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dxli94 / WLASL

WACV 2020 "Word-level Deep Sign Language Recognition from Video: A New Large-scale Dataset and Methods Comparison"
https://dxli94.github.io/WLASL/
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Processed Videos Start and End Frames #16

Closed ayush055 closed 3 years ago

ayush055 commented 3 years ago

I noticed that for the Youtube videos where specific frames were being cut out, the processed video did not match the word. Looking into this issue, I noticed that the start and end frames in the JSON file did not match the same start and end frames in the video for the word (due to a different frame rate). For example, in this link: https://www.youtube.com/watch?v=F5Wef1_PtLk, the word "drink" is supposed to start at frame 5710 if the downloaded Youtube video is 25 fps. However, the downloaded youtube videos are 30 fps and the start and end frames need to be scaled accordingly (so it should start at frame 6852).

dxli94 commented 3 years ago

Yes. This is documented in the README.

If you use the provided preprocessing script, this should not be an issue.