Youtube Thumbnail Creator v1.0
http://www.fmxexpress.com/
(Original YouTube component and demo by Baris Atalay.)

The purpose of this app is to take a YouTube URL, download the video file, and use ffmpeg to create a bunch of thumbnails from the video. 
You can then choose on of the thumbnails and the other thumbnails will be deleted. The final thumbnail you choose can be uploaded or used 
however you want. This was an internal project so the code is very rough. Good luck.

The original YouTube component was slightly modified to make it work in this project.

Instructions:
Paste In URL -> Get Info -> Begin Download -> Generate Thumbnails -> Load Thumbnails -> Click The One -> Upload To Wordpress

The files you need in a directory with YouTubeThumbCreator.exe are:
ffmpeg.exe (FFMPEG video processor)
libeay32.dll (OpenSSL lib DLL)
ssleay32.dll (OpenSSL lib DLL)
thumbs.bat (batch file to call FFMPEG)
YouTubeThumbCreator.exe (Firemonkey executable)

The FFMPEG command lines that the batch file uses are:
ffmpeg -loglevel quiet -i video.mp4 -f image2 -vf fps=fps=1/60 thumb%%04d.jpg

If you increase the fps=fps=1/60 commend line to fps=fps=1/600 you will get a lot more thumbnail choices.