ffmpeg.exe cmd no closing after completion

[ace2]

Anyone had any problems with dos ffmpeg converting to mp4 remaining open even after completing the encoding of jpegs to mp4??
My cmd script completes fine but I end up with multiple ffmpeg.exe & cmd.exe remaining in task manager....
Using taskkill on the ffmpeg closes all and the cmd.exe.

I'm using this command to do my mp4's

FRAME%%04d.JPG -r 24 -threads 7 -s hd480 -b 1300k -vcodec libx264 lapse1.mp4 -y

[ace2]

May have solved the issues I was having.
Updated to later version of ffmpeg from here http://ffmpeg.zeranoe.com
24 hours with no left over orphan processes from any scripts...