diff --git a/docker/main/rootfs/usr/local/nginx/conf/nginx.conf b/docker/main/rootfs/usr/local/nginx/conf/nginx.conf
index d954bdcd52..f7c6114bb4 100644
--- a/docker/main/rootfs/usr/local/nginx/conf/nginx.conf
+++ b/docker/main/rootfs/usr/local/nginx/conf/nginx.conf
@@ -204,7 +204,12 @@ http {
             limit_except GET {
                 deny  all;
             }
-            proxy_pass http://go2rtc/api/ws;
+            # Request H.264 from go2rtc for browser MSE compatibility.
+            # H.265 cameras with non-standard PPS parameter sets cause Chrome's
+            # MSE decoder to receive the init segment but stall on media fragments,
+            # triggering a 6-second timeout and fallback to low-bandwidth JPEG mode.
+            set $args "${args}&video=h264&audio=aac";
+            proxy_pass http://go2rtc/api/ws?$args;
             include proxy.conf;
         }