diff --git a/tools/ffmpeg/gen-patches.sh b/tools/ffmpeg/gen-patches.sh
new file mode 100755
index 0000000000..48ace62349
--- /dev/null
+++ b/tools/ffmpeg/gen-patches.sh
@@ -0,0 +1,98 @@
+#!/bin/bash
+
+# base ffmpeg version
+KODI_FFMPEG_REPO="https://github.com/xbmc/FFmpeg"
+KODI_FFMPEG_VERSION="4.3-Matrix-Alpha1"
+
+ALL_FEATURE_SETS="v4l2-drmprime v4l2-request libreelec rpi"
+
+if [ $# -eq 0 ]; then
+  echo "usage: $0 all|featureset [githash]"
+  echo "available feature sets: ${ALL_FEATURE_SETS}"
+  exit 1
+fi
+
+FFMPEG_ROOT="$(pwd)"
+LE_ROOT="$(cd $(dirname $0)/../.. ; pwd)"
+
+# get kodi's ffmpeg version
+git fetch "${KODI_FFMPEG_REPO}" "${KODI_FFMPEG_VERSION}"
+KODI_REV=$(git rev-parse FETCH_HEAD)
+
+create_patch() {
+  FEATURE_SET="$1"
+  REFTYPE="branch"
+  case "${FEATURE_SET}" in
+    v4l2-drmprime)
+      REPO="https://github.com/lrusak/FFmpeg"
+      REFSPEC="v4l2-drmprime-v5"
+      ;;
+    v4l2-request)
+      REPO="https://github.com/Kwiboo/FFmpeg"
+      REFSPEC="v4l2-request-hwaccel-4.3"
+      ;;
+    libreelec)
+      REPO="https://github.com/LibreELEC/FFmpeg"
+      REFSPEC="4.3-libreelec-misc"
+      ;;
+    rpi)
+      REPO="https://github.com/jc-kynesim/rpi-ffmpeg"
+      REFSPEC="test/4.3/kodi_main"
+      ;;
+    *)
+      echo "illegal feature set ${FEATURE_SET}"
+      exit 1
+      ;;
+  esac
+
+  PATCH_DIR="packages/multimedia/ffmpeg/patches/${FEATURE_SET}"
+  PATCH_FILE="${PATCH_DIR}/ffmpeg-001-${FEATURE_SET}.patch"
+  mkdir -p "${LE_ROOT}/${PATCH_DIR}"
+
+  git fetch "${REPO}" "${REFSPEC}"
+  if [ $# -ge 2 ]; then
+    REV="$2"
+  else
+    REV=$(git rev-parse FETCH_HEAD)
+  fi
+  BASE_REV=$(git merge-base "${KODI_REV}" "${REV}")
+
+  if [ -f "${LE_ROOT}/${PATCH_FILE}" ]; then
+    ACTION="update"
+  else
+    ACTION="create"
+  fi
+
+  if [ "${FEATURE_SET}" = "rpi" ]; then
+    # branch has non-linear history, format-patch doesn't work
+    git diff "${BASE_REV}..${REV}" > "${LE_ROOT}/${PATCH_FILE}"
+  else
+    git format-patch --stdout --no-signature "${BASE_REV}..${REV}" > "${LE_ROOT}/${PATCH_FILE}"
+  fi
+
+  MSG=$(mktemp)
+
+  cat << EOF > "${MSG}"
+ffmpeg: ${ACTION} ${FEATURE_SET} patch
+
+Patch created using revisions ${BASE_REV:0:7}..${REV:0:7}
+from ${REFTYPE} ${REFSPEC} of ${REPO}
+EOF
+
+  cd "${LE_ROOT}"
+  git add "${PATCH_FILE}"
+  git commit -F "${MSG}" ${GIT_COMMIT_ARGS}
+  cd "${FFMPEG_ROOT}"
+  rm "${MSG}"
+}
+
+if [ "$1" = "all" ]; then
+  for SET in ${ALL_FEATURE_SETS}; do
+    create_patch "${SET}"
+  done
+else
+  create_patch "$@"
+fi
+
+
+