question about v_mask

[tuyunbin]

HiREST/modeling.py

Line 505 in 0d4a287

v_mask = torch.zeros((B, self.args.max_frames)).long().to(video_feats.device)

Hi, I wonder why the v_mask is not torch.ones((B, self.args.max_frames)).long().to(video_feats.device)?