Question : Large images from Youtube

You can get thumbnails from Youtube videos like this:

http://img.youtube.com/vi/J4YjmwCs6H0/2.jpg

I want a larger image, preferably 300px wide.  Does anyone know how to get larger JPEG images from Youtube?

Answer : Large images from Youtube

Use 0.jpg to get a larger image, like this:

http://img.youtube.com/vi/J4YjmwCs6H0/0.jpg