Q:上级平台和下级平台国标级联,客户端预览监控点编号为00000000001310011328的点位时黑屏
环境:走国标级联,UDP预览
排查过程:
1、抓上下级之间的包,没有发现严重丢包和乱序
![](https://images2017.cnblogs.com/blog/1099748/201801/1099748-20180107201506471-1997368287.png)
2、将RTP包保存为码流,VLC不能播放,elecard也无法播放,猜测:码流有问题
![](https://images2017.cnblogs.com/blog/1099748/201801/1099748-20180107201859581-615838798.png)
![](https://images2017.cnblogs.com/blog/1099748/201801/1099748-20180107201908924-1045881436.png)
3、继续分析,发现是码流缺少PES头,而国标的码流标准是ES+PES+RTP,参考《国标28181视频流分析》
![](https://images2017.cnblogs.com/blog/1099748/201801/1099748-20180107202229706-1022908900.png)
Q:上级平台和下级平台国标级联,客户端预览监控点编号为00000000001310011328的点位时黑屏
环境:走国标级联,UDP预览