fix: prefer preview-compatible audio recording formats

frontend/src/hooks/useAudioRecorder.ts

@@ -18,14 +18,31 @@ export function useAudioRecorder() {
 
   /** Choisit le meilleur mimeType supporté par le navigateur. */
   const getMimeType = useCallback(() => {
-    const types = [
+    const audio = document.createElement("audio");
-      "audio/webm;codecs=opus",
+    const isAppleDevice = /iPhone|iPad|iPod|Mac/.test(navigator.userAgent);
-      "audio/webm",
+
-      "audio/mp4",
+    const types = isAppleDevice
-      "audio/ogg;codecs=opus",
+      ? [
-    ];
+          "audio/mp4",
+          "audio/webm;codecs=opus",
+          "audio/webm",
+          "audio/ogg;codecs=opus",
+        ]
+      : [
+          "audio/webm;codecs=opus",
+          "audio/webm",
+          "audio/ogg;codecs=opus",
+          "audio/mp4",
+        ];
+
     for (const type of types) {
-      if (MediaRecorder.isTypeSupported(type)) return type;
+      const baseType = type.split(";")[0];
+      if (
+        MediaRecorder.isTypeSupported(type) &&
+        audio.canPlayType(baseType) !== ""
+      ) {
+        return type;
+      }
     }
     return ""; // fallback : le navigateur choisira
   }, []);
@@ -45,7 +62,8 @@ export function useAudioRecorder() {
         audio: {
           echoCancellation: true,
           noiseSuppression: true,
-          sampleRate: 44100,
+          autoGainControl: true,
+          channelCount: 1,
         },
       });
       streamRef.current = stream;

frontend/src/pages/Recipes/RecipeForm.tsx

@@ -83,6 +83,7 @@ export default function RecipeForm() {
   const [audioFile, setAudioFile] = useState<File | null>(null)
   const [pageState, setPageState] = useState<PageState>("idle")
   const [error, setError] = useState("")
+  const [previewError, setPreviewError] = useState("")
   const [recordingTime, setRecordingTime] = useState(0)
   const [user, setUser] = useState<User | null>(null)
   const [tipIndex, setTipIndex] = useState(0)
@@ -119,6 +120,7 @@ export default function RecipeForm() {
     setAudioFile(file)
     setPageState("review")
     setError("")
+    setPreviewError("")
   }, [currentRecording])
 
   // Timer
@@ -572,7 +574,9 @@ export default function RecipeForm() {
                       if (isPlaying) {
                         audio.pause()
                       } else {
-                        audio.play()
+                        audio.play().catch(() => {
+                          setPreviewError("Impossible de lire cet aperçu audio sur ce navigateur.")
+                        })
                       }
                     }}
                     className="h-12 w-12 shrink-0 rounded-full bg-gradient-to-br from-orange-500 to-amber-500 text-white shadow-md flex items-center justify-center hover:shadow-lg hover:scale-105 transition-all"
@@ -612,15 +616,20 @@ export default function RecipeForm() {
                 <audio
                   id="review-audio"
                   src={audioUrl}
+                  preload="metadata"
                   onPlay={() => setIsPlaying(true)}
                   onPause={() => setIsPlaying(false)}
                   onEnded={() => setIsPlaying(false)}
+                  onError={() => setPreviewError("La lecture de l'aperçu audio a échoué.")}
                   className="hidden"
                 />
 
                 <div className="mt-3 text-[11px] text-muted-foreground text-right">
                   {(audioFile.size / 1024).toFixed(0)} KB
                 </div>
+                {previewError && (
+                  <p className="mt-2 text-xs text-red-500 text-right">{previewError}</p>
+                )}
               </div>
 
               {/* Actions */}