diff --git a/plugins/prebuffer-mixin/src/main.ts b/plugins/prebuffer-mixin/src/main.ts
index f6f8957a7..65f08dc95 100644
--- a/plugins/prebuffer-mixin/src/main.ts
+++ b/plugins/prebuffer-mixin/src/main.ts
@@ -929,7 +929,7 @@ class PrebufferSession {
       }
       this.console.log(this.streamName, 'terminating rebroadcast due to inactivity');
       session.kill(new Error('stream inactivity'));
-    }, 30000);
+    }, 10000);
   }
 
   async handleRebroadcasterClient(options: {
diff --git a/plugins/prebuffer-mixin/src/rtsp-session.ts b/plugins/prebuffer-mixin/src/rtsp-session.ts
index 25a452e41..5c8c9c6ba 100644
--- a/plugins/prebuffer-mixin/src/rtsp-session.ts
+++ b/plugins/prebuffer-mixin/src/rtsp-session.ts
@@ -127,9 +127,12 @@ export async function startRtspSession(console: Console, url: string, mediaStrea
                 const transport = setupResult.headers['transport'];
                 const match = transport.match(/.*?server_port=([0-9]+)-([0-9]+)/);
                 const [_, rtp, rtcp] = match;
-                const { hostname } = new URL(rtspClient.url);
-                udp.send(punch, parseInt(rtp), hostname)
-
+                const rtpPort = parseInt(rtp);
+                // have seen some servers return a server_port 0. should watch for bad data in any case.
+                if (rtpPort) {
+                    const { hostname } = new URL(rtspClient.url);
+                    udp.send(punch, rtpPort, hostname)
+                }
                 mapping[channel] = codec;
             }
             else {