Add error handling for ffprobe

src/app.py

@@ -59,7 +59,16 @@ def main(
         "-show_streams",
         filename,
     ]
-    result = subprocess.run(cmd, capture_output=True, check=True)
+    try:
+        result = subprocess.run(cmd, capture_output=True, check=True)
+    except FileNotFoundError:
+        typer.secho("Error: ffprobe not found. Please install FFmpeg.", fg="red", err=True)
+        raise typer.Exit(code=1)
+    except subprocess.CalledProcessError as e:
+        typer.secho("Error: ffprobe failed to probe the file.", fg="red", err=True)
+        error_output = e.stderr.decode() if e.stderr else str(e)
+        typer.secho(error_output, fg="red", err=True)
+        raise typer.Exit(code=1)
     data = parse_streams(json.loads(result.stdout), video_details)
     data.original_media_type = original_media_type
     for stream in data.video_streams: