Make a movie out of jpg ffmpeg

How to make a movie out of a bunch of jpg or png.

ffmpeg -y  -r 5 -i "image_%04d_today.jpg" output.m4v

-r 5  5 frames per second (normally 25)

Pipe all jpg

cat *.jpg | ffmpeg -f image2pipe -r 1 -vcodec mjpeg -i - -vcodec libx264 out.mp4

How to make a calculation.

1 day = 86400 sec

You would like to make a film of 10 sec in one day.

For 10 secondes you need 10 x 25 frames. So that means 250 jpg's.

86400 / 250 is  345 

So once in the 345 sec a picture has to be taken.