diff --git a/fileflows/scripts/03_Encode_AV1_QSV.js b/fileflows/scripts/03_Encode_AV1_QSV.js
index a4da543..cdf8fa7 100644
--- a/fileflows/scripts/03_Encode_AV1_QSV.js
+++ b/fileflows/scripts/03_Encode_AV1_QSV.js
@@ -1,13 +1,33 @@
-function Script(CQ, Preset, SizePercent, BufsizeMultiplier, AQStrength, RcLookahead)
+/**
+ * @name 03_Encode_AV1_NVENC
+ * @description AV1-Encode via NVIDIA NVENC fuer 4K-Remux Material.
+ *              VBR mit CQ, maxrate = TargetPercent der Quelle, bufsize = MaxratePercent * BufsizeMultiplier.
+ *              CUDA HW-Decode. HDR/DV-aware. Audio: EAC3-Kompatspur bei DTS, sonst copy.
+ *              Subtitles 1:1. GROESSEN-SICHERHEITSNETZ: Output <= Original (Toleranz 5%).
+ * @author Sascha + Trulla
+ * @revision 2
+ * @output Encode erfolgreich
+ * @output Skip / Fehler
+ * @param {int} TargetPercent Ziel-Bitrate als % der Quelle (z.B. 50 = halbe Bitrate)
+ * @param {int} MaxratePercent Peak-Cap als % der Quelle (z.B. 60)
+ * @param {int} BufsizeMultiplier bufsize = Maxrate * BufsizeMultiplier
+ * @param {int} RcLookahead NVENC rc-lookahead Frames
+ * @param {int} CQ Constant Quality (niedriger = besser, Default 24)
+ * @param {string} Preset NVENC Preset p1..p7 (Default p7 = langsamste/beste)
+ * @param {int} AQStrength Adaptive Quantization (Default 15)
+ */
+function Script(TargetPercent, MaxratePercent, BufsizeMultiplier, RcLookahead, CQ, Preset, AQStrength)
 {
-    CQ                = CQ                || 24;
-    Preset            = Preset            || 'p7';
-    SizePercent       = SizePercent       || 60;
-    BufsizeMultiplier = BufsizeMultiplier || 2;
-    AQStrength        = AQStrength        || 15;
-    RcLookahead       = RcLookahead       || 64;
+    TargetPercent       = TargetPercent       || 50;
+    MaxratePercent      = MaxratePercent      || 60;
+    BufsizeMultiplier   = BufsizeMultiplier   || 2;
+    RcLookahead         = RcLookahead         || 40;
+    CQ                  = CQ                  || 24;
+    Preset              = Preset              || 'p7';
+    AQStrength          = AQStrength          || 15;
 
-    let SizeFactor = SizePercent / 100;
+    let TargetFactor  = TargetPercent  / 100;
+    let MaxrateFactor = MaxratePercent / 100;
 
     // ─────────────────────────────────────────────────────────────────────────
     // Variables.vi.VideoInfo ist in dieser FileFlows-Version im ScriptNode LEER
@@ -69,7 +89,8 @@ function Script(CQ, Preset, SizePercent, BufsizeMultiplier, AQStrength, RcLookah
     if (bitrateBps <= 0) { Logger.ELog('Bitrate nicht ermittelbar - Skip'); return 2; }
 
     let srcMbps = bitrateBps / 1000000;
-    let maxrateMbps = Math.round(srcMbps * SizeFactor * 10) / 10;
+    let targetMbps = Math.round(srcMbps * TargetFactor * 10) / 10;
+    let maxrateMbps = Math.round(srcMbps * MaxrateFactor * 10) / 10;
     let bufsizeMbps = Math.round(maxrateMbps * BufsizeMultiplier * 10) / 10;
 
     // HDR / Dolby Vision Detection
@@ -85,8 +106,9 @@ function Script(CQ, Preset, SizePercent, BufsizeMultiplier, AQStrength, RcLookah
     let forceSDR       = (isDV && dvProfile === 5);
 
     Logger.ILog('Quelle: ' + srcMbps.toFixed(1) + ' Mbit/s');
-    Logger.ILog('Cap   : maxrate=' + maxrateMbps + ' Mbit/s  bufsize=' + bufsizeMbps + ' Mbit/s (<= ' +
-        SizePercent + '% der Quelle)');
+    Logger.ILog('Target : ' + targetMbps + ' Mbit/s (' + TargetPercent + '%)');
+    Logger.ILog('Cap    : maxrate=' + maxrateMbps + ' Mbit/s  bufsize=' + bufsizeMbps + ' Mbit/s (' +
+        MaxratePercent + '% der Quelle)');
     Logger.ILog('Color : HDR10=' + isHDR10 + ' DV=' + isDV + ' Profile=' + dvProfile + ' forceSDR=' + forceSDR);
 
     // ── ffmpeg-Argumente
@@ -101,7 +123,7 @@ function Script(CQ, Preset, SizePercent, BufsizeMultiplier, AQStrength, RcLookah
               '-pix_fmt', 'p010le',
               '-rc', 'vbr',
               '-cq', '' + CQ,
-              '-b:v', '0',
+              '-b:v', targetMbps + 'M',
               '-preset', Preset,
               '-tune', 'hq',
               '-multipass', 'fullres',
@@ -198,6 +220,25 @@ function Script(CQ, Preset, SizePercent, BufsizeMultiplier, AQStrength, RcLookah
         return 2;
     }
 
+    // ── GROESSEN-SICHERHEITSNETZ ──────────────────────────────────
+    // Output darf nicht wesentlich groesser sein als die Quelle.
+    // Toleranz: 5% (fuer Audio-Stream-Unterschiede / Metadaten).
+    // Bei Ueberschreitung: Encode verwerfen, Original behalten, Warnung.
+    let origSizeStat = Flow.Execute({ command: '/usr/bin/stat', argumentList: ['-c', '%s', inputFile] });
+    let origSize = parseInt((origSizeStat && origSizeStat.standardOutput) ? origSizeStat.standardOutput.trim() : '0', 10) || 0;
+    let newSizeStat = Flow.Execute({ command: '/usr/bin/stat', argumentList: ['-c', '%s', outFile] });
+    let newSize = parseInt((newSizeStat && newSizeStat.standardOutput) ? newSizeStat.standardOutput.trim() : '0', 10) || 0;
+
+    if (origSize > 0 && newSize > 0) {
+        let growthPct = ((newSize - origSize) / origSize) * 100;
+        Logger.ILog('Groesse: orig=' + origSize + ' bytes, output=' + newSize + ' bytes, growth=' + growthPct.toFixed(1) + '%');
+        if (growthPct > 5) {
+            Logger.WLog('GROESSEN-WARNUNG: Output ' + growthPct.toFixed(1) + '% groesser als Quelle -> Encode verworfen, Original bleibt.');
+            Flow.Execute({ command: '/bin/rm', argumentList: ['-f', outFile] });
+            return 2;
+        }
+    }
+
     Flow.SetWorkingFile(outFile);
     Logger.ILog('AV1 Encode erfolgreich -> ' + outFile);
     return 1;