Use APKPure App
Get 呟きから動画保存！ Video Downloader old version APK for Android
You can easily download the video from the peep!
~How to use~
1. Open the tweet with the video you want to save
2. Select this app from Share Tweet
3. The URL will be automatically entered, so tap Get
4. The tweet will be retrieved. Select the image quality.
5. Tap the download button and wait for it to be saved
You can also select the image quality to save.
*Please be careful about the rights of the video