On DMM website, they usually write description (or plot, summary, etc). Do you get this information from other websites?
For example, SONE-622 has this description
This is my own program with my own way of use, I will try to write an user guide. In the mean time I can generate HTML file for you. Please note that HTML may not contains all video information because either I can't find the movie code in SRT name or I can't get the information for some codes,
I have a program that scan the folder, find possible movie information on internet and export to an HTML file with title and image. I will try with your folder in a few days. Currently I'm busy with some improvement.
It might look like this (attached file)