Index: openacs-4/packages/proctoring-support/lib/proctored-page.adp
===================================================================
RCS file: /usr/local/cvsroot/openacs-4/packages/proctoring-support/lib/proctored-page.adp,v
diff -u -r1.1.2.2 -r1.1.2.3
--- openacs-4/packages/proctoring-support/lib/proctored-page.adp	11 Aug 2020 09:05:49 -0000	1.1.2.2
+++ openacs-4/packages/proctoring-support/lib/proctored-page.adp	13 Aug 2020 09:31:16 -0000	1.1.2.3
@@ -115,5 +115,6 @@
     var isMobile = @mobile_p;literal@;
     var nextLabel = "#acs-kernel.common_Next#";
     var submitLabel = "#proctoring-support.wizard_finish#";
+    var blackPictureSizeThreshold = 24000; // kbytes
   </script>
   <script src="/resources/proctoring-support/proctored-page.js"></script>
Index: openacs-4/packages/proctoring-support/www/resources/proctored-page.js
===================================================================
RCS file: /usr/local/cvsroot/openacs-4/packages/proctoring-support/www/resources/proctored-page.js,v
diff -u -r1.1.2.2 -r1.1.2.3
--- openacs-4/packages/proctoring-support/www/resources/proctored-page.js	11 Aug 2020 09:05:49 -0000	1.1.2.2
+++ openacs-4/packages/proctoring-support/www/resources/proctored-page.js	13 Aug 2020 09:31:16 -0000	1.1.2.3
@@ -76,7 +76,9 @@
 
 var uploadQueue = [];
 function scheduleUpload(name, type, blob) {
-    if (type == "image" && blob == null && blob.size <= 8000) {
+    if (type == "image" &&
+        blob == null &&
+        blob.size <= blackPictureSizeThreshold) {
         if (name == "camera") {
             modalAlert(blackPictureCameraMessage);
         } else {
@@ -235,7 +237,8 @@
                 canvas.height = camvideo.videoHeight;
                 canvas.getContext("2d").drawImage(camvideo, 0, 0, camvideo.videoWidth, camvideo.videoHeight);
                 canvas.toBlob(function(blob) {
-                    if (blob == null || blob.size < 24000) {
+                    if (blob == null ||
+                        blob.size <= blackPictureSizeThreshold) {
                         var errmsg = blackPictureCameraMessage;
                         setError(errmsg);
                     }