Fix RTP H264 with two SEI in packet

pkg/h264/rtp.go

@@ -36,6 +36,7 @@ func RTPDepay(track *streamer.Track) streamer.WrapperFunc {
 			}
 
 			if len(buf) == 0 {
+				for {
 					// Amcrest IP4M-1051: 9, 7, 8, 6, 28...
 					// Amcrest IP4M-1051: 9, 6, 1
 					switch NALUType(payload) {
@@ -52,10 +53,9 @@ func RTPDepay(track *streamer.Track) streamer.WrapperFunc {
 						}
 
 						payload = payload[i:]
-
-					if NALUType(payload) == NALUTypeIFrame {
-						buf = append(buf, ps...)
+						continue
 					}
+					break
 				}
 			}