From 832658ad5822213fa4b97dc8e4c08e2fcc65e230 Mon Sep 17 00:00:00 2001
From: HenryDu8133 <813367384@qq.com>
Date: Sun, 2 Aug 2026 08:50:28 +0800
Subject: [PATCH] feat: apply 5x volume boost to all FFmpeg audio processing
 (broadcast sequences, HLS, DFPWM) to maximize loudness

---
 CloudServer/server.js | 11 ++++++-----
 1 file changed, 6 insertions(+), 5 deletions(-)

diff --git a/CloudServer/server.js b/CloudServer/server.js
index c90feed..29cd241 100644
--- a/CloudServer/server.js
+++ b/CloudServer/server.js
@@ -1289,7 +1289,7 @@ function buildSequenceWavFile(seq) {
     
     const inputs = files.map(f => `-i "${f}"`).join(' ');
     const filterResamples = files.map((_, i) => `[${i}:a]aformat=sample_rates=48000:channel_layouts=mono,aresample=48000[a${i}]`).join(';');
-    const filterConcat = files.map((_, i) => `[a${i}]`).join('') + `concat=n=${files.length}:v=0:a=1[a]`;
+    const filterConcat = files.map((_, i) => `[a${i}]`).join('') + `concat=n=${files.length}:v=0:a=1,volume=5.0[a]`;
     const filterComplex = `${filterResamples};${filterConcat}`;
 
     try {
@@ -1330,7 +1330,7 @@ function runFfmpegRtmpPush(streamName, seq) {
         const tmpAacPath = path.join(tmpDir, `prebuild-${Date.now()}-${Math.random().toString(16).slice(2)}.aac`);
         const inputs = files.map(f => `-i "${f}"`).join(' ');
         const filterResamples = files.map((_, i) => `[${i}:a]aformat=sample_rates=48000:channel_layouts=mono,aresample=48000[a${i}]`).join(';');
-        const filterConcat = files.map((_, i) => `[a${i}]`).join('') + `concat=n=${files.length}:v=0:a=1[a]`;
+        const filterConcat = files.map((_, i) => `[a${i}]`).join('') + `concat=n=${files.length}:v=0:a=1,volume=5.0[a]`;
         const filterComplex = `${filterResamples};${filterConcat}`;
 
         const buildArgs = [
@@ -1425,7 +1425,7 @@ function runFfmpegRtmpPush(streamName, seq) {
     }
 
     const filterResamples = files.map((_, i) => `[${i}:a]aformat=sample_rates=48000:channel_layouts=mono,aresample=48000[a${i}]`).join(';');
-    const filterConcat = files.map((_, i) => `[a${i}]`).join('') + `concat=n=${files.length}:v=0:a=1[a]`;
+    const filterConcat = files.map((_, i) => `[a${i}]`).join('') + `concat=n=${files.length}:v=0:a=1,volume=5.0[a]`;
     const filterComplex = `${filterResamples};${filterConcat}`;
 
     const args = [
@@ -2086,7 +2086,8 @@ function convertToDfpwm(filePath) {
         // -f s8: signed 8-bit pcm
         // -ac 1: mono
         // -ar 48000: 48kHz
-        execSync(`ffmpeg -y -v quiet -i "${filePath}" -f s8 -acodec pcm_s8 -ac 1 -ar 48000 "${rawPath}"`);
+        // -filter:a volume=5.0: boost volume significantly
+        execSync(`ffmpeg -y -v quiet -i "${filePath}" -filter:a volume=5.0 -f s8 -acodec pcm_s8 -ac 1 -ar 48000 "${rawPath}"`);
         
         if (fs.existsSync(rawPath)) {
             const buffer = fs.readFileSync(rawPath);
@@ -2714,7 +2715,7 @@ function buildTempBroadcastFromWav(prefixWavPath, contentWavPath) {
     const filterComplex = [
         '[0:a]aformat=sample_rates=48000:channel_layouts=mono,aresample=48000[a0]',
         '[1:a]aformat=sample_rates=48000:channel_layouts=mono,aresample=48000[a1]',
-        '[a0][a1]concat=n=2:v=0:a=1[a]'
+        '[a0][a1]concat=n=2:v=0:a=1,volume=5.0[a]'
     ].join(';');
 
     execSync(`ffmpeg -hide_banner -loglevel error -y -i "${prefixWavPath}" -i "${contentWavPath}" -filter_complex "${filterComplex}" -map "[a]" -ac 1 -ar 48000 -c:a pcm_s16le "${outWavPath}"`);