I think this is an important thing ppl should know. If you have a slow computer and/or maybe not the best cards Videosubfinder will be slow or not work.When you reduce the search area, the full frame is still displayed in the left subwindow, just in case you limit the box too much you can visually notice if there are subtitles present outside of the box. In that case you may abort the search and resize the search box.
When you click run search, the vid DOES NOT play. I can't be sure... I think I read somewhere it updates a frame every minute but I could be wrong. Depending on your CPU/GPU it may take hours to search thru a 2 hours vid. I once try it on a very old Celeron mini PC it's SLOW. On my 3 yrs old high end PC it takes less than a hour to search a vid. Once you click start, go get a coffee and don't look at it again for at least 5 mins. Then you should see both the vid frame updated and the last searched subtitle frame on the right sub-window.
If you want to be sure there's progress, use File Explorer to look into the RGBImages folder, there are an increasing number of JPG images. You can even begin to browse the images and delete the mis-detected frames. You can also take a look at Task Manager to confirm VidSubFinder is being busy and eating CPU cycles.
My computer is older. I tried Videosubfinder and the results was blurry but sometimes no files was created.
I began using Pytranscribers to help mostly for timing and then I go scene by scene subbing. Old school method before the dinosaurs haha
You may call me senor tortoise