fix: move LayoutStudio before per-audio section and add ultrafast preset + 1fps output

- LayoutStudio was buried after the per-audio list, making settings invisible
  before submit; moved it right after the Files section so layout/watermark
  settings are always visible in the workflow
- Add -preset ultrafast and -r 1 to both libx264 encode paths; without a
  preset FFmpeg defaults to medium and wastes time on motion estimation for
  still images; -r 1 avoids 25x frame synthesis overhead on 1080p

components/UploadForm.tsx

@@ -478,6 +478,31 @@ export function UploadForm() {
         </div>
       </section>
 
+      <LayoutStudio
+        locked={false}
+        previewImageUrl={
+          audioItems.find((a) => a.itemImagePreview)?.itemImagePreview || imagePreviewUrl
+        }
+        previewBackgroundUrl={backgroundPreviewUrl}
+        songTitle={
+          audioItems[0]?.metadata.songTitle ||
+          audioItems[0]?.metadata.title ||
+          "Track title"
+        }
+        artist={audioItems[0]?.metadata.artist || ""}
+        encodeWidth={parseInt(readyAudios[0]?.metadata.resolution?.split("x")[0] || "1280", 10)}
+        layout={jobLayout}
+        onLayoutChange={applyLayoutToAll}
+        watermark={jobWatermark}
+        onWatermarkChange={applyWatermarkToAll}
+        onUploadLogo={handleLogoUpload}
+        onUploadFont={handleFontUpload}
+        onUploadBackground={handleBackgroundUpload}
+        onClearBackground={clearBackgroundImage}
+        hasCustomBackground={Boolean(backgroundImagePath)}
+        logoPreviewUrl={logoPreviewUrl}
+      />
+
       {audioItems.length > 0 && (
         <section className="space-y-4">
           <h2 className="text-lg font-medium text-white">Video details (per audio)</h2>
@@ -640,31 +665,6 @@ export function UploadForm() {
         </section>
       )}
 
-      <LayoutStudio
-        locked={false}
-        previewImageUrl={
-          audioItems.find((a) => a.itemImagePreview)?.itemImagePreview || imagePreviewUrl
-        }
-        previewBackgroundUrl={backgroundPreviewUrl}
-        songTitle={
-          audioItems[0]?.metadata.songTitle ||
-          audioItems[0]?.metadata.title ||
-          "Track title"
-        }
-        artist={audioItems[0]?.metadata.artist || ""}
-        encodeWidth={parseInt(readyAudios[0]?.metadata.resolution?.split("x")[0] || "1280", 10)}
-        layout={jobLayout}
-        onLayoutChange={applyLayoutToAll}
-        watermark={jobWatermark}
-        onWatermarkChange={applyWatermarkToAll}
-        onUploadLogo={handleLogoUpload}
-        onUploadFont={handleFontUpload}
-        onUploadBackground={handleBackgroundUpload}
-        onClearBackground={clearBackgroundImage}
-        hasCustomBackground={Boolean(backgroundImagePath)}
-        logoPreviewUrl={logoPreviewUrl}
-      />
-
       <button
         type="submit"
         disabled={!canSubmit}

lib/ffmpeg/encode.ts

@@ -283,8 +283,12 @@ export async function encodeVideo(options: {
     args.push(
       "-c:v",
       "libx264",
+      "-preset",
+      "ultrafast",
       "-tune",
       "stillimage",
+      "-r",
+      "1",
     );
     pushAudioEncodeArgs(args, audioEncode);
     args.push(
@@ -382,8 +386,12 @@ export async function encodeVideo(options: {
   args.push(
     "-c:v",
     "libx264",
+    "-preset",
+    "ultrafast",
     "-tune",
     "stillimage",
+    "-r",
+    "1",
   );
   pushAudioEncodeArgs(args, audioEncode);
   args.push(