Update app.py

app.py

@@ -298,11 +298,28 @@ def find_matching_filename(transcribed_filename: str, reference_map: Dict[str, s
     log_message(f"⚠️ No matching filename found for: {transcribed_filename}", "WARNING")
     return None
 
+def check_ffmpeg() -> bool:
+    """Check if ffmpeg is installed"""
+    try:
+        subprocess.run(["ffmpeg", "-version"], capture_output=True, check=True)
+        return True
+    except (FileNotFoundError, subprocess.CalledProcessError):
+        return False
+
 def transcribe_audio(wav_path: str) -> Optional[Dict[str, Any]]:
     """Transcribe audio file using Whisper."""
     log_message(f"🎤 Transcribing audio file: {wav_path}", "INFO")
     
     try:
+        # Check ffmpeg first
+        if not check_ffmpeg():
+            log_message("❌ ffmpeg not found. Install with: pip install ffmpeg-python or use system package manager", "ERROR")
+            log_message("   Windows (Chocolatey): choco install ffmpeg", "ERROR")
+            log_message("   Windows (Scoop): scoop install ffmpeg", "ERROR")
+            log_message("   Linux (Ubuntu): sudo apt-get install ffmpeg", "ERROR")
+            log_message("   macOS (Homebrew): brew install ffmpeg", "ERROR")
+            return None
+        
         import whisper
         
         # Load model
@@ -661,6 +678,20 @@ async def process_single_file(filename: str):
 @app.on_event("startup")
 async def startup_event():
     """Auto-start processing when server starts"""
+    log_message("🚀 Server startup: Checking dependencies...", "INFO")
+    
+    # Check ffmpeg
+    if not check_ffmpeg():
+        log_message("⚠️ WARNING: ffmpeg is not installed!", "WARNING")
+        log_message("   Whisper requires ffmpeg for audio processing", "WARNING")
+        log_message("   Install with one of the following:", "WARNING")
+        log_message("   - Windows (Chocolatey): choco install ffmpeg", "WARNING")
+        log_message("   - Windows (Scoop): scoop install ffmpeg", "WARNING")
+        log_message("   - Linux (Ubuntu): sudo apt-get install ffmpeg", "WARNING")
+        log_message("   - macOS (Homebrew): brew install ffmpeg", "WARNING")
+    else:
+        log_message("✅ ffmpeg found", "INFO")
+    
     log_message("🚀 Server startup: Auto-starting processing loop", "INFO")
     
     # Start processing in a separate thread