RTSP为什么VLC播放器无法播放

rtsp_tracepoint: rtspservice.c,RTSP_state_machine,1391
state_machine:current state is  ready state
current method code is:5
        +++++++++++++++++++++
        start to play 0 now!
        +++++++++++++++++++++
(Send to client:)
RTSP/1.0 200 OK
CSeq: 5
Server: sunshine/1.11
Date: Thu, 01 Jan 1970 00:21:12 GMT
Session: 117750


        Start Playing!
leaving rtsp_state_machine!
exit Rtsp_state_machine
4
OUTPUT_BUFFER length 105
RTSP/1.0 200 OK
CSeq: 5
Server: sunshine/1.11
Date: Thu, 01 Jan 1970 00:21:12 GMT
Session: 117750

rtsp_tracepoint: rtspservice.c,RTSP_state_machine,1368
state_machine:current state is  ready state
current method code is:5
        +++++++++++++++++++++
        start to play 0 now!
        +++++++++++++++++++++
(Send to client:)
RTSP/1.0 200 OK
CSeq: 6
Server: sunshine/1.11
Date: Thu, 01 Jan 1970 00:18:12 GMT
Session: 213937


        Start Playing!
leaving rtsp_state_machine!
exit Rtsp_state_machine
4
5
192.168.1.20 Port:12718
INPUT_BUFFER was:TEARDOWN rtsp://192.168.1.10/test.264/ RTSP/1.0
CSeq: 7
User-Agent: LibVLC/2.2.8 (LIVE555 Streaming Media v2016.02.22)
Session: 213937

leaving rtsp_state_machine!
exit Rtsp_state_machine
4
5

正常的不会出现那个5，
可能问题①最终换播放器，问题解决
②数据包里没有I帧，检查RTP包头