diff --git a/modules/app_video.py b/modules/app_video.py
index 4ced921..6c29d85 100644
--- a/modules/app_video.py
+++ b/modules/app_video.py
@@ -17,7 +17,7 @@ CONVERT_SETTING = "video_convert_enabled"
 _thumbnail_lock = Semaphore()
 _generating = set()
 _generating_lock = Semaphore()
-_converting = set()
+_converting = {}   # path -> {"started_at": float, "source_size": int, "tmp_path": str}
 _converting_lock = Semaphore()
 
 
@@ -36,7 +36,7 @@ def queue_convert(relative_path, force=False):
     with _converting_lock:
         if relative_path in _converting:
             return False
-        _converting.add(relative_path)
+        _converting[relative_path] = {"started_at": time.time(), "source_size": 0, "tmp_path": ""}
     t = threading.Thread(target=_convert_bg, args=(relative_path,), daemon=True)
     t.start()
     return True
@@ -53,6 +53,11 @@ def _convert_bg(relative_path):
 
         try:
             tmp_path = mp4_path + ".converting.mp4"
+            source_size = os.path.getsize(source_path) if os.path.exists(source_path) else 0
+            with _converting_lock:
+                if relative_path in _converting:
+                    _converting[relative_path]["source_size"] = source_size
+                    _converting[relative_path]["tmp_path"] = tmp_path
             cmd = [
                 "ffmpeg", "-nostdin", "-loglevel", "error", "-y",
                 "-i", source_path,
@@ -84,7 +89,7 @@ def _convert_bg(relative_path):
             app_dash.end_local_video_use(relative_path)
     finally:
         with _converting_lock:
-            _converting.discard(relative_path)
+            _converting.pop(relative_path, None)
 
 
 def _local_path(relative_path):
@@ -117,7 +122,24 @@ def list_local_videos():
             errors.append(f"{relative_path}: {e}")
             continue
         with _converting_lock:
-            converting = relative_path in _converting
+            conv_info = _converting.get(relative_path)
+        converting = conv_info is not None
+        convert_progress = None
+        if converting and conv_info:
+            elapsed = time.time() - conv_info["started_at"]
+            source_size = conv_info["source_size"]
+            tmp_path = conv_info["tmp_path"]
+            tmp_size = 0
+            if tmp_path and os.path.exists(tmp_path):
+                try:
+                    tmp_size = os.path.getsize(tmp_path)
+                except OSError:
+                    pass
+            pct = round(tmp_size / source_size * 100) if source_size > 0 else 0
+            convert_progress = {
+                "elapsed_s": int(elapsed),
+                "pct": min(pct, 99),  # never show 100% until done
+            }
         files.append(
             {
                 "path": relative_path,
@@ -129,6 +151,7 @@ def list_local_videos():
                     stat.st_mtime,
                 ) in uploaded_stats,
                 "converting": converting,
+                "convert_progress": convert_progress,
             }
         )
         total_size += stat.st_size
diff --git a/static/js/local-videos.js b/static/js/local-videos.js
index a1f9ad8..e8e7cca 100644
--- a/static/js/local-videos.js
+++ b/static/js/local-videos.js
@@ -119,9 +119,12 @@
             preview.appendChild(mobileMeta);
             // Converting badge shown on mobile inside thumbnail cell
             if (file.converting) {
+                const p = file.convert_progress;
+                const elapsed = p ? `${Math.floor(p.elapsed_s / 60)}m${p.elapsed_s % 60}s` : '…';
+                const pct = p ? ` ${p.pct}%` : '';
                 const mobileBadge = document.createElement("span");
                 mobileBadge.className = "badge bg-info text-dark dash-thumb-converting mt-1";
-                mobileBadge.innerHTML = '<i class="fas fa-spinner fa-spin"></i>';
+                mobileBadge.innerHTML = `<i class="fas fa-spinner fa-spin me-1"></i>${pct || elapsed}`;
                 preview.appendChild(mobileBadge);
             }
             row.appendChild(preview);
@@ -143,13 +146,16 @@
             dateCell.className = "dash-col-date";
             row.appendChild(dateCell);
 
-            // Upload / convert badge
+            // Upload / convert badge (desktop)
             const upload = document.createElement("td");
             upload.className = "dash-col-upload";
             const badge = document.createElement("span");
             if (file.converting) {
+                const p = file.convert_progress;
+                const pct = p && p.pct > 0 ? ` ${p.pct}%` : '';
+                const elapsed = p ? ` ${Math.floor(p.elapsed_s / 60)}m${p.elapsed_s % 60}s` : '';
                 badge.className = "badge bg-info text-dark";
-                badge.innerHTML = '<i class="fas fa-spinner fa-spin me-1"></i>Converting';
+                badge.innerHTML = `<i class="fas fa-spinner fa-spin me-1"></i>Converting${pct}${elapsed}`;
                 convertingCount++;
             } else {
                 badge.className = file.uploaded ? "badge bg-success" : "badge bg-warning text-dark";