Update app.py

app.py

@@ -772,7 +772,7 @@ async(c, o, p, d, n, m, s)=>{
 
         function requestMap() {
         try {
-        alert(document.getElementById("depth_video").getElementsByTagName("video")[0]);
+        alert(video.videoWidth);
         alert(ctx);
           ctx.drawImage(video, 0, 0, video.videoWidth, video.videoHeight);
           if (buffer) {
@@ -798,8 +798,6 @@ async(c, o, p, d, n, m, s)=>{
           ctx = canvas.getContext("2d", { willReadFrequently: true });
           
           videoPlay();
-          videoDome.videoTexture.video.oncanplaythrough = null;
-          video.oncanplaythrough = null;
         };
 
         //var debugLayer = BABYLON.Engine.LastCreatedScene.debugLayer.show();
@@ -989,6 +987,9 @@ function seek(t) {
 window.seek = seek;
 
 function videoPlay() {
+  videoDome.videoTexture.video.oncanplaythrough = null;
+  video.oncanplaythrough = null;
+
   videoDome.videoTexture.video.loop = true;
   video.loop = true;
   videoDome.videoTexture.video.play();