How to download 1688 videos to your own store:

Log in to the Alibaba store backend and find the product video that needs to be uploaded to the Taobao store.

Download the video to your computer.

Log in to the Taobao store backend and click the "Edit" button on the product page where you want to upload the video to enter the product editing page.

Find the "Video" option in the "Product Description" column on the editing page and click the "Upload Video" button.

In the pop-up dialog box, select the Alibaba store product video file that has been downloaded in your computer and click the "OK" button to upload.

After waiting for the upload to complete, save the product editing page.