If you could specify the year, month, day, hour, minute, and second in the save file name, it would have been convenient because you could arrange images created from multiple videos in the order in which they were viewed.

Works like a charm. Easy to use and produce high compression rate files. It would be great if there is also a Chromium version.

Worked great for months, but unfortunately no longer works. Clicking the add-on doesn't enable it anymore. At this moment, it's my only way to take video screenshots on websites that aren't YouTube. Hoping for a fix someday.