1 files changed, 5 insertions, 3 deletions
diff --git a/testing/web-platform/tests/mediacapture-record/MediaRecorder-canvas-media-source.https.html b/testing/web-platform/tests/mediacapture-record/MediaRecorder-canvas-media-source.https.html
index e640714d5c..0680c21879 100644
--- a/testing/web-platform/tests/mediacapture-record/MediaRecorder-canvas-media-source.https.html
+++ b/testing/web-platform/tests/mediacapture-record/MediaRecorder-canvas-media-source.https.html
@@ -9,6 +9,8 @@
   <meta name=variant content="?mimeType=video/webm;codecs=vp9,opus">
   <meta name=variant content="?mimeType=video/webm;codecs=av1,opus">
   <meta name=variant content="?mimeType=video/mp4;codecs=avc1,mp4a.40.2">
+  <meta name=variant content="?mimeType=video/mp4;codecs=vp9,opus">
+  <meta name=variant content="?mimeType=video/mp4">
   <link rel="help"
         href="https://w3c.github.io/mediacapture-record/MediaRecorder.html#dom-mediarecorder-mimeType">
   <script src="/resources/testharness.js"></script>
@@ -84,9 +86,9 @@ async_test(test => {
 
   const params = new URLSearchParams(window.location.search);
   const mimeType = params.get('mimeType');
-  if (mimeType) {
-    assert_implements_optional(MediaRecorder.isTypeSupported(mimeType),
-      `"${mimeType}" for MediaRecorder is not supported`);
+  if (mimeType && !MediaRecorder.isTypeSupported(mimeType)) {
+    test.done();
+    return;
   }
 
   const canvas = document.querySelector("canvas");