Alleggerisce il relay YouTube e rilascia Android 2.0.8.

ffmpeg fa solo remux copy A/V; le app fissano AAC 48 kHz mono; sync deploy non cancella più garage.prod.toml.

Co-authored-by: Cursor <cursoragent@cursor.com>

native/ios/MatchLiveTv/Streaming/LiveBroadcastEngine.swift

@@ -214,6 +214,14 @@ final class LiveBroadcastEngine: ObservableObject {
         if let microphone = AVCaptureDevice.default(for: .audio) {
             try await mixer.attachAudio(microphone, track: 0)
         }
+        // AAC 48 kHz mono — allineato ad Android, slate MediaMTX e YoutubeRelay (-c:a copy).
+        try await mixer.setAudioMixerSettings(
+            AudioMixerSettings(
+                sampleRate: BroadcastConfig.audioSampleRateHz,
+                channels: BroadcastConfig.audioChannels,
+                tracks: [0: AudioMixerTrackSettings(downmix: true, channelMap: [0])]
+            )
+        )
         if let camera = AVCaptureDevice.default(.builtInWideAngleCamera, for: .video, position: .back) {
             try await mixer.attachVideo(camera, track: 0) { videoUnit in
                 videoUnit.isVideoMirrored = false
@@ -355,10 +363,10 @@ final class LiveBroadcastEngine: ObservableObject {
         var audioSettings = await stream.audioSettings
         audioSettings = AudioCodecSettings(
             bitRate: config.audioBitrate,
-            downmix: audioSettings.downmix,
-            channelMap: audioSettings.channelMap,
-            sampleRate: 48_000,
-            format: audioSettings.format
+            downmix: true,
+            channelMap: [0],
+            sampleRate: BroadcastConfig.audioSampleRateHz,
+            format: .aac
         )
         try await stream.setAudioSettings(audioSettings)
     }