Tizen Developers

Hello fellow Tizen devs, I'm trying to use avplay to play udp or rtp stream on LynkCloud page with:

 <script type="text/javascript" src="$WEBAPIS/avplayextension/avplayextension.js">
      ............              
       webapis.avplay.open(url);
</script>

the script will give error "Failed to load resource: the server responded with a status of 404".

If I try to remove the src="$WEBAPIS/avplayextension/avplayextension.js", I will get error "Cannot read properties of undefined (reading 'open')".

Sorry for my bad English, any help is appreciate!