From 28a8a2217aae0ca584280e62387b40c31fe3a9ca Mon Sep 17 00:00:00 2001
From: Alan Trebugeais <alan.trebugeais@epitech.eu>
Date: Sat, 9 May 2026 20:45:14 +0200
Subject: [PATCH] add normalized gain variable

---
 src/lib/exporter/audioEncoder.ts       | 6 +++---
 src/lib/exporter/audioRoutingEngine.ts | 4 ++--
 2 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/src/lib/exporter/audioEncoder.ts b/src/lib/exporter/audioEncoder.ts
index ec42cf83..72015b5f 100644
--- a/src/lib/exporter/audioEncoder.ts
+++ b/src/lib/exporter/audioEncoder.ts
@@ -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);
 
diff --git a/src/lib/exporter/audioRoutingEngine.ts b/src/lib/exporter/audioRoutingEngine.ts
index cdba5777..3fc3285f 100644
--- a/src/lib/exporter/audioRoutingEngine.ts
+++ b/src/lib/exporter/audioRoutingEngine.ts
@@ -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),