9GAG
Use SaveV on 9GAG posts that include embedded clips or GIF-like videos. Open the post page, not the feed tile, for the best detection.
Step 1
Install SaveV
Make sure the extension is on and ready.
Step 2
Open the 9GAG post
Use the full post detail view with the clip loaded.
Step 3
Download it
Click SaveV Download and let the browser save the file.