Step 1 :
Go to your Twitter Account and choose a video or GIF image that you would like to save from Tweets and Right click on the video and select ( Copy Video URL ).
Tweet video example
Tweet GIF image example
Go to www.thevideosaver.com and Paste the copied URL in the form and hit download button.
Your download links is ready now and you need to choose your perefered video quality to start download in you Device.
Tweet video download links
Tweet GIF image download links