Only send PLIs for video tracks in examples

examples/simulcast/main.go

@@ -111,6 +111,7 @@ func main() {
 
 		// Start reading from all the streams and sending them to the related output track
 		rid := track.RID()
+		if track.Kind() == webrtc.RTPCodecTypeVideo {
 			go func() {
 				ticker := time.NewTicker(3 * time.Second)
 				defer ticker.Stop()
@@ -121,6 +122,7 @@ func main() {
 					}
 				}
 			}()
+		}
 		for {
 			// Read RTP packets being sent to Pion
 			packet, _, readErr := track.ReadRTP()

examples/swap-tracks/main.go

@@ -119,10 +119,12 @@ func main() { // nolint:gocognit
 				// If just switched to this track, send PLI to get picture refresh
 				if !isCurrTrack {
 					isCurrTrack = true
+					if track.Kind() == webrtc.RTPCodecTypeVideo {
 						if writeErr := peerConnection.WriteRTCP([]rtcp.Packet{&rtcp.PictureLossIndication{MediaSSRC: uint32(track.SSRC())}}); writeErr != nil {
 							fmt.Println(writeErr)
 						}
 					}
+				}
 				packets <- rtp
 			} else {
 				isCurrTrack = false