fix(ffmpeg): prevent terminal window flash on Windows during media conversion

tidal_dl_ng/download.py

@@ -1689,6 +1689,9 @@ class Download:
             pathlib.Path: Path to the converted MP4 file.
         """
         path_file_out: pathlib.Path = path_file.with_suffix(AudioExtensions.MP4)
+        
+        self.fn_logger.debug(f"Converting video: {path_file.name} -> {path_file_out.name}")
+        
         ffmpeg = (
             FFmpeg(executable=self.settings.data.path_binary_ffmpeg)
             .option("y")
@@ -1699,6 +1702,8 @@ class Download:
         )
 
         ffmpeg.execute()
+        
+        self.fn_logger.debug(f"Video conversion complete: {path_file_out.name}")
 
         return path_file_out
 
@@ -1712,6 +1717,9 @@ class Download:
             pathlib.Path: Path to the extracted FLAC file.
         """
         path_media_out = path_media_src.with_suffix(AudioExtensions.FLAC)
+        
+        self.fn_logger.debug(f"Extracting FLAC: {path_media_src.name} -> {path_media_out.name}")
+        
         ffmpeg = (
             FFmpeg(executable=self.settings.data.path_binary_ffmpeg)
             .option("hide_banner")
@@ -1728,6 +1736,8 @@ class Download:
         )
 
         ffmpeg.execute()
+        
+        self.fn_logger.debug(f"FLAC extraction complete: {path_media_out.name}")
 
         return path_media_out