[Session] Changed unknown SampleDescription warning log to debug

src/Session.cpp

@@ -1609,9 +1609,13 @@ AP4_Movie* CSession::CreateMovieAtom(CStream* stream)
     }
     else
     {
-      LOG::LogF(LOGWARNING,
-                "Created sample desciption atom of unknown type, codec \"%s\" is not handled",
-                stream->m_info.GetCodecName().c_str());
+      // Codecs like audio types, will have unknown SampleDescription, because to create an appropriate
+      // audio SampleDescription atom require different code rework. This means also that CFragmentedSampleReader
+      // will use a generic CodecHandler instead of AudioCodecHandler, because will be not able do determine the codec
+      LOG::LogF(
+          LOGDEBUG,
+          "Created sample description atom of unknown type for codec \"%s\" because unhandled",
+          stream->m_info.GetCodecName().c_str());
       sampleDesc = new AP4_SampleDescription(AP4_SampleDescription::TYPE_UNKNOWN, 0, 0);
     }