AssertionError: Not enough frames to sample, 0 - 0 < 1

[syc11-25]

csv文件经过了python -m tools.datasets.datautil ${ROOT_META}/meta_clips.csv --info --fmin 1过滤，num_frames最小值也是1，查看了一下代码，感觉按照逻辑是不会出现start_frame_ind和end_frame_ind都为0的情况，除非是len（vframe）==0，请问这是什么原因？是视频出现了破损吗？

[syc11-25]

if vframes_list: vframes = torch.as_tensor(np.stack(vframes_list)) else: vframes = torch.empty((0, 1, 1, 3), dtype=torch.uint8)

是否是因为读视频失败？

[github-actions[bot]]

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