better handling on web player

desktop/src/scripts/anime/player.js

@@ -649,6 +649,7 @@ const AnimePlayer = (function() {
         }
         if (currentExt === 'local') {
             try {
+
                 const localId = await getLocalEntryId();
                 if (!localId) {
                     setLoading("Local entry not found in library.");
@@ -658,11 +659,20 @@ const AnimePlayer = (function() {
                 const eps = await check.json();
 
                 if (!eps.includes(_currentEpisode)) {
-                    // 🔥 forzar online
                     els.extSelect.value = _entrySource;
                     return loadStream();
                 }
 
+                const ext = localUrl.split('.').pop().toLowerCase();
+
+                if (!['mp4'].includes(ext)) {
+                    setLoading(
+                        `Currently the web player only supports mp4 files.`
+                    );
+                    if (els.mpvBtn) els.mpvBtn.style.display = 'flex';
+                    return;
+                }
+
                 _rawVideoData = {
                     url: window.location.origin + localUrl,
                     headers: {}