取消预览图自动下载

docs/thumbnail/js/common.js

@@ -60,9 +60,7 @@
     thumbnail.on('video', function(video) {
         console.log('Video size: ' + video.videoWidth + ' x ' + video.videoHeight);
         console.log('Video duration: ' + video.duration + 's');
-        thumbnail.setup(getConfig()).start().then(() => {
-            thumbnail.download();
-        });
+        thumbnail.setup(getConfig()).start();
     });
 
     thumbnail.on('canvas', function(canvas) {