add more debug to diagnose h264

Overlord-Client/cmd/agent/handlers/command.go

@@ -449,6 +449,8 @@ func HandleCommand(ctx context.Context, env *runtime.Env, envelope map[string]in
 		payload, _ := envelope["payload"].(map[string]interface{})
 		quality := 90
 		codec := ""
+		reason := ""
+		source := ""
 		if payload != nil {
 			if q, ok := payloadInt(payload, "quality"); ok {
 				quality = q
@@ -456,8 +458,18 @@ func HandleCommand(ctx context.Context, env *runtime.Env, envelope map[string]in
 			if v, ok := payload["codec"].(string); ok {
 				codec = v
 			}
+			if v, ok := payload["reason"].(string); ok {
+				reason = strings.TrimSpace(v)
 			}
+			if v, ok := payload["source"].(string); ok {
+				source = strings.TrimSpace(v)
+			}
+		}
+		if source != "" || reason != "" {
+			log.Printf("desktop: set quality=%d codec=%s source=%s reason=%s", quality, codec, source, reason)
+		} else {
 			log.Printf("desktop: set quality=%d codec=%s", quality, codec)
+		}
 		capture.SetQualityAndCodec(quality, codec)
 		sendCommandResultSafe(env, cmdID, true, "")
 		return nil

Overlord-Server/public/assets/remotedesktop.js

@@ -486,18 +486,44 @@ import { encodeMsgpack, decodeMsgpack } from "./msgpack-helpers.js";
     h264TimestampUs = 0;
   }
 
+  function normalizeFallbackReason(reason) {
+    if (!reason) return "unspecified";
+    if (typeof reason === "string") return reason;
+    if (reason instanceof Error) return reason.message || String(reason);
+    if (typeof reason === "object") {
+      if (typeof reason.message === "string" && reason.message) {
+        return reason.message;
+      }
+      if (typeof reason.name === "string" && reason.name) {
+        return reason.name;
+      }
+      try {
+        return JSON.stringify(reason);
+      } catch {
+        return String(reason);
+      }
+    }
+    return String(reason);
+  }
+
   function fallbackToJpegCodec(reason) {
     if (!prefersH264) return;
+    const reasonText = normalizeFallbackReason(reason);
     prefersH264 = false;
     h264LowFpsStreak = 0;
     destroyVideoDecoder();
     if (codecH264) codecH264.checked = false;
     localStorage.setItem(codecPrefKey, "0");
-    console.warn("rd: falling back to jpeg codec", reason || "");
+    console.warn("rd: falling back to jpeg codec", reasonText);
     const q = Number(qualitySlider?.value) || 90;
     setCodecModeLabel("jpeg", "fallback");
     if (ws.readyState === WebSocket.OPEN) {
-      sendCmd("desktop_set_quality", { quality: q, codec: "jpeg" });
+      sendCmd("desktop_set_quality", {
+        quality: q,
+        codec: "jpeg",
+        source: "viewer_fallback",
+        reason: reasonText,
+      });
     }
   }
 

Overlord-Server/src/server/ws-console-rd-hvnc.ts

@@ -260,12 +260,23 @@ export function handleRemoteDesktopViewerMessage(ws: ServerWebSocket<SocketData>
     case "desktop_set_quality": {
       const newQuality = Number(payload.quality) || 90;
       const newCodec = String(payload.codec || "").toLowerCase();
+      const reason = typeof payload.reason === "string"
+        ? payload.reason.slice(0, 512)
+        : "";
+      const source = typeof payload.source === "string"
+        ? payload.source.slice(0, 128)
+        : "";
       if (state.quality !== newQuality || state.codec !== newCodec) {
-        sendDesktopCommand(target, "desktop_set_quality", { quality: newQuality, codec: newCodec });
+        sendDesktopCommand(target, "desktop_set_quality", {
+          quality: newQuality,
+          codec: newCodec,
+          ...(reason ? { reason } : {}),
+          ...(source ? { source } : {}),
+        });
         state.quality = newQuality;
         state.codec = newCodec;
         rdStreamingState.set(clientId, state);
-        logger.debug(`[rd] set quality=${newQuality} codec=${newCodec || "(default)"}`);
+        logger.debug(`[rd] set quality=${newQuality} codec=${newCodec || "(default)"}${source ? ` source=${source}` : ""}${reason ? ` reason=${reason}` : ""}`);
       }
       break;
     }