: Sites like Savefrom.net or Kapwing allow you to paste a URL and export the content as an MP4 file.
: Apps like Canvas or Blackboard often have a downward-pointing arrow next to resource titles; tapping this saves the file to a dedicated "offline content" section within the app. Download math class number mp4
If an official download button is unavailable, these tools can extract MP4 files from web links: : Sites like Savefrom