transcode.py: log ffmpeg separately

transcode.py

@@ -18,14 +18,17 @@ from watchdog.events import FileSystemEventHandler
 # Supported video extensions to monitor
 VIDEO_EXTENSIONS = {'.mkv', '.mp4', '.avi', '.mov', '.wmv', '.flv', '.webm', '.m4v', '.ts'}
 
+def get_config_dir():
+    """Returns the main configuration directory path."""
+    xdg_config = os.environ.get('XDG_CONFIG_HOME', os.path.expanduser('~/.config'))
+    return Path(xdg_config) / "transcoder"
+
 def setup_logging():
     """
     Sets up logging to both console (INFO) and file (DEBUG/Verbose).
     Log file is stored in $XDG_CONFIG_HOME/transcoder/transcoder.log
     """
-    # Determine config directory
-    xdg_config = os.environ.get('XDG_CONFIG_HOME', os.path.expanduser('~/.config'))
-    log_dir = Path(xdg_config) / "transcoder"
+    log_dir = get_config_dir()
     log_dir.mkdir(parents=True, exist_ok=True)
     log_file = log_dir / "transcoder.log"
 
@@ -103,22 +106,32 @@ def transcode_file(input_file, output_file):
         logging.warning(f"File vanished during checks: {input_path.name}")
         return
 
+    # Prepare individual FFmpeg log file
+    ffmpeg_logs_dir = get_config_dir() / "ffmpeg_logs"
+    ffmpeg_logs_dir.mkdir(parents=True, exist_ok=True)
+    
+    # We append .log to the full filename to avoid collisions (e.g. video.mp4.log)
+    ffmpeg_log_file = ffmpeg_logs_dir / f"{input_path.name}.log"
+
     logging.info(f"START: Transcoding {input_path.name}")
+    logging.info(f"       FFmpeg details logging to: {ffmpeg_log_file}")
     
     cmd = get_ffmpeg_command(input_path, output_path)
     logging.debug(f"Executing FFmpeg command: {' '.join(cmd)}")
     
     try:
-        # Run FFmpeg
-        # We capture output to prevent FFmpeg spamming the console, but log it on error
-        result = subprocess.run(cmd, capture_output=True, text=True)
+        with open(ffmpeg_log_file, "w", encoding="utf-8", errors="replace") as f_log:
+            # Write the command itself to the top of the log
+            f_log.write(f"COMMAND: {' '.join(cmd)}\n\n")
+            f_log.flush()
+
+            # Run FFmpeg, redirecting both stdout and stderr to the individual log file
+            result = subprocess.run(cmd, stdout=f_log, stderr=subprocess.STDOUT, text=True)
         
         if result.returncode == 0:
             logging.info(f"DONE: Successfully created {output_path.name}")
-            logging.debug(f"FFmpeg stdout: {result.stdout}")
         else:
-            logging.error(f"FFmpeg failed for {input_path.name}")
-            logging.error(f"FFmpeg stderr: {result.stderr}")
+            logging.error(f"FFmpeg failed for {input_path.name}. See log at {ffmpeg_log_file}")
 
     except Exception as e:
         logging.exception(f"Unexpected error during transcoding of {input_path.name}")