20100816050730--IMG_0000.mp4 is not calculated value.
Actually it was 2010/08/16 05:04:30.
But it should be taken between 05:06:52 (P1290913) and 05:24:24 (P1290915).

fx37:     cam_timeorder.awk          -offset -228
ipodnano: cam_timeorder_ipodnano.awk -v offset=-21600