diff --git a/plugins/webrtc/package-lock.json b/plugins/webrtc/package-lock.json
index 402d0e7b2..0ebae3810 100644
--- a/plugins/webrtc/package-lock.json
+++ b/plugins/webrtc/package-lock.json
@@ -1,12 +1,12 @@
 {
    "name": "@scrypted/webrtc",
-   "version": "0.0.32",
+   "version": "0.0.33",
    "lockfileVersion": 2,
    "requires": true,
    "packages": {
       "": {
          "name": "@scrypted/webrtc",
-         "version": "0.0.32",
+         "version": "0.0.33",
          "dependencies": {
             "@koush/werift": "file:../../external/werift/packages/webrtc",
             "@scrypted/common": "file:../../common",
diff --git a/plugins/webrtc/package.json b/plugins/webrtc/package.json
index d741157d5..0d8878065 100644
--- a/plugins/webrtc/package.json
+++ b/plugins/webrtc/package.json
@@ -1,6 +1,6 @@
 {
    "name": "@scrypted/webrtc",
-   "version": "0.0.32",
+   "version": "0.0.33",
    "scripts": {
       "prepublishOnly": "NODE_ENV=production scrypted-webpack",
       "prescrypted-vscode-launch": "scrypted-webpack",
diff --git a/plugins/webrtc/src/ffmpeg-to-wrtc.ts b/plugins/webrtc/src/ffmpeg-to-wrtc.ts
index a9d097f7c..20785de48 100644
--- a/plugins/webrtc/src/ffmpeg-to-wrtc.ts
+++ b/plugins/webrtc/src/ffmpeg-to-wrtc.ts
@@ -238,7 +238,7 @@ export async function createRTCPeerConnectionSink(
             );
 
             const scaleFilter = `scale='min(${width},iw)':-2`;
-            if (ffmpegInput.h264FilterArguments.length) {
+            if (ffmpegInput.h264FilterArguments?.length) {
                 const filterIndex = ffmpegInput.h264FilterArguments?.findIndex(f => f === '-filter_complex');
                 if (filterIndex !== undefined && filterIndex !== -1)
                     ffmpegInput.h264FilterArguments[filterIndex + 1] = ffmpegInput.h264FilterArguments[filterIndex + 1] + `[unscaled] ; [unscaled] ${scaleFilter}`;
@@ -246,6 +246,7 @@ export async function createRTCPeerConnectionSink(
                     ffmpegInput.h264FilterArguments.push('-filter_complex', scaleFilter);
             }
             else {
+                ffmpegInput.h264FilterArguments = ffmpegInput.h264FilterArguments || [];
                 ffmpegInput.h264FilterArguments.push('-filter_complex', scaleFilter);
             }