diff --git a/.github/workflows/flutter-build.yml b/.github/workflows/flutter-build.yml
index 83fb3b786..49b5d4b5c 100644
--- a/.github/workflows/flutter-build.yml
+++ b/.github/workflows/flutter-build.yml
@@ -623,7 +623,7 @@ jobs:
 
       - name: Install build runtime
         run: |
-          brew install llvm create-dmg nasm
+          brew install llvm create-dmg
           # pkg-config is handled in a separate step, because it may be already installed by `macos-latest`(14.7.1) runner
           if command -v pkg-config &>/dev/null; then
               echo "pkg-config is already installed"
@@ -631,6 +631,17 @@ jobs:
               brew install pkg-config
           fi
 
+      - name: Install NASM
+        run: |
+          # Install NASM 2.16.x from official release.
+          # Do NOT use `brew install nasm` which installs NASM 3.x.
+          # NASM 3.x is a complete rewrite with incompatible CLI options and removed features.
+          # aom and other multimedia libraries require NASM 2.x for x86/x86_64 assembly.
+          wget https://www.nasm.us/pub/nasm/releasebuilds/2.16.03/macosx/nasm-2.16.03-macosx.zip
+          unzip nasm-2.16.03-macosx.zip
+          sudo cp nasm-2.16.03/nasm /usr/local/bin/nasm
+          nasm --version
+
       - name: Install flutter
         uses: subosito/flutter-action@v2
         with: