diff --git a/README.md b/README.md
index 5a9d4c48..a614d218 100644
--- a/README.md
+++ b/README.md
@@ -79,7 +79,7 @@ The script must be executed via `sudo` from the user that owns the repo. It will
 
 Publishing rovers lives on a trusted network, so the shipped config (tracked at `server/mediamtx/mediamtx.yml`) skips HTTP auth for SRT ingest and whitelists any path that matches `rover-*`. The installer overwrites `/etc/mediamtx/mediamtx.yml` every time you run it—if you need to tweak ports or add TURN servers, edit the template in the repo and rerun `install_server.sh` so every box stays in sync automatically.
 
-Once finished, update `server/config.yaml` with your admin passwords and `media.whepBaseUrl` (`http://192.168.0.86:8889`). The client automatically requests `http://<base>/<rover-id>/whep`, so you never have to embed IDs or path templates. Restart `multirover.service` whenever you edit the config. To pull updates later, just `git pull`, re-run `npm install --production` inside `server/`, and restart the service—no need to rerun the installer.
+Once finished, update `server/config.yaml` with your admin passwords and `media.whepBaseUrl` (for example `http://192.168.0.86:8889/video`). The client automatically requests `http://<base>/<rover-id>/whep`, so include whatever path prefix your reverse proxy exposes (e.g. `/video`). Restart `multirover.service` whenever you edit the config. To pull updates later, just `git pull`, re-run `npm install --production` inside `server/`, and restart the service—no need to rerun the installer.
 
 ### Video handshake + diagnostics
 
diff --git a/server/config.example.yaml b/server/config.example.yaml
index 06d2ffe5..2934c1d6 100644
--- a/server/config.example.yaml
+++ b/server/config.example.yaml
@@ -8,6 +8,7 @@ admins:
     discord_id: "0987654321"
     lockdown: true
 media:
-  # Base address for mediaMTX (scheme + host + optional port). The UI will always request
+  # Base address for mediaMTX (scheme + host + optional port/path). The UI will always request
   #   http://<base>/<roverId>/whep
-  whepBaseUrl: "http://192.168.0.86:8889"
+  # Example: http://192.168.0.86:8889/video
+  whepBaseUrl: "http://192.168.0.86:8889/video"
diff --git a/server/src/services/videoSocketService.js b/server/src/services/videoSocketService.js
index 28de934a..276700d7 100644
--- a/server/src/services/videoSocketService.js
+++ b/server/src/services/videoSocketService.js
@@ -14,14 +14,14 @@ function buildWhepUrl(roverId) {
   if (!base) {
     return '';
   }
-  let origin;
+  let prefix = base;
   try {
     const parsed = new URL(base);
-    origin = parsed.origin;
+    prefix = `${parsed.origin}${parsed.pathname}`;
   } catch (err) {
-    origin = base.replace(/\/.*$/, '');
+    // leave prefix as-is when URL parsing fails; fall back to string cleanup below
   }
-  const cleanBase = origin.replace(/\/$/, '');
+  const cleanBase = prefix.replace(/\/+$/, '');
   const encodedId = encodeURIComponent(roverId);
   return `${cleanBase}/${encodedId}/whep`;
 }