diff --git a/src/pages/detection-mixin.js b/src/pages/detection-mixin.js
index 2dbd615..594fada 100644
--- a/src/pages/detection-mixin.js
+++ b/src/pages/detection-mixin.js
@@ -175,7 +175,7 @@ export default {
       imageCtx.clearRect(0,0,imCanvas.width,imCanvas.height)
       var imgWidth
       var imgHeight
-      const imgAspect = vidData.clientWidth / vidData.clientHeight
+      const imgAspect = vidData.width / vidData.height
       const rendAspect = imCanvas.width / imCanvas.height
       if (imgAspect >= rendAspect) {
         imgWidth = imCanvas.width