Update app.py

app.py

@@ -99,15 +99,14 @@ def convert_video(video_file, quality, aspect_ratio, video_url, api_key, upload)
             ]
 
             try:
-                logging.info("Running command: %s", " ".join(ffmpeg_command))
-                subprocess.run(ffmpeg_command, check=True, timeout=600, stderr=subprocess.PIPE)
+                result = subprocess.run(ffmpeg_command, check=True, timeout=600, capture_output=True, text=True)
             except subprocess.CalledProcessError as e:
-                logging.exception("ffmpeg command failed.")
-                error_file_path = temp_dir / "error.txt"
+                logging.error("ffmpeg command failed with the following error:\n%s", e.stderr)
+                error_file_path = tempfile.gettempdir() + "/error.txt"
                 with open(error_file_path, 'w') as error_file:
-                    error_file.write("ffmpeg command failed:\n")
-                    error_file.write(e.stderr.decode())
+                    error_file.write("ffmpeg command failed with the following error:\n" + e.stderr)
                 return error_file_path
+
             except subprocess.TimeoutExpired:
                 logging.exception("ffmpeg command timed out.")
                 return "ffmpeg command timed out."