able to process audio with different model; new project button

frontend/src/App.tsx

@@ -20,6 +20,8 @@ import {
   Save,
   Scissors,
   VolumeX,
+  FilePlus2,
+  RefreshCw,
 } from 'lucide-react';
 
 const IS_ELECTRON = !!window.electronAPI;
@@ -31,12 +33,14 @@ export default function App() {
   const {
     videoPath,
     words,
+    transcriptionModel,
     isTranscribing,
     transcriptionProgress,
     transcriptionStatus,
     loadVideo,
     setBackendUrl,
     setTranscription,
+    setTranscriptionModel,
     setTranscribing,
     backendUrl,
     selectedWordIndices,
@@ -49,6 +53,7 @@ export default function App() {
   const [whisperModel, setWhisperModel] = useState('base');
   const [cutMode, setCutMode] = useState(false);
   const [muteMode, setMuteMode] = useState(false);
+  const [showReprocessConfirm, setShowReprocessConfirm] = useState(false);
   const fileInputRef = useRef<HTMLInputElement>(null);
 
   useKeyboardShortcuts();
@@ -137,6 +142,17 @@ export default function App() {
     }
   };
 
+  const handleNewProject = () => {
+    const shouldReset = window.confirm('Start a new project? Unsaved changes in the current session will be lost.');
+    if (!shouldReset) return;
+
+    useEditorStore.getState().reset();
+    setActivePanel(null);
+    setManualPath('');
+    setCutMode(false);
+    setMuteMode(false);
+  };
+
   const handleManualSubmit = async (e: React.FormEvent) => {
     e.preventDefault();
     const path = manualPath.trim();
@@ -177,6 +193,7 @@ export default function App() {
       setTranscribing(true, 20, 'Transcribing audio...');
       const data = await window.electronAPI.transcribe(path, whisperModel);
       setTranscription(data);
+      setTranscriptionModel(whisperModel);
     } catch (err) {
       console.error('Transcription error:', err);
       alert(`Transcription failed. Check the console for details.\n\n${err}`);
@@ -185,6 +202,22 @@ export default function App() {
     }
   };
 
+  const handleReprocessProject = async () => {
+    if (!videoPath) return;
+    if (!window.electronAPI?.transcribe) {
+      alert('Reprocessing is only available in desktop mode.');
+      return;
+    }
+
+    setShowReprocessConfirm(true);
+  };
+
+  const confirmReprocessProject = async () => {
+    if (!videoPath) return;
+    setShowReprocessConfirm(false);
+    await transcribeVideo(videoPath);
+  };
+
   const togglePanel = (panel: Panel) => {
     setActivePanel((prev) => (prev === panel ? null : panel));
   };
@@ -326,8 +359,18 @@ export default function App() {
           <span className="text-sm font-medium truncate max-w-[300px]">
             {videoPath.split(/[\\/]/).pop()}
           </span>
+          {transcriptionModel && (
+            <span className="px-2 py-0.5 rounded border border-editor-border bg-editor-surface text-[10px] uppercase tracking-wide text-editor-text-muted">
+              Model: {transcriptionModel}
+            </span>
+          )}
         </div>
-        <div className="flex items-center gap-1">
+        <div className="flex items-center gap-2">
+          <ToolbarButton
+            icon={<FilePlus2 className="w-4 h-4" />}
+            label="New"
+            onClick={handleNewProject}
+          />
           <ToolbarButton
             icon={<FolderOpen className="w-4 h-4" />}
             label="Open"
@@ -367,6 +410,42 @@ export default function App() {
             onClick={() => togglePanel('silence')}
             disabled={!videoPath}
           />
+          <div className="flex items-center gap-1.5 px-2 py-1 rounded-md bg-editor-surface border border-editor-border">
+            <select
+              value={whisperModel}
+              onChange={(e) => setWhisperModel(e.target.value)}
+              className="bg-transparent text-xs text-editor-text focus:outline-none"
+              title="Transcription model"
+            >
+              <optgroup label="Multilingual">
+                <option value="tiny">tiny</option>
+                <option value="base">base</option>
+                <option value="small">small</option>
+                <option value="medium">medium</option>
+                <option value="large-v2">large-v2</option>
+                <option value="large-v3">large-v3</option>
+                <option value="large-v3-turbo">large-v3-turbo</option>
+                <option value="distil-large-v3">distil-large-v3</option>
+              </optgroup>
+              <optgroup label="English">
+                <option value="tiny.en">tiny.en</option>
+                <option value="base.en">base.en</option>
+                <option value="small.en">small.en</option>
+                <option value="medium.en">medium.en</option>
+                <option value="distil-small.en">distil-small.en</option>
+                <option value="distil-medium.en">distil-medium.en</option>
+              </optgroup>
+            </select>
+            <button
+              onClick={handleReprocessProject}
+              disabled={isTranscribing || !videoPath}
+              title="Reprocess transcript with selected model"
+              className="flex items-center gap-1 px-2 py-1 rounded text-xs text-editor-text-muted hover:text-editor-text hover:bg-editor-bg disabled:opacity-40 disabled:cursor-not-allowed"
+            >
+              <RefreshCw className={`w-3 h-3 ${isTranscribing ? 'animate-spin' : ''}`} />
+              Reprocess
+            </button>
+          </div>
           <ToolbarButton
             icon={<Sparkles className="w-4 h-4" />}
             label="AI"
@@ -449,6 +528,37 @@ export default function App() {
         )}
       </div>
       {import.meta.env.DEV && <DevPanel />}
+
+      {showReprocessConfirm && (
+        <div
+          className="fixed inset-0 z-[60] flex items-center justify-center bg-black/60 px-4"
+          onClick={() => setShowReprocessConfirm(false)}
+        >
+          <div
+            className="w-full max-w-md rounded-xl border border-editor-border bg-editor-bg p-4 space-y-3"
+            onClick={(e) => e.stopPropagation()}
+          >
+            <h3 className="text-sm font-semibold">Reprocess transcript?</h3>
+            <p className="text-xs text-editor-text-muted leading-relaxed">
+              This will reprocess the current file with <span className="text-editor-text font-medium">{whisperModel}</span> and replace the current transcript words and timings.
+            </p>
+            <div className="flex items-center justify-end gap-2 pt-1">
+              <button
+                onClick={() => setShowReprocessConfirm(false)}
+                className="px-3 py-1.5 rounded-md text-xs text-editor-text-muted hover:text-editor-text hover:bg-editor-surface"
+              >
+                Cancel
+              </button>
+              <button
+                onClick={confirmReprocessProject}
+                className="px-3 py-1.5 rounded-md text-xs bg-editor-accent hover:bg-editor-accent-hover text-white"
+              >
+                Reprocess Now
+              </button>
+            </div>
+          </div>
+        </div>
+      )}
     </div>
   );
 }

frontend/src/store/editorStore.ts

@@ -23,6 +23,7 @@ interface EditorState {
   cutRanges: CutRange[];
   muteRanges: MuteRange[];
   silenceTrimGroups: SilenceTrimGroup[];
+  transcriptionModel: string | null;
   language: string;
 
   currentTime: number;
@@ -45,6 +46,7 @@ interface EditorActions {
   setBackendUrl: (url: string) => void;
   loadVideo: (path: string) => void;
   setExportedAudioPath: (path: string | null) => void;
+  setTranscriptionModel: (model: string | null) => void;
   saveProject: () => ProjectFile;
   setTranscription: (result: TranscriptionResult) => void;
   setCurrentTime: (time: number) => void;
@@ -85,6 +87,7 @@ const initialState: EditorState = {
   cutRanges: [],
   muteRanges: [],
   silenceTrimGroups: [],
+  transcriptionModel: null,
   language: '',
   currentTime: 0,
   duration: 0,
@@ -136,8 +139,10 @@ export const useEditorStore = create<EditorState & EditorActions>()(
 
       setExportedAudioPath: (path) => set({ exportedAudioPath: path }),
 
+      setTranscriptionModel: (model) => set({ transcriptionModel: model }),
+
       saveProject: (): ProjectFile => {
-        const { videoPath, words, segments, deletedRanges, cutRanges, muteRanges, silenceTrimGroups, language, exportedAudioPath } = get();
+        const { videoPath, words, segments, deletedRanges, cutRanges, muteRanges, silenceTrimGroups, transcriptionModel, language, exportedAudioPath } = get();
         if (!videoPath) throw new Error('No video loaded');
         const now = new Date().toISOString();
         // Strip globalStartIndex (runtime-only field) before persisting
@@ -146,6 +151,7 @@ export const useEditorStore = create<EditorState & EditorActions>()(
           version: 1,
           videoPath,
           exportedAudioPath: exportedAudioPath ?? undefined,
+          transcriptionModel: transcriptionModel ?? undefined,
           words,
           segments: persistSegments as unknown as Segment[],
           deletedRanges,
@@ -410,6 +416,7 @@ export const useEditorStore = create<EditorState & EditorActions>()(
           cutRanges: data.cutRanges || [],
           muteRanges: data.muteRanges || [],
           silenceTrimGroups: data.silenceTrimGroups || [],
+          transcriptionModel: data.transcriptionModel ?? null,
           language: data.language || '',
           exportedAudioPath: data.exportedAudioPath ?? null,
         });

frontend/src/types/project.ts

@@ -58,6 +58,7 @@ export interface ProjectFile {
   version: 1;
   videoPath: string;
   exportedAudioPath?: string;   // path to modified/processed audio if it exists
+  transcriptionModel?: string;
   words: Word[];
   segments: Segment[];
   deletedRanges: DeletedRange[];