Update app.py

app.py

@@ -780,12 +780,16 @@ async(c, o, p, d, n, m, s)=>{
         });
 
         videoDome.videoTexture.video.oncanplaythrough = function () {
+          document.getElementById('seek').innerHTML = '';
+          for (var i=0; i<videoDome.videoTexture.video.duration; i++) {
+            document.getElementById('seek').innerHTML += '<a href="#" onclick="seek('+i+');">'+i+'</a> ';
+          }
           play();
           videoDome.videoTexture.video.oncanplaythrough = null;
           video.oncanplaythrough = null;
         };
 
-        var debugLayer = BABYLON.Engine.LastCreatedScene.debugLayer.show(); 
+        var debugLayer = BABYLON.Engine.LastCreatedScene.debugLayer.show();
         
         
         if (document.getElementById("model")) {
@@ -956,13 +960,13 @@ function seek(t) {
   videoDome.videoTexture.video.pause();
   video.pause();
   
-  videoDome.videoTexture.video.currentTime += t;
+  videoDome.videoTexture.video.currentTime = t;
   if (videoDome.videoTexture.video.currentTime > videoDome.videoTexture.video.duration) {
     videoDome.videoTexture.video.currentTime = videoDome.videoTexture.video.duration;
   } else if (videoDome.videoTexture.video.currentTime < 0) {
     videoDome.videoTexture.video.currentTime = 0;
   }
-  video.currentTime += t;
+  video.currentTime = t;
   if (video.currentTime > video.duration) {
     video.currentTime = video.duration;
   } else if (video.currentTime < 0) {
@@ -1310,8 +1314,7 @@ with gr.Blocks(css=css, js=js, head=head) as demo:
               <a href='#' onclick='snapshot();'>Screenshot</a>
               <a href='#' onclick='record_video();'>Record</a>
               <a href='#' onclick='stop_recording();'>Stop rec.</a>
-              <a href='#' onclick='seek(-1);'>Back</a> <a href='#' onclick='seek(1);'>Fwd</a>
-              <a href='#' onclick='play();'>Play</a><br/>
+              <span id='seek'></span> <a href='#' onclick='play();'>Play</a><br/>
               <img src='' id='img_out' onload='var ctxt = document.getElementById(\"cnv_out\").getContext(\"2d\");ctxt.drawImage(this, 0, 0);'/><br/>
               <canvas id='cnv_out'></canvas>
               <div id='compass_box'><div id='compass'><a id='fullscreen' onclick='