forwarder polish

tgbridge/forwarder.py

@@ -105,27 +105,57 @@ class TelegramForwarder:
 
             # --- START OF ENHANCED GIF HANDLING BLOCK ---
             # Telegram may send a GIF as an `animation` (the normal case) *or*
-            # as a generic `document`/`video` with MIME type `video/mp4`.  We want to
+            # as a muted `video` / `document` with a video MIME type.
-            # treat any of those as a potential GIF and try to convert it to a true
+            # Videos with an audio track are real videos → sent as-is.
-            # GIF for Discord auto‑looping.
+            # Silent videos are treated as GIFs → converted for Discord auto-loop.
             elif getattr(message, "animation", None) or (
                 getattr(message, "document", None) and message.document.mime_type.startswith("video")
             ) or message.video:
-                # Identify the file source
                 if message.animation:
                     file_id = message.animation.file_id
+                    is_animation = True
                 elif message.video:
                     file_id = message.video.file_id
+                    is_animation = False
                 else:
                     file_id = message.document.file_id
+                    is_animation = False
 
                 print(f"[GIF-HANDLER] Detected potential media (file_id={file_id})", flush=True)
                 file_data, filename = await self._download_file(file_id)
 
-                # Attempt conversion if it's a video/animation
+                # Probe for audio track to decide: real video or GIF?
+                convert_to_gif = is_animation  # animations never have audio
+
+                if not is_animation and shutil.which('ffprobe'):
+                    try:
+                        with tempfile.NamedTemporaryFile(suffix='.mp4', delete=False) as tmp:
+                            tmp.write(file_data)
+                            tmp_path = tmp.name
+
+                        probe = await asyncio.create_subprocess_exec(
+                            'ffprobe', '-v', 'error',
+                            '-select_streams', 'a',
+                            '-show_entries', 'stream=codec_type',
+                            '-of', 'csv=p=0',
+                            tmp_path,
+                            stdout=asyncio.subprocess.PIPE,
+                            stderr=asyncio.subprocess.PIPE
+                        )
+                        stdout, _ = await asyncio.wait_for(probe.communicate(), timeout=15.0)
+                        os.remove(tmp_path)
+
+                        # ffprobe outputs "audio" if an audio stream is present
+                        convert_to_gif = b'audio' not in stdout
+                        if not convert_to_gif:
+                            print("[GIF-HANDLER] Audio track detected — sending as video", flush=True)
+                    except Exception as e:
+                        print(f"[GIF-HANDLER] ffprobe failed, defaulting to convert: {e}", flush=True)
+                        convert_to_gif = True
+
+                if convert_to_gif:
                     # >>> FFMPEG GIF CONVERSION START >>>
                     try:
-
                         if not shutil.which('ffmpeg'):
                             raise RuntimeError("ffmpeg binary not found in PATH")