RGB565 To PNG/JPEG

\>ffmpeg -vcodec rawvideo -f rawvideo -pix_fmt rgb565 -s 1024x768 -i image.raw -f image2 -vcodec png image.png

# check support witch pix_fmt

\>ffmpeg -pix_fmt list

http://www.swview.org/blog/rgb565-pngjpeg