Create a color video stream and play it back with ffplay :

ffplay -f lavfi -graph "color=c=pink [out0]" dummy

As the previous example, but use filename for specifying the graph description, and omit the "out0" label:

ffplay -f lavfi color=c=pink

Create three different video test filtered sources and play them:

ffplay -f lavfi -graph "testsrc [out0]; testsrc,hflip [out1]; testsrc,negate [out2]" test3

Read an audio stream from a file using the amovie source and play it back with ffplay:

ffplay -f lavfi "amovie=test.wav"

Read an audio stream and a video stream and play it back with ffplay:

ffplay -f lavfi "movie=test.avi[out0];amovie=test.wav[out1]"

Dump decoded frames to images and closed captions to a file (experimental):

ffmpeg -f lavfi -i "movie=test.ts[out0+subcc]" -map v frame%08d.png -map s -c copy -f rawvideo subcc.bin