I would like to create a blank video and add images (occupying the entire screen) throughout the video for a very short amount of time (a frame or a second).
I found a command to create the blank video:
ffmpeg -t 7200 -s 640x480 -f rawvideo -pix_fmt rgb24 -r 25 -i /dev/zero empty.mpeg
Now let's say I have an image. I want to insert the image into the video at the 8th second (or some other arbitrary second), and I want it to remain there only briefly.
How can I do this?