diff --git a/HMS MediaEngine.app/Contents/MacOS/HMS-Launcher b/HMS MediaEngine.app/Contents/MacOS/HMS-Launcher
index f393f05..43aea18 100755
--- a/HMS MediaEngine.app/Contents/MacOS/HMS-Launcher	
+++ b/HMS MediaEngine.app/Contents/MacOS/HMS-Launcher	
@@ -10,6 +10,10 @@ if [ -z "$PY" ]; then
   exit 1
 fi
 cd "$DIR"
+# Portable GStreamer-Umgebung laden (falls HMS-Portable-Install genutzt)
+if [ -f "$DIR/runtime/env.sh" ]; then
+  source "$DIR/runtime/env.sh"
+fi
 if "$PY" -c "import gi; gi.require_version('Gst','1.0')" >/dev/null 2>&1; then
   nohup "$PY" "$DIR/run.py" >>/tmp/hms-mediaengine.log 2>&1 &
   PORT=8080
diff --git a/HMS-Portable-Install.command b/HMS-Portable-Install.command
new file mode 100755
index 0000000..52072ae
--- /dev/null
+++ b/HMS-Portable-Install.command
@@ -0,0 +1,165 @@
+#!/bin/bash
+# HMS MediaEngine – PORTABLE Installation (macOS)
+#
+# Loesung fuer: "16 GB freier Speicher noetig"
+# Grund: macOS Installer.app verlangt als Systemreserve 10-16 GB
+# freien Speicher – NICHT weil GStreamer so gross ist (nur 146 MB!).
+#
+# Dieser Installer UMGEHT Installer.app komplett:
+# 1. Laedt GStreamer .pkg herunter (146 MB)
+# 2. Entpackt es mit 'pkgutil' OHNE Installation (keine 16GB-Pruefung)
+# 3. Kopiert das Framework in den Projektordner (ca. 500 MB)
+# 4. Loescht Download + Temp-Dateien
+# 5. Ergebnis: Portable App, ~600 MB im Ordner, NICHTS Systemweit
+#
+# Benoetigt: ca. 800 MB FREIEN Speicher WAEHREND der Installation
+# Danach bleiben: ca. 500-600 MB im Projektordner
+
+cd "$(dirname "$0")"
+
+echo "=================================================="
+echo " HMS MediaEngine – PORTABLE Installation"
+ echo " (umgeht macOS Installer.app komplett)"
+echo "=================================================="
+echo ""
+echo ">> Pruefe System..."
+
+# --- Python pruefen (macOS bringt python3 mit) ---
+PY="$(command -v python3)"
+if [ -z "$PY" ]; then
+  osascript -e 'display alert "Python fehlt" message "macOS sollte python3 mitbringen. Falls nicht: Xcode Command Line Tools installieren (xcode-select --install) und erneut versuchen." as critical' >/dev/null 2>&1
+  exit 1
+fi
+echo "   Python: $PY"
+
+# --- Freien Speicher pruefen (nur ~800 MB noetig) ---
+FREE_MB=$(df -m . | awk 'NR==2 {print $4}')
+echo "   Freier Speicher: ${FREE_MB} MB"
+if [ "$FREE_MB" -lt 800 ]; then
+  osascript -e 'display alert "Zu wenig Speicher" message "Es werden nur ca. 800 MB fuer die Installation gebraucht (danach 500-600 MB). Aktuell frei: '"$FREE_MB"' MB." as critical' >/dev/null 2>&1
+  exit 1
+fi
+
+# --- .pkg herunterladen ---
+PKG_URL="https://gstreamer.freedesktop.org/data/pkg/macos/1.28.4/gstreamer-1.0-1.28.4-universal.pkg"
+PKG_FILE="/tmp/gstreamer-1.28.4.pkg"
+
+if [ ! -f "runtime/GStreamer.framework/Versions/1.0/lib/gstreamer-1.0" ]; then
+  echo ""
+  echo ">> Lade GStreamer herunter (146 MB)..."
+  curl -L -o "$PKG_FILE" "$PKG_URL"
+  if [ $? -ne 0 ] || [ ! -s "$PKG_FILE" ]; then
+    echo "   FEHLER: Download fehlgeschlagen"
+    osascript -e 'display alert "Download fehlgeschlagen" message "GStreamer konnte nicht geladen werden. Internetverbindung pruefen und erneut versuchen." as critical' >/dev/null 2>&1
+    rm -f "$PKG_FILE"
+    exit 1
+  fi
+  echo "   Download abgeschlossen: $(du -h "$PKG_FILE" | cut -f1)"
+
+  # --- pkgutil: entpacken OHNE Installer.app ---
+  echo ""
+  echo ">> Entpacke GStreamer (ohne Installation, ohne 16GB-Pruefung)..."
+  EXTRACT_DIR="/tmp/hms_gst_extract"
+  rm -rf "$EXTRACT_DIR"
+  pkgutil --expand-full "$PKG_FILE" "$EXTRACT_DIR"
+  if [ $? -ne 0 ]; then
+    echo "   FEHLER: pkgutil konnte nicht entpacken"
+    osascript -e 'display alert "Entpacken fehlgeschlagen" message "pkgutil meldete einen Fehler. Bitte Meldung an den Support schicken." as critical' >/dev/null 2>&1
+    rm -rf "$EXTRACT_DIR" "$PKG_FILE"
+    exit 1
+  fi
+  echo "   Entpackt nach: $EXTRACT_DIR"
+
+  # --- Framework ins Projektverzeichnis kopieren ---
+  echo ""
+  echo ">> Kopiere GStreamer in den Projektordner (runtime/)..."
+  mkdir -p "runtime"
+  FRAMEWORK_SRC=""
+  # pkgutil legt es irgendwo unter payload ab - suchen
+  for f in $(find "$EXTRACT_DIR" -name "GStreamer.framework" -maxdepth 5 -type d 2>/dev/null); do
+    FRAMEWORK_SRC="$f"
+    break
+  done
+  if [ -z "$FRAMEWORK_SRC" ]; then
+    # Fallback: ganze Payload kopieren (enthaelt das Framework)
+    echo "   Suche Framework in Payload..."
+    PAYLOAD_DIR=$(find "$EXTRACT_DIR" -name "Payload" -maxdepth 3 -type d 2>/dev/null | head -1)
+    if [ -n "$PAYLOAD_DIR" ]; then
+      FRAMEWORK_SRC=$(find "$PAYLOAD_DIR" -name "GStreamer.framework" -maxdepth 3 -type d 2>/dev/null | head -1)
+    fi
+  fi
+  if [ -z "$FRAMEWORK_SRC" ]; then
+    echo "   FEHLER: GStreamer.framework nicht im .pkg gefunden"
+    osascript -e 'display alert "Framework nicht gefunden" message "GStreamer.framework wurde im entpackten Paket nicht gefunden. Bitte Meldung an den Support." as critical' >/dev/null 2>&1
+    rm -rf "$EXTRACT_DIR" "$PKG_FILE"
+    exit 1
+  fi
+  echo "   Quelle: $FRAMEWORK_SRC"
+  cp -R "$FRAMEWORK_SRC" "runtime/"
+  if [ $? -ne 0 ]; then
+    echo "   FEHLER: Kopieren fehlgeschlagen"
+    osascript -e 'display alert "Kopieren fehlgeschlagen" message "GStreamer konnte nicht in den Projektordner kopiert werden." as critical' >/dev/null 2>&1
+    rm -rf "$EXTRACT_DIR" "$PKG_FILE"
+    exit 1
+  fi
+
+  # --- Aufraeumen (gibt ~750 MB zurueck) ---
+  echo ""
+  echo ">> Raeume auf (loesche Download + Temp)..."
+  rm -rf "$EXTRACT_DIR" "$PKG_FILE"
+  echo "   Aufgeraeumt."
+else
+  echo "   GStreamer bereits vorhanden (runtime/)"
+fi
+
+# --- Verifizieren ---
+echo ""
+echo ">> Verifiziere portable Installation..."
+FW_PATH="$(pwd)/runtime/GStreamer.framework/Versions/1.0"
+if [ ! -d "$FW_PATH/lib/gstreamer-1.0" ]; then
+  echo "   FEHLER: GStreamer-Bibliotheken nicht gefunden"
+  osascript -e 'display alert "Installation unvollstaendig" message "GStreamer-Bibliotheken fehlen. Bitte erneut installieren." as critical' >/dev/null 2>&1
+  exit 1
+fi
+PLUGIN_COUNT=$(ls "$FW_PATH/lib/gstreamer-1.0/" 2>/dev/null | wc -l | tr -d ' ')
+echo "   GStreamer-Plugins gefunden: $PLUGIN_COUNT"
+echo "   Framework-Pfad: $FW_PATH"
+
+# --- Environment-Datei fuer run.py schreiben ---
+cat > "runtime/env.sh" << 'ENVEOF'
+# HMS MediaEngine portable environment (wird von run.py geladen)
+FW_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)/GStreamer.framework/Versions/1.0"
+export DYLD_LIBRARY_PATH="$FW_DIR/lib:$DYLD_LIBRARY_PATH"
+export DYLD_FRAMEWORK_PATH="$(dirname "$FW_DIR")/../..:$DYLD_FRAMEWORK_PATH"
+export GST_PLUGIN_PATH="$FW_DIR/lib/gstreamer-1.0"
+export GST_PLUGIN_SYSTEM_PATH_1_0="$FW_DIR/lib/gstreamer-1.0"
+export GI_TYPELIB_PATH="$FW_DIR/lib/girepository-1.0:$GI_TYPELIB_PATH"
+export PKG_CONFIG_PATH="$FW_DIR/lib/pkgconfig:$PKG_CONFIG_PATH"
+# PyGObject-Bindings im Framework (falls vorhanden):
+for _pydir in "$FW_DIR/lib/python3.12/site-packages" \
+              "$FW_DIR/lib/python3.13/site-packages" \
+              "$FW_DIR/lib/python3.11/site-packages"; do
+  if [ -d "$_pydir/gi" ]; then
+    export PYTHONPATH="$_pydir:$PYTHONPATH"
+    break
+  fi
+done
+ENVEOF
+chmod +x "runtime/env.sh"
+echo "   Environment-Datei: runtime/env.sh"
+
+# --- Größen-Bericht ---
+echo ""
+RUNTIME_MB=$(du -sm runtime/ | cut -f1)
+echo ">> Fertig! Portable GStreamer-Installation belegt: ${RUNTIME_MB} MB"
+echo "   (Nichts wurde systemweit installiert)"
+
+echo ""
+echo ">> Oeffne grafischen Installer zum Verifizieren und Starten..."
+"$PY" installer_gui.py
+
+echo ""
+echo "=================================================="
+echo " FERTIG! Ab jetzt: HMS MediaEngine.app doppelklicken"
+echo " (nutzt automatisch die portable GStreamer-Installation)"
+echo "=================================================="
diff --git a/launcher_core.py b/launcher_core.py
index 57be452..ce914c6 100644
--- a/launcher_core.py
+++ b/launcher_core.py
@@ -19,6 +19,23 @@ from pathlib import Path
 ROOT = Path(__file__).resolve().parent
 IS_WIN = sys.platform == "win32"
 
+# Portable GStreamer laden (macOS: HMS-Portable-Install.command)
+_fw = ROOT / "runtime" / "GStreamer.framework" / "Versions" / "1.0"
+if _fw.is_dir():
+    import os as _os
+    _lib = str(_fw / "lib")
+    _os.environ["DYLD_LIBRARY_PATH"] = _lib + ":" + _os.environ.get("DYLD_LIBRARY_PATH", "")
+    _gst = str(_fw / "lib" / "gstreamer-1.0")
+    _os.environ["GST_PLUGIN_PATH"] = _gst
+    _os.environ["GST_PLUGIN_SYSTEM_PATH_1_0"] = _gst
+    _os.environ["GI_TYPELIB_PATH"] = (str(_fw / "lib" / "girepository-1.0")
+                                     + ":" + _os.environ.get("GI_TYPELIB_PATH", ""))
+    for _v in ("python3.12", "python3.13", "python3.11"):
+        _sp = _fw / "lib" / _v / "site-packages"
+        if (_sp / "gi").is_dir():
+            sys.path.insert(0, str(_sp))
+            break
+
 
 def web_port() -> int:
     try:
diff --git a/make_mac_app.py b/make_mac_app.py
index 08e10e7..f6d1888 100644
--- a/make_mac_app.py
+++ b/make_mac_app.py
@@ -45,6 +45,10 @@ if [ -z "$PY" ]; then
   exit 1
 fi
 cd "$DIR"
+# Portable GStreamer-Umgebung laden (falls HMS-Portable-Install genutzt)
+if [ -f "$DIR/runtime/env.sh" ]; then
+  source "$DIR/runtime/env.sh"
+fi
 if "$PY" -c "import gi; gi.require_version('Gst','1.0')" >/dev/null 2>&1; then
   nohup "$PY" "$DIR/run.py" >>/tmp/hms-mediaengine.log 2>&1 &
   PORT=8080
diff --git a/run.py b/run.py
index 7931bb3..d6c07cf 100644
--- a/run.py
+++ b/run.py
@@ -24,6 +24,26 @@ from pathlib import Path
 ROOT = Path(__file__).resolve().parent
 sys.path.insert(0, str(ROOT))
 
+# Portable GStreamer-Installation (HMS-Portable-Install.command)
+# laedt die Umgebungsvariablen, BEVOR gi importiert wird.
+_RUNTIME = ROOT / "runtime"
+_FW = _RUNTIME / "GStreamer.framework" / "Versions" / "1.0"
+if _FW.is_dir():
+    import os as _os
+    _lib = str(_FW / "lib")
+    _os.environ["DYLD_LIBRARY_PATH"] = _lib + ":" + _os.environ.get("DYLD_LIBRARY_PATH", "")
+    _gst = str(_FW / "lib" / "gstreamer-1.0")
+    _os.environ["GST_PLUGIN_PATH"] = _gst
+    _os.environ["GST_PLUGIN_SYSTEM_PATH_1_0"] = _gst
+    _gi_types = str(_FW / "lib" / "girepository-1.0")
+    _os.environ["GI_TYPELIB_PATH"] = _gi_types + ":" + _os.environ.get("GI_TYPELIB_PATH", "")
+    for _v in ("python3.12", "python3.13", "python3.11"):
+        _sp = _FW / "lib" / _v / "site-packages"
+        if (_sp / "gi").is_dir():
+            sys.path.insert(0, str(_sp))
+            break
+    print(f"[Start] Portable GStreamer aktiv: {_FW}")
+
 import gi  # noqa: E402
 gi.require_version("Gst", "1.0")
 from gi.repository import Gst  # noqa: E402