Cache Build SVT-AV1 step
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index ca96fe4..31936d5 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -41,6 +41,7 @@
       working-directory: ./ext
       run: bash rav1e.cmd
     - name: Build SVT-AV1
+      if: steps.cache-ext.outputs.cache-hit != 'true'
       working-directory: ./ext
       run: bash svt.cmd
     - name: Build libgav1