# imagemagick - crop and convert to ppm
$ for foo in `ls *.png`; do mogrify -format ppm -crop 720x406+0+85 $foo; done;
# ppmtoym
$ cat *.ppm | ppmtoy4m -F 25:1 -A 1:1 | mpeg2enc  -f 8 -q 1 -o output-16-9.m2v
whale:output rossetti$ cat *.ppm | /Library/MPipes/MPEGEncoder.mpipe/Contents/Resources/ppmtoy4m -F 25:1 -A 1:1 | ../mpeg2enc.intel  -f 8 -q 1 -o output.m2vwhale:output rossetti$ for foo in `ls *.png`; do mogrify -format ppm -crop 720x406+0+85 $foo; done;whale:output rossetti$ cat *.ppm | /Library/MPipes/MPEGEncoder.mpipe/Contents/Resources/ppmtoy4m -F 25:1 -A 1:1 | ../mpeg2enc.intel  -f 8 -q 1 -o output-16-9.m2v