is it possible to load only a crop of the video?

dmlc / decord

An efficient video loader for deep learning with smart shuffling that's super easy to digest

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Open orena1 opened 1 month ago

orena1 commented 1 month ago

If I have a 1200x1200 video, can I load only crop (central 100x100) or maybe every second pixel (spatial subsampling)? Thanks

johndpope commented 1 month ago

are you doing machine learning stuff? is your concern on the memory usage? i have been solving similiar problem in pytorch land rendering out frames to a new dataframe npz file https://github.com/johndpope/MegaPortrait-hack/blob/main/EmoDataset.py#L59