text: E.4 Masking Strategy 
  
  An important component of the V-JEPA pretraining strategy is the 3D clip masking strategy. In this section, we 
  detail 26 ablation experiments exploring different masks. For all the experiments, we pretrain a ViT-B/16 pretrained 
  on K400. Figure 8 presents a summary of those results. 
  
  Figure 8c shows the effect of changing the spatial and temporal masking ratio. Figure 8b ablates the number of 
  sampled blocks used to construct the masks given a fixed effective masking ratio of 90%. Finally, in Figure 8a we 
  
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