add normalized gain variable

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This commit is contained in:
Alan Trebugeais
2026-05-09 20:45:14 +02:00
parent bac15c9929
commit 28a8a2217a
2 changed files with 5 additions and 5 deletions
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src/lib/exporter/audioEncoder.ts
+3 -3
View File
@@ -14,6 +14,7 @@ import { estimateCompanionAudioStartDelaySeconds } from "@/lib/mediaTiming";
import { resolveMediaElementSource } from "./localMediaSource";
import type { VideoMuxer } from "./muxer";
import { resolveSourceTrackRoutingPolicy } from "./sourceTrackRoutingPolicy";
import { SOURCE_AUDIO_NORMALIZE_GAIN } from "@/components/video-editor/audio/audioTypes";
const AUDIO_BITRATE = 128_000;
const DECODE_BACKPRESSURE_LIMIT = 20;
@@ -23,7 +24,6 @@ const MP4_AUDIO_CODEC = "mp4a.40.2";
const OFFLINE_AUDIO_SAMPLE_RATE = 48_000;
const OFFLINE_ENCODE_CHUNK_FRAMES = 1024;
const OFFLINE_CHUNK_DURATION_SEC = 30;
const USER_AUDIO_NORMALIZE_GAIN = 1.35;
function resolveSourceTrackGain(
sourceAudioTrackSettings: SourceAudioTrackSettings | undefined,
@@ -33,7 +33,7 @@ function resolveSourceTrackGain(
if (!settings) {
return 1;
}
const normalizeGain = settings.normalize ? USER_AUDIO_NORMALIZE_GAIN : 1;
const normalizeGain = settings.normalize ? SOURCE_AUDIO_NORMALIZE_GAIN : 1;
return Math.max(0, Math.min(2, settings.volume * normalizeGain));
}
@@ -943,7 +943,7 @@ export class AudioProcessor {
if (duration <= 0.001) return;
const gainNode = ctx.createGain();
const normalizeGain = region.normalize ? USER_AUDIO_NORMALIZE_GAIN : 1;
const normalizeGain = region.normalize ? SOURCE_AUDIO_NORMALIZE_GAIN : 1;
gainNode.gain.value = Math.max(0, Math.min(1, region.volume * normalizeGain));
gainNode.connect(ctx.destination);
src/lib/exporter/audioRoutingEngine.ts
+2 -2
View File
@@ -1,9 +1,9 @@
import type { AudioRegion } from "@/components/video-editor/types";
import { SOURCE_AUDIO_NORMALIZE_GAIN } from "@/components/video-editor/audio/audioTypes";
import { resolveSourceAudioFallbackPaths } from "./sourceAudioFallback";
export type SourceTrackId = "mic" | "system" | "mixed";
export type ResolvedAudioTrackKind = "user" | "system" | "mic" | "mixed" | "embedded";
const USER_AUDIO_NORMALIZE_GAIN = 1.35;
export interface ResolvedAudioTrack {
id: string;
@@ -77,7 +77,7 @@ export function buildResolvedAudioPlan(input: {
path: region.audioPath,
startDelayMs: 0,
},
gain: clampGain(region.volume * (region.normalize ? USER_AUDIO_NORMALIZE_GAIN : 1), 1),
gain: clampGain(region.volume * (region.normalize ? SOURCE_AUDIO_NORMALIZE_GAIN : 1), 1),
timelineBinding: {
startMs: Math.max(0, region.startMs),
endMs: Math.max(0, region.endMs),