Understood. Thank you for your comment.
Hi, thanks for your response! To my understanding, I think Ffmpeg can do that by the comand below: $ ffmpeg -i VIDEOFILE -vf fps=fps=1/60,scale=320:240,tile=4x8 OneCanvas.jpg
Would you please let me know what are the essential contribuions ezThumb did? It looks ffmpeg + GUI for me. What are advantage to use exthumb? Thank you.