Simplify no-tkinter file dialog fallback

pvd_mezzanine.py

@@ -726,28 +726,24 @@ def run_no_tk_fallback() -> int:
         print("Tkinter ist nicht verfuegbar. Starte Drag-and-Drop-Datei direkt im CLI-Modus.")
         return run_cli(sys.argv[1], OUTPUT_BASE_DIR)
 
-    print("Tkinter ist nicht verfuegbar. Oeffne Windows-Dateidialoge als Fallback.")
-    selected = choose_paths_with_powershell()
-    if selected is None:
+    print("Tkinter ist nicht verfuegbar. Oeffne Windows-Dateidialog als Fallback.")
+    input_file = choose_input_with_powershell()
+    if input_file is None:
         print("Keine Quelle ausgewaehlt.")
         return 1
-    input_file, output_dir = selected
-    return run_cli(input_file, output_dir)
+    print(f"Quelle: {input_file}")
+    print(f"Ausgabe: {OUTPUT_BASE_DIR}")
+    return run_cli(input_file, OUTPUT_BASE_DIR)
 
 
-def choose_paths_with_powershell() -> tuple[str, str] | None:
+def choose_input_with_powershell() -> str | None:
     script = r"""
 Add-Type -AssemblyName System.Windows.Forms
 $open = New-Object System.Windows.Forms.OpenFileDialog
 $open.Title = 'Basis-Video auswaehlen'
 $open.Filter = 'Video-Dateien (*.mov;*.mxf;*.mp4;*.mkv;*.ts;*.m2ts;*.vob)|*.mov;*.mxf;*.mp4;*.mkv;*.ts;*.m2ts;*.vob|Alle Dateien (*.*)|*.*'
 if ($open.ShowDialog() -ne [System.Windows.Forms.DialogResult]::OK) { exit 2 }
-$folder = New-Object System.Windows.Forms.FolderBrowserDialog
-$folder.Description = 'Ausgabeordner auswaehlen'
-$folder.SelectedPath = 'H:\VOD'
-if ($folder.ShowDialog() -ne [System.Windows.Forms.DialogResult]::OK) { exit 2 }
 Write-Output $open.FileName
-Write-Output $folder.SelectedPath
 """
     result = subprocess.run(
         ["powershell", "-NoProfile", "-STA", "-Command", script],
@@ -758,9 +754,9 @@ Write-Output $folder.SelectedPath
     if result.returncode != 0:
         return None
     lines = [line.strip() for line in result.stdout.splitlines() if line.strip()]
-    if len(lines) < 2:
+    if not lines:
         return None
-    return lines[0], lines[1]
+    return lines[0]
 
 
 def main() -> int: