Show static image if wall video missing (#849)

ui/v2.5/src/components/Changelog/versions/v040.md

@@ -6,6 +6,7 @@
 * Add selective scene export.
 
 ### 🎨 Improvements
+* Show static image on scene wall if preview video is missing.
 * Add path filter to scene and gallery query.
 * Add button to hide left panel on scene page.
 * Add link to parent studio in studio page.

ui/v2.5/src/components/Wall/WallItem.tsx

@@ -46,14 +46,6 @@ const Preview: React.FC<{
 
   if (!previews) return <div />;
 
-  if (isMissing) {
-    return (
-      <div className="wall-item-media wall-item-missing">
-        Pending preview generation
-      </div>
-    );
-  }
-
   const image = (
     <img
       alt=""
@@ -81,6 +73,19 @@ const Preview: React.FC<{
     />
   );
 
+  if (isMissing) {
+    // show the image if the video preview is unavailable
+    if (previews.image) {
+      return image;
+    }
+
+    return (
+      <div className="wall-item-media wall-item-missing">
+        Pending preview generation
+      </div>
+    );
+  }
+
   if (previewType === "video") {
     return video;
   }