Fix call encoder levels under comma decimal locales

tools/chatgui/src/live_video_encoder.cpp

@@ -163,10 +163,13 @@ bool LiveVideoEncoder::open(const LiveVideoConfig& config) {
                 if (constrained) {
                     c->thread_count = 1;
                     av_dict_set(&options, "profile", name == "libx264" ? "baseline" : "main", 0);
-                    QByteArray level = QByteArray::number(config.level / (name == "libx264" ? 10.0 : 30.0), 'f', 1);
+                    // Оба encoder принимают level × 10 целым: дробный разбор зависит от LC_NUMERIC.
+                    QByteArray level = QByteArray::number(name == "libx264" ? config.level : config.level / 3);
                     params += ":ref=1:";
                     if (name == "libx264") params += "level=" + level;
                     else params += "level-idc=" + level + ":high-tier=0:hrd=0:info=0:scenecut=0";
+                    DEBUG_DEBUG(DEBUG_CATEGORY_VIDEO, "live encoder level name=%s contract=%d parameter=%s",
+                        name.constData(), config.level, level.constData());
                 }
                 av_dict_set(&options, name == "libx264" ? "x264-params" : "x265-params", params.constData(), 0);
             } else if (name.endsWith("_nvenc")) {