This is the DIY approach...
With a video playing in Tumblr, right click on it, and click on the option to
View Frame Source
- this opens a new html tab in your browser, where you should use CTRL + F to find
mp4
- the highlighted URL before this is the video location; you can either click on this to open it in a new tab, or, right-click on it, and use the
Save As option to download it.
In this example, you will notice that the video URL ends with
/480, which means that there is also a higher-definition version of the video available - to download this version, the URL should be copied, and the /480 stripped off the end, and then loaded in a browser tab, where it can be downloaded directly, by right-clicking, e.g. the higher-definition video for this example is at the URL below
Code:
https://xxxnewstitch.tumblr.com/video_file/t:531GhtAp5X1t2ixVOu1Wug/178772437691/tumblr_p3qxbbkbJV1vnq1cr