Optimize streaming latency: remove -re flag, add keyframe settings, reduce HLS segments, faster ICE timeout

squashkiwi-streaming/config/mediamtx.yml

@@ -22,8 +22,8 @@ rtspTransports: [tcp, udp]
 hls: yes
 hlsAddress: :8888
 hlsAllowOrigin: '*'
-hlsSegmentCount: 10
+hlsSegmentCount: 3
-hlsSegmentDuration: 2s
+hlsSegmentDuration: 1s
 hlsPartDuration: 200ms
 hlsAlwaysRemux: yes
 

squashkiwi-streaming/config/transcoder/transcoder.sh

@@ -9,7 +9,6 @@ fi
 
 # Start ffmpeg with drawtext filter for score overlay
 exec ffmpeg \
-    -re \
     -rtsp_transport tcp \
     -i rtsp://localhost:8554/court \
     -vf "drawtext=fontfile=/usr/share/fonts/truetype/dejavu/DejaVuSans-Bold.ttf:\
@@ -25,7 +24,11 @@ y=10" \
     -c:v libx264 \
     -preset ultrafast \
     -tune zerolatency \
+    -g 30 \
+    -keyint_min 30 \
     -b:v 2M \
+    -maxrate 2M \
+    -bufsize 1M \
     -f rtsp \
     -rtsp_transport tcp \
     rtsp://localhost:8554/court_h264

squashkiwi-streaming/config/web/webrtc.html

@@ -230,8 +230,8 @@
                             resolve();
                         }
                     };
-                    // Timeout after 2 seconds
+                    // Timeout after 500ms for faster connection
-                    setTimeout(resolve, 2000);
+                    setTimeout(resolve, 500);
                 }
             });