diff --git a/media/base/video_adapter.cc b/media/base/video_adapter.cc
index 149071d153..01aaad13d3 100644
--- a/media/base/video_adapter.cc
+++ b/media/base/video_adapter.cc
@@ -12,6 +12,7 @@
 
 #include <algorithm>
 #include <cmath>
+#include <cstdint>
 #include <cstdlib>
 #include <limits>
 #include <utility>
@@ -39,7 +40,8 @@ struct Fraction {
   // Determines number of output pixels if both width and height of an input of
   // `input_pixels` pixels is scaled with the fraction numerator / denominator.
   int scale_pixel_count(int input_pixels) {
-    return (numerator * numerator * input_pixels) / (denominator * denominator);
+    return (numerator * numerator * static_cast<int64_t>(input_pixels))
+                                  / (denominator * denominator);
   }
 };
 
diff --git a/media/base/video_adapter_unittest.cc b/media/base/video_adapter_unittest.cc
index 3a8d2e6098..778e61e74c 100644
--- a/media/base/video_adapter_unittest.cc
+++ b/media/base/video_adapter_unittest.cc
@@ -839,6 +839,16 @@ TEST_P(VideoAdapterTest, RequestAspectRatio) {
   EXPECT_EQ(360, cropped_height_);
   EXPECT_EQ(640, out_width_);
   EXPECT_EQ(360, out_height_);
+
+  adapter_.OnOutputFormatRequest(std::make_pair(1280, 720), 1280 * 720 - 1,
+                                 absl::nullopt);
+  EXPECT_TRUE(adapter_.AdaptFrameResolution(2592, 1944, 0, &cropped_width_,
+                                            &cropped_height_, &out_width_,
+                                            &out_height_));
+  EXPECT_EQ(2592, cropped_width_);
+  EXPECT_EQ(1458, cropped_height_);
+  EXPECT_EQ(1152, out_width_);
+  EXPECT_EQ(648, out_height_);
 }
 
 TEST_P(VideoAdapterTest, RequestAspectRatioWithDifferentOrientation) {