diff --git a/browser_patches/chromium/BUILD_NUMBER b/browser_patches/chromium/BUILD_NUMBER
index fc076b6c45..5c111e426a 100644
--- a/browser_patches/chromium/BUILD_NUMBER
+++ b/browser_patches/chromium/BUILD_NUMBER
@@ -1 +1 @@
-799610
+792639
diff --git a/browser_patches/chromium/build.sh b/browser_patches/chromium/build.sh
index 521e2d8ab5..3285a65108 100755
--- a/browser_patches/chromium/build.sh
+++ b/browser_patches/chromium/build.sh
@@ -5,40 +5,57 @@ set +x
 trap "cd $(pwd -P)" EXIT
 cd "$(dirname $0)"
 
+rm -rf output
 mkdir -p output
 cd output
 
 BUILD_NUMBER=$(head -1 ../BUILD_NUMBER)
-FOLDER_NAME=""
-ZIP_NAME=""
-FILES_TO_REMOVE=()
+
+CHROMIUM_URL=""
+CHROMIUM_FOLDER_NAME=""
+CHROMIUM_FILES_TO_REMOVE=()
+
+FFMPEG_VERSION="4.3.1"
+FFMPEG_URL=""
+FFMPEG_BIN_PATH=""
 
 if [[ $1 == "--win32" ]]; then
-  FOLDER_NAME="Win"
-  ZIP_NAME="chrome-win.zip"
-  FILES_TO_REMOVE+=("chrome-win/interactive_ui_tests.exe")
+  CHROMIUM_URL="https://storage.googleapis.com/chromium-browser-snapshots/Win/${BUILD_NUMBER}/chrome-win.zip"
+  CHROMIUM_FOLDER_NAME="chrome-win"
+  CHROMIUM_FILES_TO_REMOVE+=("chrome-win/interactive_ui_tests.exe")
+  FFMPEG_URL="https://playwright2.blob.core.windows.net/builds/ffmpeg/${FFMPEG_VERSION}/ffmpeg-win32.zip"
+  FFMPEG_BIN_PATH="ffmpeg.exe"
 elif [[ $1 == "--win64" ]]; then
-  FOLDER_NAME="Win_x64"
-  ZIP_NAME="chrome-win.zip"
-  FILES_TO_REMOVE+=("chrome-win/interactive_ui_tests.exe")
+  CHROMIUM_URL="https://storage.googleapis.com/chromium-browser-snapshots/Win_x64/${BUILD_NUMBER}/chrome-win.zip"
+  CHROMIUM_FOLDER_NAME="chrome-win"
+  CHROMIUM_FILES_TO_REMOVE+=("chrome-win/interactive_ui_tests.exe")
+  FFMPEG_URL="https://playwright2.blob.core.windows.net/builds/ffmpeg/${FFMPEG_VERSION}/ffmpeg-win64.zip"
+  FFMPEG_BIN_PATH="ffmpeg.exe"
 elif [[ $1 == "--mac" ]]; then
-  FOLDER_NAME="Mac"
-  ZIP_NAME="chrome-mac.zip"
+  CHROMIUM_URL="https://storage.googleapis.com/chromium-browser-snapshots/Mac/${BUILD_NUMBER}/chrome-mac.zip"
+  CHROMIUM_FOLDER_NAME="chrome-mac"
+  FFMPEG_URL="https://playwright2.blob.core.windows.net/builds/ffmpeg/${FFMPEG_VERSION}/ffmpeg-mac.zip"
+  FFMPEG_BIN_PATH="ffmpeg"
 elif [[ $1 == "--linux" ]]; then
-  FOLDER_NAME="Linux_x64"
-  ZIP_NAME="chrome-linux.zip"
+  CHROMIUM_URL="https://storage.googleapis.com/chromium-browser-snapshots/Linux_x64/${BUILD_NUMBER}/chrome-linux.zip"
+  CHROMIUM_FOLDER_NAME="chrome-linux"
+  # Even though we could bundle ffmpeg on Linux (2.5MB zipped), we
+  # prefer rely on system-installed ffmpeg instead.
 else
   echo "ERROR: unknown platform to build: $1"
   exit 1
 fi
 
-URL="https://storage.googleapis.com/chromium-browser-snapshots/${FOLDER_NAME}/${BUILD_NUMBER}/${ZIP_NAME}"
-curl --output upstream.zip "${URL}"
-
-unzip upstream.zip
-
-for file in ${FILES_TO_REMOVE[@]}; do
+curl --output chromium-upstream.zip "${CHROMIUM_URL}"
+unzip chromium-upstream.zip
+for file in ${CHROMIUM_FILES_TO_REMOVE[@]}; do
   rm -f "${file}"
 done
 
-zip --symlinks -r build.zip ${ZIP_NAME%.zip}
+if [[ -n "${FFMPEG_URL}" ]]; then
+  curl --output ffmpeg-upstream.zip "${FFMPEG_URL}"
+  unzip ffmpeg-upstream.zip
+  cp "$FFMPEG_BIN_PATH" "${CHROMIUM_FOLDER_NAME}"
+fi
+
+zip --symlinks -r build.zip "${CHROMIUM_FOLDER_NAME}"