diff --git a/trunk/doc/CHANGELOG.md b/trunk/doc/CHANGELOG.md
index 94f8ce731..4706ad1ca 100644
--- a/trunk/doc/CHANGELOG.md
+++ b/trunk/doc/CHANGELOG.md
@@ -8,6 +8,7 @@ The changelog for SRS.
 
 ## SRS 4.0 Changelog
 
+* v4.0, 2022-09-09, Fix [#3093](https://github.com/ossrs/srs/issues/3093): WebRTC: Ignore unknown fmtp for h.264. v4.0.263
 * v4.0, 2022-09-06, Fix [#3170](https://github.com/ossrs/srs/issues/3170): WebRTC: Support WHIP(WebRTC-HTTP ingestion protocol). v4.0.262
 * v4.0, 2022-09-03, Fix HTTP url parsing bug. v4.0.261
 * v4.0, 2022-09-03, For [#3167](https://github.com/ossrs/srs/issues/3167): WebRTC: Play stucked when republish. v4.0.260
diff --git a/trunk/src/app/srs_app_rtc_sdp.cpp b/trunk/src/app/srs_app_rtc_sdp.cpp
index fbaa70111..2b191a898 100644
--- a/trunk/src/app/srs_app_rtc_sdp.cpp
+++ b/trunk/src/app/srs_app_rtc_sdp.cpp
@@ -56,32 +56,39 @@ static void skip_first_spaces(std::string& str)
 srs_error_t srs_parse_h264_fmtp(const std::string& fmtp, H264SpecificParam& h264_param)
 {
     srs_error_t err = srs_success;
-    std::vector<std::string> vec = split_str(fmtp, ";");
+
+    std::vector<std::string> vec = srs_string_split(fmtp, ";");
     for (size_t i = 0; i < vec.size(); ++i) {
-        std::vector<std::string> kv = split_str(vec[i], "=");
-        if (kv.size() == 2) {
-            if (kv[0] == "profile-level-id") {
-                h264_param.profile_level_id = kv[1];
-            } else if (kv[0] == "packetization-mode") {
-                // 6.3.  Non-Interleaved Mode
-                // This mode is in use when the value of the OPTIONAL packetization-mode
-                // media type parameter is equal to 1.  This mode SHOULD be supported.
-                // It is primarily intended for low-delay applications.  Only single NAL
-                // unit packets, STAP-As, and FU-As MAY be used in this mode.  STAP-Bs,
-                // MTAPs, and FU-Bs MUST NOT be used.  The transmission order of NAL
-                // units MUST comply with the NAL unit decoding order.
-                // @see https://tools.ietf.org/html/rfc6184#section-6.3
-                h264_param.packetization_mode = kv[1];
-            } else if (kv[0] == "level-asymmetry-allowed") {
-                h264_param.level_asymmerty_allow = kv[1];
-            } else {
-                return srs_error_new(ERROR_RTC_SDP_DECODE, "invalid h264 param=%s", kv[0].c_str());
-            }
-        } else {
-            return srs_error_new(ERROR_RTC_SDP_DECODE, "invalid h264 param=%s", vec[i].c_str());
+        std::vector<std::string> kv = srs_string_split(vec[i], "=");
+        if (kv.size() != 2) continue;
+
+        if (kv[0] == "profile-level-id") {
+            h264_param.profile_level_id = kv[1];
+        } else if (kv[0] == "packetization-mode") {
+            // 6.3.  Non-Interleaved Mode
+            // This mode is in use when the value of the OPTIONAL packetization-mode
+            // media type parameter is equal to 1.  This mode SHOULD be supported.
+            // It is primarily intended for low-delay applications.  Only single NAL
+            // unit packets, STAP-As, and FU-As MAY be used in this mode.  STAP-Bs,
+            // MTAPs, and FU-Bs MUST NOT be used.  The transmission order of NAL
+            // units MUST comply with the NAL unit decoding order.
+            // @see https://tools.ietf.org/html/rfc6184#section-6.3
+            h264_param.packetization_mode = kv[1];
+        } else if (kv[0] == "level-asymmetry-allowed") {
+            h264_param.level_asymmerty_allow = kv[1];
         }
     }
 
+    if (h264_param.profile_level_id.empty()) {
+        return srs_error_new(ERROR_RTC_SDP_DECODE, "no h264 param: profile-level-id");
+    }
+    if (h264_param.packetization_mode.empty()) {
+        return srs_error_new(ERROR_RTC_SDP_DECODE, "no h264 param: packetization-mode");
+    }
+    if (h264_param.level_asymmerty_allow.empty()) {
+        return srs_error_new(ERROR_RTC_SDP_DECODE, "no h264 param: level-asymmetry-allowed");
+    }
+
     return err;
 }
 
diff --git a/trunk/src/core/srs_core_version4.hpp b/trunk/src/core/srs_core_version4.hpp
index a0c890d32..01b4f5d5e 100644
--- a/trunk/src/core/srs_core_version4.hpp
+++ b/trunk/src/core/srs_core_version4.hpp
@@ -9,6 +9,6 @@
 
 #define VERSION_MAJOR       4
 #define VERSION_MINOR       0
-#define VERSION_REVISION    262
+#define VERSION_REVISION    263
 
 #endif