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Adds ability to take a screenshot from the current frame of a HTML5 video element and be saved to a file named "video_frame.jpg" or "video_frame.png" (image format is configurable). This script is intended to be used as a bookmarklet using this URL: javascript:hvfs_ujs()
Notice:
This script has been merged into "HTML5 Audio/Video Keyboard Shortcuts With OSD" script.
https://greasyfork.org/en/scripts/390508-html5-audio-video-keyboard-shortcuts-with-osd