From b56ecdb1457c6c995f65bc16b306d94f8cf9aaf2 Mon Sep 17 00:00:00 2001
From: Michael SCHAL <michaelschal@gmail.com>
Date: Sat, 6 Dec 2025 16:48:57 +0100
Subject: [PATCH] feat: add initial Dart server implementation with API
 routing, Xtream proxy, static file serving, and streaming support.

---
 bin/server.dart | 12 ++++++++----
 1 file changed, 8 insertions(+), 4 deletions(-)

diff --git a/bin/server.dart b/bin/server.dart
index e710bb2..c81a279 100644
--- a/bin/server.dart
+++ b/bin/server.dart
@@ -497,11 +497,15 @@ Handler _createStreamHandler() {
       final usePassthrough = mode == 'direct';
       
       if (usePassthrough) {
-        // PASSTHROUGH MODE: Copy streams without re-encoding (0% CPU)
-        // Only works if source is H.264/AAC compatible with browsers
+        // PASSTHROUGH MODE: Copy video, but transcode audio to AAC
+        // Most IPTV streams use AC3/MP3 audio which browsers can't play in HLS
+        // Video copy = 0% CPU, audio transcode = ~5% CPU (still very light)
         ffmpegArgs.addAll([
-          '-c:v', 'copy',  // Copy video stream as-is
-          '-c:a', 'copy',  // Copy audio stream as-is
+          '-c:v', 'copy',  // Copy video stream as-is (H.264)
+          '-c:a', 'aac',   // Transcode audio to AAC (browser compatible)
+          '-b:a', '128k',  // Audio bitrate
+          '-ar', '44100',  // Sample rate
+          '-ac', '2',      // Stereo
           '-bsf:v', 'h264_mp4toannexb',  // Convert to Annex B format for HLS
         ]);
       } else {