$ mkdir pics; lavtrans +n -o pics/t%05d.jpg -f i mvi_1434.avi (no Huffman Tables, unreadable) $ lav2yuv +n mvi_1434.avi | y4mtoppm | pnmsplit - pics/image%d.pnm $ pnmtojpeg pics/image63.pnm > image63.jpg or $ cjpeg -qual 95 -opt foo.ppm > foo.jpg (jpeg utils themselves) or $ cd pics/; for i in *.pnm; do convert $i `basename $i pnm`jpg; done