diff --git a/media/base/video_adapter.cc b/media/base/video_adapter.cc
index 1d0beb5959..487845d2dc 100644
--- a/media/base/video_adapter.cc
+++ b/media/base/video_adapter.cc
@@ -379,6 +379,11 @@ void VideoAdapter::OnSinkWants(const rtc::VideoSinkWants& sink_wants) {
   }
 
   auto res = *sink_wants.requested_resolution;
+  if (res.width < res.height) {
+    // Adjust `res` to landscape mode.
+    res.width = sink_wants.requested_resolution->height;
+    res.height = sink_wants.requested_resolution->width;
+  }
   auto pixel_count = res.width * res.height;
   output_format_request_.target_landscape_aspect_ratio =
       std::make_pair(res.width, res.height);
diff --git a/media/base/video_adapter_unittest.cc b/media/base/video_adapter_unittest.cc
index aab96dcf82..5011438363 100644
--- a/media/base/video_adapter_unittest.cc
+++ b/media/base/video_adapter_unittest.cc
@@ -1281,6 +1281,31 @@ TEST_P(VideoAdapterTest, UseRequestedResolutionInsteadOfOnOutputFormatRequest) {
   }
 }
 
+TEST_P(VideoAdapterTest, RequestedResolutionIsOrientationAgnostic) {
+  // Request 1280x720 when frame is 720x1280.
+  {
+    adapter_.OnSinkWants(
+        BuildSinkWants(Resolution{.width = 1280, .height = 720},
+                       /* any_active_without_requested_resolution= */ false));
+
+    EXPECT_THAT(
+        AdaptFrameResolution(/* input frame */ {.width = 720, .height = 1280})
+            .first,
+        Eq(Resolution{.width = 720, .height = 1280}));
+  }
+  // Request 720x1280 when frame is 1280x720.
+  {
+    adapter_.OnSinkWants(
+        BuildSinkWants(Resolution{.width = 720, .height = 1280},
+                       /* any_active_without_requested_resolution= */ false));
+
+    EXPECT_THAT(
+        AdaptFrameResolution(/* input frame */ {.width = 1280, .height = 720})
+            .first,
+        Eq(Resolution{.width = 1280, .height = 720}));
+  }
+}
+
 class VideoAdapterWithSourceAlignmentTest : public VideoAdapterTest {
  protected:
   static constexpr int kSourceResolutionAlignment = 7;