chore: demote 'Invalid URL format' logs to DEBUG level

These logs are harmless and can confuse users when they appear as errors.
Changed to DEBUG level and added actual URL to help with debugging.

Co-Authored-By: Claude Opus 4.5 <[email protected]>

Author: stackia

src/rtsp.c

@@ -442,7 +442,8 @@ int rtsp_parse_server_url(rtsp_session_t *session, const char *rtsp_url,
 
   /* Parse rtsp://host:port/path?query format */
   if (strncmp(url_copy, "rtsp://", 7) != 0) {
-    logger(LOG_ERROR, "RTSP: Invalid URL format, must start with rtsp://");
+    logger(LOG_DEBUG, "RTSP: Invalid URL format, must start with rtsp://: %s",
+           rtsp_url);
     return -1;
   }
 

src/service.c

@@ -258,8 +258,9 @@ service_t *service_create_from_udpxy_url(char *url) {
     /* RTSP service - use service_create_from_rtsp_url */
     return service_create_from_rtsp_url(url);
   } else {
-    logger(LOG_ERROR,
-           "Invalid URL format (must start with /rtp/, /udp/, or /rtsp/)");
+    logger(LOG_DEBUG,
+           "Invalid URL format (must start with /rtp/, /udp/, or /rtsp/): %s",
+           url);
     return NULL;
   }
 }