please check this:
Hope will help.
How do I fill in the link on Stock Footage Application? Do I have to upload my video to YouTube?
To request access to upload stock footage and motion graphics items, you must submit a portfolio. To submit a portfolio, please fill in this form if you already not submitted.
I think you can host them anywhere you like just linkup them in the form field so that reviewer can check those link to see those samples.
thank you so much
how long does the team review my stock sample?
sorry! to say I have no exact idea. So, you can contact Author Support. As far I know it can take more than 1/2 month(s) based on review queue. Thanks
okay…i’ll try contact authors…thanks
please share your experience about this topic to where you upload your files and how long they take to be reviewed?