sequential numbering
sequential numbering

Edited to allow greater interval than one second between thumbnails but use an sequential numbering instead of seconds from start..
nnarhinen/flowplayer-thumbnails,flowplayer/flowplayer-thumbnails,rlugojr/flowplayer-thumbnails,blacktrash/flowplayer-thumbnails,flowplayer/flowplayer-thumbnails,nnarhinen/flowplayer-thumbnails,blacktrash/flowplayer-thumbnails,rlugojr/flowplayer-thumbnails