The original image (green_beans.jpg) is in 259 x 194. So it will look blurry if it has been up scaled (the image in the video is larger then the original size). This is normal.
But there is another problem in your screenshot show the image is broken at the right and bottom. I think that's what you actually talking about? We've tried but can't reproduce this problem. Please try upgrade your graphics card driver see if the problem goes away.