There are a couple of reasons that you may be having difficulty downloading videos from the Internet, and these are the reasons:
a. Your Internet connection may not be stable.
b. The videos may have special protection, or are broadcasts.
c. You may be trying to download from an unsupported website.
Please follow this link for a list of our supported sites: https://www.aiseesoft.com/video-downloader/reference.html.
However, there are still lots of websites not listed here. If your website cannot be downloaded, you can send us the download URL for checking. If it shows our software cannot support, we will add it in future update.
