流媒体随笔

[技术咨询] GB28181以UDP方式收流的性能问题 · Issue #961 · ZLMediaKit/ZLMediaKit · GitHub

ubuntu下抓包显示

tcpdump -i ens160 -nnA 'port 5060'

tcpdump -i ens160 -nnA 'port 10000'

ubuntu下抓包保存

tcpdump -w 20120606.pcap -i ens160 port 10000

语音广播通知
对讲流程：https://blog.csdn.net/wgg_126/article/details/115373068
海康实现：https://blog.csdn.net/qq_38795209/article/details/110953058)

ffmpeg.exe -i rtsp://admin:thzn123456@192.168.0.11:554/h264/ch1/main/av_stream -acodec copy -vcodec copy -f flv ./111.flv

GB28181主码流子码流

GB/T28181 视频预览如何选择主码流还是子码流_=蜗牛=的博客-CSDN博客_主码流和子码流怎么设置

chrome://flags/

浏览器硬解码设置未打开，具体开启操作：打开网站chrome://flags/#enable-experimental-web-platform-features，将Experimental Web Platform features选项置为Enabled，重启浏览器后再开启

抓包过滤条件

sip contains 3402000000200000001 && sip contains INVITE

在web上播放H265 mp4方案（ffmpeg把H265文件转成H264，在web上就能直接播放）

ffmpeg -i test.MP4 -c:v libx264 output.mp4

LivePlayer H5

http://cloud.liveqing.com:18000/#/liveplayer

https://www.liveqing.com/docs/manuals/LivePlayer.html#%E5%B1%9E%E6%80%A7-property

https://www.liveqing.com/docs/download/LivePlayer.html

// 快进200秒

<live-player id="player01" video-url="http://192.168.0.51:10021/sms/34020000002020000001/record/34020000001110000087_34020000001320000111/20220830/20220830170000/34020000001110000087_34020000001320000111_record.m3u8" live="false" aspect="16:9" stretch="true">
<div style="position:absolute;left:15px;top:15px;color:#FFF;">自定义叠加层</div>
</live-player>

var player = document.getElementById('player01');
player.getVueInstance().setCurrentTime('200');