SocialDownloader is back from the dead! Lightweight, no extra dependencies and does the job.

Download Photos / videos and stories from the following apps:

WhatsApp : inside the story click on the three dots top left to save.

Facebook : Long press on the story view to save stories.

Enter a video in fullscreen and tap on the three dots bottom right to save.

Twitter: under a video post click the share button.

Instagram : double tap posts on the feed and long press on the stories to save.

Youtube : Long press on video to save.

Tumblr : Long press on video in fullscreen mode to save.

In case you are having crashes in Youtube check this : https://twitter.com/eliassfeir1/status/1245246448343670784?s=21

See the tweak in action : https://youtu.be/sFqH8qKB9YY