Spice up the README.md with a GIF preview

30fps bayer-dithered 2.3MB GIF

Author: TheAMM

README.md

@@ -1,7 +1,7 @@
 # `mpv_thumbnail_script.lua`
 
-[![](docs/mpv_thumbnail_script.jpg "Thumbnail preview for Sintel (2010) on mpv's seekbar")](https://www.youtube.com/watch?v=a9cmt176WDI)
-[*Click the image or here to see the script in action*](https://www.youtube.com/watch?v=a9cmt176WDI)
+[![](docs/mpv_thumbnail_script.gif "Thumbnail preview for Sintel (2010) on mpv's seekbar")](https://www.youtube.com/watch?v=a9cmt176WDI)
+[*Click the image (or here) to view a YouTube video of the script in action*](https://www.youtube.com/watch?v=a9cmt176WDI)
 
 *(You might also be interested in [`mpv_crop_script.lua`](https://github.com/TheAMM/mpv_crop_script))*