增加海康sdk设置高精度ptz信息

‘liusuyi’

2023-12-13 a0d9d5ccd33aa09b4624fdfd2dd3269a9b82ba83

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var webrtcConfig = {
    url: "",
    options: "rtptransport=tcp&timeout=60",
    layoutextraoptions: "&width=320&height=0",
    defaultvideostream: "Bunny"
}