You can easily convert your VHS tapes to digital video using a Terratec Grabby and these scripts. It may just work with other video grabbing devices other than the Grabby as well.
I'm using ffmpeg dockerized to do the actual saving of the video stream.
Before you plug in your Terratec Grabby, you have to enable this ALSA module:
$ sudo modprobe em28xx-alsaThen it's just plug and play, just run this script and it will capture the video stream for you by using the h265/hvec encoder.
$ ./record my-first-video.mp4
$ # ---> BOOM! The video stream will be captured for you and will be of high quality.MIT