--silent-speed > 1 causes ValueError: need at least one array to concatenate

[RickyRister]

Running auto-editor with --silent-speed above 1 causes an error.

For reference, the following commands works fine

• auto-editor -m 0.2s --edit "audio:threshold=0.03" raw.mp4
• auto-editor -m 0.2s --edit "audio:threshold=0.03" --silent-speed 1 raw.mp4

But the following:

• auto-editor -m 0.2s --edit "audio:threshold=0.03" --silent-speed 2 raw.mp4
• auto-editor -m 0.2s --edit "audio:threshold=0.03" --silent-speed 1.1 raw.mp4
• auto-editor -m 0.2s --edit "audio:threshold=0.03" --silent-speed 30 raw.mp4

Gives me the error

Traceback (most recent call last):                                                        
  File "/Users/Ricky/.local/bin/auto-editor", line 8, in <module>
    sys.exit(main())
             ~~~~^^
  File "/Users/Ricky/.local/pipx/venvs/auto-editor/lib/python3.13/site-packages/auto_editor/__main__.py", line 496, in main
    edit_media(paths, args, log)
    ~~~~~~~~~~^^^^^^^^^^^^^^^^^^
  File "/Users/Ricky/.local/pipx/venvs/auto-editor/lib/python3.13/site-packages/auto_editor/edit.py", line 522, in edit_media
    make_media(tl, output)
    ~~~~~~~~~~^^^^^^^^^^^^
  File "/Users/Ricky/.local/pipx/venvs/auto-editor/lib/python3.13/site-packages/auto_editor/edit.py", line 318, in make_media
    audio_streams, audio_gen_frames = make_new_audio(output, fmt, tl, args, log)
                                      ~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/Users/Ricky/.local/pipx/venvs/auto-editor/lib/python3.13/site-packages/auto_editor/render/audio.py", line 347, in make_new_audio
    audio_paths = _make_new_audio(tl, audio_format, args, log)
  File "/Users/Ricky/.local/pipx/venvs/auto-editor/lib/python3.13/site-packages/auto_editor/render/audio.py", line 475, in _make_new_audio
    clip_arr = process_audio_clip(
        clip, getter.get(samp_start, samp_end), sr
    )
  File "/Users/Ricky/.local/pipx/venvs/auto-editor/lib/python3.13/site-packages/auto_editor/render/audio.py", line 220, in process_audio_clip
    return np.concatenate(all_frames, axis=1)
           ~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^
ValueError: need at least one array to concatenate

I am on auto-editor version 28.0.0

This is the video file I was running the command on

raw.mp4

[WyattBlue]

Fixed in 28.0.1