I am running this: ffmpeg -y -f lavfi -i aevalsrc=0 -filter_complex \ color=c=black:r=29.97:s=320x180:sar=0:d=5 -vcodec libx264 -acodec \ libfdk_aac 5.mp4 I would expect this to stop after 5 sec with out having to put a '-t 5' on the command line because I am passing d=5 to the color filter.