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IndexError: pop from an empty deque

See original GitHub issue

/usr/local/lib/python3.6/dist-packages/vidstab/general_utils.py:57: UserWarning: No progress bar will be shown. (Unable to grab frame count & no max_frames provided.)
  warnings.warn('No progress bar will be shown. (Unable to grab frame count & no max_frames provided.)')
Traceback (most recent call last):
  File "/usr/lib/python3.6/runpy.py", line 193, in _run_module_as_main
    "__main__", mod_spec)
  File "/usr/lib/python3.6/runpy.py", line 85, in _run_code
    exec(code, run_globals)
  File "/usr/local/lib/python3.6/dist-packages/vidstab/__main__.py", line 64, in <module>
    cli_stabilizer(args)
  File "/usr/local/lib/python3.6/dist-packages/vidstab/main_utils.py", line 119, in cli_stabilizer
    playback=args['playback'])
  File "/usr/local/lib/python3.6/dist-packages/vidstab/VidStab.py", line 485, in stabilize
    bar = self._init_trajectory(smoothing_window, max_frames, show_progress=show_progress)
  File "/usr/local/lib/python3.6/dist-packages/vidstab/VidStab.py", line 157, in _init_trajectory
    self._process_first_frame()
  File "/usr/local/lib/python3.6/dist-packages/vidstab/VidStab.py", line 137, in _process_first_frame
    _, _ = self.frame_queue.read_frame(array=array)
  File "/usr/local/lib/python3.6/dist-packages/vidstab/frame_queue.py", line 43, in read_frame
    return self._append_frame(frame, pop_ind)
  File "/usr/local/lib/python3.6/dist-packages/vidstab/frame_queue.py", line 51, in _append_frame
    self.i = self.inds.popleft()
IndexError: pop from an empty deque

Works for some videos but for some videos it gives this error

Issue Analytics

State:
Created 4 years ago
Comments:6 (4 by maintainers)

Top GitHub Comments

1reaction

bipindr123commented, May 4, 2019

Hey I tried it again and it was a stupid error on my part of not being in the correct directory. (although it somehow worked one video) my bad, very sorry for wasting your time thank you for your time

0reactions

AdamSpannbauercommented, May 4, 2019

This should be a more descriptive error message though. I’ve opened up #71 to avoid this confusing error message in the future.

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