print path when file not found

src/main/java/jvc/model/info/JMediaInfo.java

@@ -82,11 +82,15 @@ public class JMediaInfo {
                     .setWidth(image.width());
 
         } else {
-            return die("initFormat: no media tracks could be found in file");
+            return die("initFormat: no media tracks could be found in file: "+ref());
         }
         return format;
     }
 
+    public String ref() {
+        return emptyMedia() ? "(null media)" : empty(getMedia().getRef()) ? "(null ref)" : getMedia().getRef();
+    }
+
     public BigDecimal duration() {
         if (emptyMedia()) return ZERO;