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public/index.html

@@ -221,15 +221,15 @@
               <div class="row">
                 <div class="col">
                   <label>帧率 (16-60)</label>
-                  <input id="w21_fps" type="number" min="16" max="60" step="1" value="24">
+                  <input id="w21_fps" type="number" min="16" max="60" step="1" value="16">
                 </div>
                 <div class="col">
                   <label>步数 (T2V:10-30, I2V:20-50)</label>
                   <input id="w21_steps" type="number" min="10" max="50" step="1" value="25">
                 </div>
                 <div class="col">
-                  <label>帧数 (T2V:81-241, I2V:固定81)</label>
-                  <input id="w21_frames" type="number" min="81" max="241" step="1" value="81">
+                  <label>帧数 (T2V:81-241必须4n+1, I2V:固定81)</label>
+                  <input id="w21_frames" type="number" min="81" max="241" step="4" value="81">
                 </div>
               </div>
               <div class="row">

server.js

@@ -343,9 +343,13 @@ app.post('/api/wan21/text2video', async (req, res) => {
   function clampNum(v, min, max) { if (v===undefined||v===null||v==='') return undefined; const n=Number(v); if(!Number.isFinite(n)) return undefined; return Math.max(min, Math.min(max, n)); }
   function toBool(v){ if(typeof v==='boolean') return v; if(v==='true'||v==='1'||v===1) return true; if(v==='false'||v==='0'||v===0) return false; return undefined; }
 
-  const fps            = clampInt(clean.fps, 16, 60) ?? 24;
+  const fps            = clampInt(clean.fps, 16, 60) ?? 16;
   const steps          = clampInt(clean.steps, 10, 30) ?? 25;
-  const frames         = clean.frames === null ? null : (clampInt(clean.frames, 81, 241) ?? 81);
+  let frames           = clean.frames === null ? null : (clampInt(clean.frames, 81, 241) ?? 81);
+  // 确保frames符合4n+1格式（single_frame时为1）
+  if (frames !== null && frames !== 1) {
+    frames = frames - (frames % 4) + 1;
+  }
   const seed           = clean.seed === null ? null : clampInt(clean.seed, -2147483648, 2147483647);
   const sample_shift   = clean.sample_shift === null ? null : clampNum(clean.sample_shift, 1, 7);
   const single_frame   = toBool(clean.single_frame);
@@ -365,7 +369,7 @@ app.post('/api/wan21/text2video', async (req, res) => {
   if (guidance_scale !== undefined) finalArgs.guidance_scale = guidance_scale;
   if (negative_prompt !== undefined) finalArgs.negative_prompt = negative_prompt;
 
-  console.log('[WAN2.1 text2video] final args ->', { keys:Object.keys(finalArgs), promptLen:prompt.length, resolution: finalArgs.resolution || '(default)' });
+  console.log('[WAN2.1 text2video] final args ->', { keys:Object.keys(finalArgs), promptLen:prompt.length, frames, resolution: finalArgs.resolution || '(default)' });
 
   try {
     const url = 'https://chutes-wan2-1-14b.chutes.ai/text2video';