fix: support video durations from 5 to 14 seconds

server.mjs

@@ -534,10 +534,6 @@ function requireCustomerToken(request, taskId = "") {
   return token;
 }
 
-function clamp(value, min, max) {
-  return Math.min(max, Math.max(min, value));
-}
-
 function resolveResolution(model = "", requested = "720p") {
   return requested === "480p" ? "480p" : "720p";
 }
@@ -562,6 +558,10 @@ function buildVideoPayload(body) {
     throw new ClientError("参考视频最多 3 条，且必须是公网可访问的 MP4/MOV URL");
   }
   if (!String(body.prompt || "").trim()) throw new ClientError("请填写分镜提示词");
+  const duration = Number(body.duration);
+  if (!Number.isInteger(duration) || duration < 5 || duration > 14) {
+    throw new ClientError("视频时长必须是 5～14 秒之间的整数");
+  }
   return {
     model: resolveVideoModel(body.model),
     content: [
@@ -577,7 +577,7 @@ function buildVideoPayload(body) {
         role: "reference_video",
       })),
     ],
-    duration: clamp(Number(body.duration || 5), 4, 15),
+    duration,
     resolution: resolveResolution(body.model, body.resolution),
     ratio: body.ratio || "9:16",
     generate_audio: body.generateAudio !== false,