diff --git a/dom/media/MediaDecoder.cpp b/dom/media/MediaDecoder.cpp
index 9cc5310f550e..dfc2b5a4ab70 100644
--- a/dom/media/MediaDecoder.cpp
+++ b/dom/media/MediaDecoder.cpp
@@ -966,14 +966,6 @@ void MediaDecoder::UpdateVideoDecodeMode() {
     return;
   }
 
-  // If an element is in-tree with UNTRACKED visibility, the visibility is
-  // incomplete and don't update the video decode mode.
-  if (mIsElementInTree && mElementVisibility == Visibility::UNTRACKED) {
-    LOG("UpdateVideoDecodeMode(), early return because we have incomplete "
-        "visibility states.");
-    return;
-  }
-
   // Seeking is required when leaving suspend mode.
   if (!mMediaSeekable) {
     LOG("UpdateVideoDecodeMode(), set Normal because the media is not "
@@ -1014,6 +1006,16 @@ void MediaDecoder::UpdateVideoDecodeMode() {
     return;
   }
 
+  // If the element is in-tree with UNTRACKED visibility, that means the element
+  // is not close enough to the viewport so we have not start to update its
+  // visibility. In this case, it's equals to invisible.
+  if (mIsElementInTree && mElementVisibility == Visibility::UNTRACKED) {
+    LOG("UpdateVideoDecodeMode(), set Suspend because element hasn't be "
+        "updated visibility state.");
+    mDecoderStateMachine->SetVideoDecodeMode(VideoDecodeMode::Suspend);
+    return;
+  }
+
   // Otherwise, depends on the owner's visibility state.
   // A element is visible only if its document is visible and the element
   // itself is visible.