<xr-scene ar-system="modes:Marker" bind:ready="handleReady">   <xr-assets bind:progress="handleAssetsProgress" bind:loaded="handleAssetsLoaded">         <xr-asset-load       type="video-texture" asset-id="hikari1" options="loop:true"       src="https://www.xxx.comn/video/1.mp4"     />     <xr-asset-material asset-id="mat1" effect="video-tsbs" uniforms="u_baseColorMap: video-hikari1" />     <xr-asset-load       type="video-texture" asset-id="hikari2" options="loop:true"       src="https://www.xxx.comn/video/2.mp4"     />     <xr-asset-material asset-id="mat2" effect="video-tsbs" uniforms="u_baseColorMap: video-hikari2" />  </xr-assets> </xr-scene>