1 files changed, 14 insertions, 6 deletions
diff --git a/app/client/live/whammy.js b/app/client/live/whammy.js
index 08a0ce9..762abca 100644
--- a/app/client/live/whammy.js
+++ b/app/client/live/whammy.js
@@ -541,12 +541,20 @@ module.exports = (function(){
   WhammyVideo.prototype.compile = function(outputAsArray, callback){
 
     this.encodeFrames(function(){
-
-      var webm = new toWebM(this.frames.map(function(frame){
-        var webp = parseWebP(parseRIFF(atob(frame.image.slice(23))));
-        webp.duration = frame.duration;
-        return webp;
-      }), outputAsArray);
+      var width = 0
+      var height = 0
+      var webm = new toWebM(
+        this.frames.map(function(frame){
+          var webp = parseWebP(parseRIFF(atob(frame.image.slice(23))));
+          webp.duration = frame.duration;
+          if (! webp || !webp.width || !webp.height) return null
+          if (! width) width = webp.width
+          else if (width !== webp.width) return null
+          if (! height) height = webp.height
+          else if (height !== webp.height) return null
+          return webp;
+        }).filter(function(frame){ return !!frame })
+      , outputAsArray);
       callback(webm);
       
     }.bind(this));