diff --git a/client.go b/client.go
index 299ec0c7..3a5fc2de 100644
--- a/client.go
+++ b/client.go
@@ -1229,7 +1229,10 @@ func (c *Client) do(req *base.Request, skipResponse bool) (*base.Response, error
 		c.session = sx.Session
 
 		if sx.Timeout != nil && *sx.Timeout > 0 {
-			c.keepAlivePeriod = time.Duration(*sx.Timeout) * time.Second * 8 / 10
+			c.keepAlivePeriod = max(
+				(time.Duration(*sx.Timeout)*time.Second)-5*time.Second,
+				1*time.Second,
+			)
 		}
 	}
 
diff --git a/client_play_test.go b/client_play_test.go
index 83e8d28e..382ca011 100644
--- a/client_play_test.go
+++ b/client_play_test.go
@@ -3908,7 +3908,7 @@ func TestClientPlayBackChannel(t *testing.T) {
 					}
 					return ptrOf(ProtocolUDP)
 				}(),
-				senderReportPeriod:   500 * time.Millisecond,
+				senderReportPeriod:   750 * time.Millisecond,
 				receiverReportPeriod: 750 * time.Millisecond,
 			}
 
diff --git a/server_session.go b/server_session.go
index 9c1d5c93..777afd67 100644
--- a/server_session.go
+++ b/server_session.go
@@ -882,9 +882,14 @@ func (ss *ServerSession) runInner() error {
 						res.Header = make(base.Header)
 					}
 
+					// Media Foundation-based software, like Windows Media Player,
+					// send keepalives at an interval equal the timeout value.
+					// prevent timeouts by subtracting 5 seconds from the value.
+					timeout := max(int(ss.s.IdleTimeout/time.Second)-5, 1)
+
 					res.Header["Session"] = headers.Session{
 						Session: ss.secretID,
-						Timeout: ptrOf(uint(ss.s.IdleTimeout / time.Second)),
+						Timeout: ptrOf(uint(timeout)),
 					}.Marshal()
 				}