diff --git a/.gitignore b/.gitignore
index fd2b9a4..2b375f9 100644
--- a/.gitignore
+++ b/.gitignore
@@ -11,3 +11,8 @@ captures/
 *.dex
 third-party/*
 app/.*
+bin
+lib
+include
+.log_capture
+debug-capture
diff --git a/app/src/main/java/com/foxx/androidcast/SettingsUi.java b/app/src/main/java/com/foxx/androidcast/SettingsUi.java
index cc8232a..99ce0d3 100644
--- a/app/src/main/java/com/foxx/androidcast/SettingsUi.java
+++ b/app/src/main/java/com/foxx/androidcast/SettingsUi.java
@@ -34,6 +34,7 @@ public final class SettingsUi {
     }
 
     /** @deprecated use {@link #bindSender} or {@link #bindReceiver} */
+    @Deprecated
     public static void bind(AppCompatActivity activity, CastSettings settings) {
         bindSender(activity, settings);
     }
diff --git a/rebuild.sh b/rebuild.sh
index 24ecdb3..9dc784b 100755
--- a/rebuild.sh
+++ b/rebuild.sh
@@ -107,18 +107,25 @@ reconnect_known_devices() {
   adb devices -l
 }
 
-echo "==> Cleaning and building debug APK (JAVA_HOME=$JAVA_HOME)"
-./gradlew clean assembleDebug
+# shellcheck source=android_find_latest_ndk.sh
+source "$ROOT/android_find_latest_ndk.sh"
+export ANDROID_NDK_HOME="$(android_find_ndk_root "$ROOT")"
+export ANDROID_NDK_ROOT="$ANDROID_NDK_HOME"
+echo "==> Using NDK: $ANDROID_NDK_HOME"
 
-export ANDROID_NDK_HOME="/home/foxx/Android/Sdk/ndk/29.0.14206865/"
-ARCH_ABIS="armeabi-v7a arm64-v8a x86"
-rm -drf ./build/native/* ||:
+# Match app/build.gradle defaultConfig.ndk.abiFilters
+ARCH_ABIS="armeabi-v7a arm64-v8a x86_64"
+echo "==> Building libvpx for: ${ARCH_ABIS}"
+rm -rf "$ROOT/build/native"
+mkdir -p "$ROOT/build/native"
 for ARCH_ABI in ${ARCH_ABIS}; do
   unset ANDROIDCAST_LIBVPX_LIB
-  ./scripts/build-native-codecs.sh "${ARCH_ABI}" || exit $?
-  ./gradlew assembleDebug || exit $?
+  LC_ALL=C ./scripts/build-native-codecs.sh "${ARCH_ABI}"
 done
 
+echo "==> Building debug APK (JAVA_HOME=$JAVA_HOME)"
+./gradlew clean assembleDebug
+
 if [[ "$RUN_UNIT_TESTS" == "1" ]]; then
   echo "==> Running unit tests (./gradlew testDebugUnitTest)"
   ./gradlew testDebugUnitTest
diff --git a/scripts/build-native-codecs.sh b/scripts/build-native-codecs.sh
index b9ad053..b0ce424 100755
--- a/scripts/build-native-codecs.sh
+++ b/scripts/build-native-codecs.sh
@@ -27,23 +27,14 @@ if [[ ! -d "$VPX_SRC_REAL" ]]; then
   exit 1
 fi
 
-NDK=""
-if [[ -f "$ROOT/local.properties" ]]; then
-  NDK="$(sed -n 's/^ndk\.dir=//p' "$ROOT/local.properties" | tr -d '\r' | head -1)"
-fi
-if [[ -z "$NDK" && -n "${ANDROID_NDK_HOME:-}" ]]; then
-  NDK="$ANDROID_NDK_HOME"
-fi
-if [[ -z "$NDK" && -n "${ANDROID_NDK_ROOT:-}" ]]; then
-  NDK="$ANDROID_NDK_ROOT"
-fi
-NDK="${NDK%/}"
-if [[ -z "$NDK" || ! -d "$NDK" ]]; then
-  echo "ERROR: Set ndk.dir in local.properties or ANDROID_NDK_HOME"
+# shellcheck source=android_find_latest_ndk.sh
+source "$ROOT/android_find_latest_ndk.sh"
+if ! NDK="$(android_find_ndk_root "$ROOT")"; then
   exit 1
 fi
-if [[ ! -x "$NDK/ndk-build" ]]; then
-  echo "ERROR: ndk-build not found under $NDK"
+NDK_HOST_BIN="$(android_ndk_host_prebuilt_bin "$NDK")"
+if [[ ! -d "$NDK_HOST_BIN" ]]; then
+  echo "ERROR: NDK host toolchain bin not found under $NDK"
   exit 1
 fi
 
@@ -79,8 +70,23 @@ if path_has_space "$ROOT" || path_has_space "$VPX_SRC_REAL"; then
 fi
 
 mkdir -p "$BUILD_DIR" "$OUT" "$PROJECT_OUT"
+export ANDROID_NDK_HOME="$NDK"
 export ANDROID_NDK_ROOT="$NDK"
-export PATH="$NDK/toolchains/llvm/prebuilt/linux-x86_64/bin:$PATH"
+export PATH="$NDK_HOST_BIN:$PATH"
+
+VPX_CONFIGURE_EXTRA=()
+APP_CFLAGS_EXTRA=""
+case "$ABI" in
+  x86)
+    # NDK does not infer -msse4.1/-mavx from libvpx source names; AVX-512 is unused on Android x86.
+    VPX_CONFIGURE_EXTRA+=(--disable-avx512)
+    APP_CFLAGS_EXTRA="-msse4.1 -mavx"
+    ;;
+  x86_64)
+    VPX_CONFIGURE_EXTRA+=(--disable-avx512)
+    APP_CFLAGS_EXTRA="-msse4.1 -mavx -mavx2"
+    ;;
+esac
 
 echo "Building libvpx for $ABI (target=$VPX_TARGET) ..."
 echo "  source: $VPX_SRC"
@@ -110,6 +116,12 @@ elif [[ ! -f "$LIBS_MK" ]] || ! grep -q "^TOOLCHAIN := ${VPX_TARGET}\$" "$BUILD_
   make distclean >/dev/null 2>&1 || rm -f Makefile config.mk "$LIBS_MK" vpx_config.h vpx_config.c vpx_config.asm \
     vpx_version.h vp8_rtcd.h vp9_rtcd.h vpx_scale_rtcd.h vpx_dsp_rtcd.h
   need_configure=true
+elif [[ "$ABI" == x86 || "$ABI" == x86_64 ]] && [[ -f "$BUILD_DIR/vpx_config.h" ]] \
+    && grep -q '#define HAVE_AVX512 1' "$BUILD_DIR/vpx_config.h"; then
+  echo "Re-configuring (AVX-512 disabled for Android NDK on $ABI)..."
+  make distclean >/dev/null 2>&1 || rm -f Makefile config.mk "$LIBS_MK" vpx_config.h vpx_config.c vpx_config.asm \
+    vpx_version.h vp8_rtcd.h vp9_rtcd.h vpx_scale_rtcd.h vpx_dsp_rtcd.h
+  need_configure=true
 fi
 
 if $need_configure; then
@@ -135,7 +147,8 @@ if $need_configure; then
     --enable-spatial-resampling \
     --disable-debug-libs \
     --disable-docs \
-    --enable-external-build
+    --enable-external-build \
+    "${VPX_CONFIGURE_EXTRA[@]}"
 fi
 
 # armeabi-v7a ndk-build runs make in ndk-app/ and needs vpx_config.asm (not required for arm64).
@@ -175,11 +188,14 @@ if [[ -f "$LIBS_MK_NDK" ]]; then
   ln -sfn "$LIBS_MK_NDK" "$JNI_DIR/libs-${VPX_TARGET}.mk"
 fi
 
-cat > "$JNI_DIR/Application.mk" <<EOF
-APP_ABI := $ABI
-APP_PLATFORM := android-29
-APP_STL := c++_static
-EOF
+{
+  echo "APP_ABI := $ABI"
+  echo "APP_PLATFORM := android-29"
+  echo "APP_STL := c++_static"
+  if [[ -n "$APP_CFLAGS_EXTRA" ]]; then
+    echo "APP_CFLAGS += $APP_CFLAGS_EXTRA"
+  fi
+} > "$JNI_DIR/Application.mk"
 
 cat > "$JNI_DIR/Android.mk" <<'EOF'
 LOCAL_PATH := $(call my-dir)