Fix whep's memory leak (#15)

config.toml

@@ -7,6 +7,6 @@ disk_ram = true
 [docker]
 mode=false
 [mp4]
-record=false
+record=true
 [ebml]
-record=false
+record=false

media/streamer/egress/record/mp4/handler.go

@@ -94,7 +94,6 @@ func (m *MP4) Start(ctx context.Context, source hub.Source) error {
 				if !m.splitPending && data.H264Video.RawDTS()-m.lastSplitTime >= m.splitIntervalMS {
 					m.splitPending = true
 				}
-
 			}
 
 			if data.H264Video != nil {

media/streamer/egress/whep/whep.go

@@ -169,13 +169,21 @@ func (w *WHEP) syncAndSendPackets() error {
 		// Remove lagging packet from buffer
 		if videoPacket.timestamp <= audioPacket.timestamp {
 			// If audio is ahead, remove video from buffer
-			w.videoBuffer = w.videoBuffer[1:]
+			if len(w.videoBuffer) > 100 {
+				w.videoBuffer = append([]*packetWithTimestamp{}, w.videoBuffer[1:]...)
+			} else {
+				w.videoBuffer = w.videoBuffer[1:]
+			}
 			if err := w.videoTrack.WriteRTP(videoPacket.packet); err != nil {
 				return err
 			}
 		} else {
 			// If video is ahead, remove audio from buffer
-			w.audioBuffer = w.audioBuffer[1:]
+			if len(w.audioBuffer) > 100 {
+				w.audioBuffer = append([]*packetWithTimestamp{}, w.audioBuffer[1:]...)
+			} else {
+				w.audioBuffer = w.audioBuffer[1:]
+			}
 			if err := w.audioTrack.WriteRTP(audioPacket.packet); err != nil {
 				return err
 			}