I'm adding pictures to the video to form an animation. And the animation needs to start with a delay.

ffmpeg -i a.mp4 -t 7 -r 25 -itsoffset 3 -stream_loop 1 -i %d.png  -filter_complex "[0:v][1:v]overlay=0.0:-0.01:enable=between(t\,4\,3)[0]" -map "[0]" -y out.mp4

but it not work How do i implement this function?

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